This document presents an approach called Request-centric I/O Prioritization (RCP) that holistically prioritizes I/Os along the entire I/O path to improve application performance. Existing I/O schedulers operate independently across different layers, which can cause I/O priority inversion and arbitrarily delay foreground tasks. RCP identifies critical I/Os using an enlightenment API and inherits I/O priorities through task and I/O dependencies to enforce critical I/O prioritization in caching, block allocation and queueing layers. Evaluation with PostgreSQL, MongoDB and Redis shows RCP improves throughput by 12-49% and reduces tail latencies by 5-20x compared to other schedulers.
Introducing NoSQL and MongoDB to complement Relational Databases (AMIS SIG 14...Lucas Jellema
This presentation gives an brief overview of the history of relational databases, ACID and SQL and presents some of the key strentgths and potential weaknesses. It introduces the rise of NoSQL - why it arose, what is entails, when to use it. The presentation focuses on MongoDB as prime example of NoSQL document store and it shows how to interact with MongoDB from JavaScript (NodeJS) and Java.
Tracxn Research - Insurance Tech Landscape, February 2017Tracxn
This document provides an overview of investment trends in the insurance technology sector from 2010 to 2016. It finds that the number of companies founded, funding rounds completed, and total funding amount have all increased significantly year-over-year in this period. The largest investments in the last year went to Oscar, Clover Health, Metromile, and Gusto. The report also analyzes trends by funding stage and subsectors within insurtech.
This document discusses Kubernetes usage at VMware SAAS. It covers dynamic provisioning of applications on Kubernetes, monitoring tools used like DataDog and Log Insight, and best practices for upgrading Kubernetes clusters. Key points include using stateless applications where possible, service discovery using Kubernetes services, dynamic provisioning using an onboarding service, and performing rolling upgrades for stateful applications to minimize downtime.
MongoDB NoSQL database a deep dive -MyWhitePaperRajesh Kumar
This document provides an overview of MongoDB, a popular NoSQL database. It discusses why NoSQL databases were created, the different types of NoSQL databases, and focuses on MongoDB. MongoDB is a document-oriented database that stores data in JSON-like documents with dynamic schemas. It provides horizontal scaling, high performance, and flexible data models. The presentation covers MongoDB concepts like databases, collections, documents, CRUD operations, indexing, sharding, replication, and use cases. It provides examples of modeling data in MongoDB and considerations for data and schema design.
The document summarizes key trends from the 2015 Internet Trends report by Mary Meeker. It outlines that while global internet and smartphone user growth is still solid, the growth rate is slowing as adoption increases. It also notes that incremental users will be harder to obtain as adoption depends more on developing markets. Internet usage and engagement growth remains strong, especially for mobile video. Mobile advertising is growing faster than desktop but still lags in share of total internet advertising spending. The document also highlights new advertising formats and payment options optimized for mobile usage as well as the rise of vertical video viewing. Finally, it discusses how enterprise technology startups are reimagining business processes by addressing prior pain points in areas like communications, payments, analytics and
Introducing NoSQL and MongoDB to complement Relational Databases (AMIS SIG 14...Lucas Jellema
This presentation gives an brief overview of the history of relational databases, ACID and SQL and presents some of the key strentgths and potential weaknesses. It introduces the rise of NoSQL - why it arose, what is entails, when to use it. The presentation focuses on MongoDB as prime example of NoSQL document store and it shows how to interact with MongoDB from JavaScript (NodeJS) and Java.
Tracxn Research - Insurance Tech Landscape, February 2017Tracxn
This document provides an overview of investment trends in the insurance technology sector from 2010 to 2016. It finds that the number of companies founded, funding rounds completed, and total funding amount have all increased significantly year-over-year in this period. The largest investments in the last year went to Oscar, Clover Health, Metromile, and Gusto. The report also analyzes trends by funding stage and subsectors within insurtech.
This document discusses Kubernetes usage at VMware SAAS. It covers dynamic provisioning of applications on Kubernetes, monitoring tools used like DataDog and Log Insight, and best practices for upgrading Kubernetes clusters. Key points include using stateless applications where possible, service discovery using Kubernetes services, dynamic provisioning using an onboarding service, and performing rolling upgrades for stateful applications to minimize downtime.
MongoDB NoSQL database a deep dive -MyWhitePaperRajesh Kumar
This document provides an overview of MongoDB, a popular NoSQL database. It discusses why NoSQL databases were created, the different types of NoSQL databases, and focuses on MongoDB. MongoDB is a document-oriented database that stores data in JSON-like documents with dynamic schemas. It provides horizontal scaling, high performance, and flexible data models. The presentation covers MongoDB concepts like databases, collections, documents, CRUD operations, indexing, sharding, replication, and use cases. It provides examples of modeling data in MongoDB and considerations for data and schema design.
The document summarizes key trends from the 2015 Internet Trends report by Mary Meeker. It outlines that while global internet and smartphone user growth is still solid, the growth rate is slowing as adoption increases. It also notes that incremental users will be harder to obtain as adoption depends more on developing markets. Internet usage and engagement growth remains strong, especially for mobile video. Mobile advertising is growing faster than desktop but still lags in share of total internet advertising spending. The document also highlights new advertising formats and payment options optimized for mobile usage as well as the rise of vertical video viewing. Finally, it discusses how enterprise technology startups are reimagining business processes by addressing prior pain points in areas like communications, payments, analytics and
Best Practices for Integrating Active Directory with AWS WorkloadsAmazon Web Services
Active Directory (AD) is essential for Windows workloads in the cloud. AWS offers customers multiple ways to integrate AD with cloud workloads like EC2, RDS, and AWS Enterprise Applications: AWS Directory Service for Microsoft Active Directory (Enterprise Edition) as a managed service and Active Directory running on AWS EC2 Windows instances. Which option is right for you? This session will discuss the key deployment considerations for each option to help you identify which best meets your project goals, and the effort involved. The session will cover options for integrating with your on-premises directory, port and security considerations, application considerations, and best practices.
Gs08 modernize your data platform with sql technologies wash dcBob Ward
The document discusses the challenges of modern data platforms including disparate systems, multiple tools, high costs, and siloed insights. It introduces the Microsoft Data Platform as a way to manage all data in a scalable and secure way, gain insights across data without movement, utilize existing skills and investments, and provide consistent experiences on-premises, in the cloud, and hybrid environments. Key elements of the Microsoft Data Platform include SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Azure Data Lake, and Analytics Platform System.
David Yan offers an overview of Apache Apex, a stream processing engine used in production by several large companies for real-time data analytics.
Apache Apex uses a programming paradigm based on a directed acyclic graph (DAG). Each node in the DAG represents an operator, which can be data input, data output, or data transformation. Each directed edge in the DAG represents a stream, which is the flow of data from one operator to another.
As part of Apex, the Malhar library provides a suite of connector operators so that Apex applications can read from or write to various data sources. It also includes utility operators that are commonly used in streaming applications, such as parsers, deduplicators and join, and generic building blocks that facilitate scalable state management and checkpointing.
In addition to processing based on ingression time and processing time, Apex supports event-time windows and session windows. It also supports windowing, watermarks, allowed lateness, accumulation mode, triggering, and retraction detailed by Apache Beam as well as feedback loops in the DAG for iterative processing and at-least-once and “end-to-end” exactly-once processing guarantees. Apex provides various ways to fine-tune applications, such as operator partitioning, locality, and affinity.
Apex is integrated with several open source projects, including Apache Beam, Apache Samoa (distributed machine learning), and Apache Calcite (SQL-based application specification). Users can choose Apex as the backend engine when running their application model based on these projects.
David explains how to develop fault-tolerant streaming applications with low latency and high throughput using Apex, presenting the programming model with examples and demonstrating how custom business logic can be integrated using both the declarative high-level API and the compositional DAG-level API.
2017 iosco research report on financial technologies (fintech)Ian Beckett
This document provides an overview of financial technologies (Fintech) and their intersection with securities markets regulation. It examines alternative financing platforms, retail trading/investment platforms, institutional trading platforms, and distributed ledger technologies. The report finds that Fintech is transforming traditional financial services through new business models and technologies. This raises regulatory questions around benefits/risks and implications for investor protection, market integrity, and stability. The document incorporates survey responses from global regulators on their experiences with Fintech.
Your App Deserves More – The Art of App ModernizationKlaus Bild
Make your data sustainable and enhance the value of your applications. Your application and your work deserve it! We use applications everywhere but unfortunately a lot of them are old and monolithic. They are heavily used by your business but adding new functions to catch up with the business needs is almost impossible. We, a developer and an admin, will show you how you can transform your monolithic applications into modern apps using a smart architecture. Learn how you can leverage IBM Bluemix, Docker and suchlike to bring cognitive services to your applications. We will show you a live example to illustrate how we extended IBM Verse using IBM cloud technology to fulfill an urgent business need.
The document discusses the structure and components of HTML documents. It begins by explaining what HTML is and how it uses tags to provide formatting and semantic meaning. It then discusses the key elements of HTML documents, including the <html>, <head>, and <body> tags which form the basic skeleton of all HTML pages. The document also explains the differences between different types of tags and how HTML documents are interpreted by browsers.
Webinar - Bringing Game Changing Insights with Graph DatabasesDataStax
For many important problems, such as fraud detection, search, personalization, recommendation, and user authorization, data generated by graph databases are often easier and more efficient than other alternatives. Join our partner, Expero, to learn how applying user-centered strategies and leveraging the latest UI tools to your graph database can bring game-changing insights, finding critical concepts, clusters and relationships out of once-disconnected data.
View recording: https://youtu.be/sP2YpwmyHbg
Explore all current and on-demand DataStax webinars: http://www.datastax.com/resources/webinars
Amazon Redshift is a fast, fully managed data warehousing service that allows customers to analyze petabytes of structured data, at one-tenth the cost of traditional data warehousing solutions. It provides massively parallel processing across multiple nodes, columnar data storage for efficient queries, and automatic backups and recovery. Customers have seen up to 100x performance improvements over legacy systems when using Redshift for applications like log and clickstream analytics, business intelligence reporting, and real-time analytics.
Dokumen tersebut membahas tentang database, termasuk pengertian database, jenis database, dan perbedaan antara database relasional dan non-relasional (NoSQL). Database dijelaskan sebagai kumpulan informasi yang disimpan secara sistematis untuk memperoleh informasi, sedangkan database relasional menyimpan data dalam bentuk tabel yang saling berhubungan dan NoSQL menyederhanakan proses database dengan menghilangkan redudansi data.
It’s been an exciting year for Amazon Aurora, the MySQL-compatible relational database engine that combines the speed and availability of high-end commercial databases with the simplicity and cost-effectiveness of open source databases. In this deep dive session, we’ll discuss best practices and explore new features, include high availability options and new integrations with AWS services. We’ll also discuss the recently-announced Aurora with PostgreSQL compatibility.
Kernel Recipes 2015: Solving the Linux storage scalability bottlenecksAnne Nicolas
lash devices introduced a sudden shift in the performance profile of direct attached storage. With IOPS rates orders of magnitude higher than rotating storage, it became clear that Linux needed a re-design of its storage stack to properly support and get the most out of these new devices.
This talk will detail the architecture of blk-mq, the redesign of the core of the Linux storage stack, and the later set of changes made to adapt the SCSI stack to this new queuing model. Early results of running Facebook infrastructure production workloads on top of the new stack will also be shared.
Jense Axboe, Facebook
How to monitor Java application and JVM performance with Flight Recorder and Mission Control. Starts with a discussion of general JVM performance considerations like GC, JIT and threads.
The document discusses using coverage to accelerate functional verification on emulators. It describes defining a test plan, running tests with coverage enabled, and analyzing coverage reports to focus on uncovered areas. Code coverage is demonstrated on an emulator with minimal performance impact. Functional coverage is also supported to further drive verification closure.
All the fundamental concepts and tools for understanding performance tuning in Java. Garbage collection, memory management and collector types and tools for profiling Java applications.
Srihitha Technologies provides Datastage Online Training in Ameerpet by real time Experts. For more information about Datastage online training in Ameerpet call 9885144200 / 9394799566.
The Linux Block Layer - Built for Fast StorageKernel TLV
The arrival of flash storage introduced a radical change in performance profiles of direct attached devices. At the time, it was obvious that Linux I/O stack needed to be redesigned in order to support devices capable of millions of IOPs, and with extremely low latency.
In this talk we revisit the changes the Linux block layer in the
last decade or so, that made it what it is today - a performant, scalable, robust and NUMA-aware subsystem. In addition, we cover the new NVMe over Fabrics support in Linux.
Sagi Grimberg
Sagi is Principal Architect and co-founder at LightBits Labs.
Flink Forward SF 2017: Stephan Ewen - Experiences running Flink at Very Large...Flink Forward
This talk shares experiences from deploying and tuning Flink steam processing applications for very large scale. We share lessons learned from users, contributors, and our own experiments about running demanding streaming jobs at scale. The talk will explain what aspects currently render a job as particularly demanding, show how to configure and tune a large scale Flink job, and outline what the Flink community is working on to make the out-of-the-box for experience as smooth as possible. We will, for example, dive into - analyzing and tuning checkpointing - selecting and configuring state backends - understanding common bottlenecks - understanding and configuring network parameters
This talk is from Distributed Data Summit SF 2018 - http://distributeddatasummit.com/2018-sf/sessions#chella
Audit logging is one of the most critical features in an enterprise-ready database in terms of security compliance. Furthermore, live traffic troubleshooting is critical for operators to troubleshoot production issues quickly. While past versions have lacked these critical features, the Cassandra team understood the need for better solutions and in the upcoming release of Cassandra both of these features now come out of the box which makes Cassandra even more awesome to work with. Cassandra now supports Audit logging and query logging as part of C* itself. As part of this talk, audience will learn about how to enable, configure, and tune audit logging for their C* clusters and how to log live traffic/queries for serverel needs including troubleshooting or even live traffic reply
Getting started with RISC-V verification what's next after compliance testingRISC-V International
The document discusses the CPU design verification (DV) process for RISC-V processors and the challenges presented by RISC-V's open standard nature. It covers developing a verification plan, obtaining tests and models, running simulations, and verifying until coverage metrics are met. Key aspects include using a reference model for configuration and comparison, techniques like self-check, signature comparison, trace logging and step-and-compare, and test suites like riscv-compliance. The presenter demonstrates step-and-compare verification between an Imperas reference model and RISC-V RTL using open source tools and models.
This document provides a crash course on runtime hacking of iOS applications. It discusses setting up the necessary environment, mapping out an application by decrypting and dumping binaries to obtain class information. It then demonstrates how to retrieve sensitive variables like credentials by directly accessing them at runtime using Cycript. Finally, it shows how functions can be manipulated to bypass security checks or modify application behavior persistently through injection.
Where is my bottleneck? Performance troubleshooting in FlinkFlink Forward
Flinkn Forward San Francisco 2022.
In this talk, we will cover various topics around performance issues that can arise when running a Flink job and how to troubleshoot them. We’ll start with the basics, like understanding what the job is doing and what backpressure is. Next, we will see how to identify bottlenecks and which tools or metrics can be helpful in the process. Finally, we will also discuss potential performance issues during the checkpointing or recovery process, as well as and some tips and Flink features that can speed up checkpointing and recovery times.
by
Piotr Nowojski
This document discusses instruction pipelining in computer processors. It begins by defining pipelining and explaining how it works like an assembly line to increase throughput. It then discusses different types of pipelines and introduces the MIPS instruction pipeline as an example. The document goes on to explain different types of pipeline hazards like structural hazards, control hazards, and data hazards. It provides examples of how to detect and resolve these hazards through techniques like forwarding, stalling, predicting, and delayed branching. Key concepts covered include pipeline registers, control signals, forwarding units, and branch prediction buffers.
Best Practices for Integrating Active Directory with AWS WorkloadsAmazon Web Services
Active Directory (AD) is essential for Windows workloads in the cloud. AWS offers customers multiple ways to integrate AD with cloud workloads like EC2, RDS, and AWS Enterprise Applications: AWS Directory Service for Microsoft Active Directory (Enterprise Edition) as a managed service and Active Directory running on AWS EC2 Windows instances. Which option is right for you? This session will discuss the key deployment considerations for each option to help you identify which best meets your project goals, and the effort involved. The session will cover options for integrating with your on-premises directory, port and security considerations, application considerations, and best practices.
Gs08 modernize your data platform with sql technologies wash dcBob Ward
The document discusses the challenges of modern data platforms including disparate systems, multiple tools, high costs, and siloed insights. It introduces the Microsoft Data Platform as a way to manage all data in a scalable and secure way, gain insights across data without movement, utilize existing skills and investments, and provide consistent experiences on-premises, in the cloud, and hybrid environments. Key elements of the Microsoft Data Platform include SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Azure Data Lake, and Analytics Platform System.
David Yan offers an overview of Apache Apex, a stream processing engine used in production by several large companies for real-time data analytics.
Apache Apex uses a programming paradigm based on a directed acyclic graph (DAG). Each node in the DAG represents an operator, which can be data input, data output, or data transformation. Each directed edge in the DAG represents a stream, which is the flow of data from one operator to another.
As part of Apex, the Malhar library provides a suite of connector operators so that Apex applications can read from or write to various data sources. It also includes utility operators that are commonly used in streaming applications, such as parsers, deduplicators and join, and generic building blocks that facilitate scalable state management and checkpointing.
In addition to processing based on ingression time and processing time, Apex supports event-time windows and session windows. It also supports windowing, watermarks, allowed lateness, accumulation mode, triggering, and retraction detailed by Apache Beam as well as feedback loops in the DAG for iterative processing and at-least-once and “end-to-end” exactly-once processing guarantees. Apex provides various ways to fine-tune applications, such as operator partitioning, locality, and affinity.
Apex is integrated with several open source projects, including Apache Beam, Apache Samoa (distributed machine learning), and Apache Calcite (SQL-based application specification). Users can choose Apex as the backend engine when running their application model based on these projects.
David explains how to develop fault-tolerant streaming applications with low latency and high throughput using Apex, presenting the programming model with examples and demonstrating how custom business logic can be integrated using both the declarative high-level API and the compositional DAG-level API.
2017 iosco research report on financial technologies (fintech)Ian Beckett
This document provides an overview of financial technologies (Fintech) and their intersection with securities markets regulation. It examines alternative financing platforms, retail trading/investment platforms, institutional trading platforms, and distributed ledger technologies. The report finds that Fintech is transforming traditional financial services through new business models and technologies. This raises regulatory questions around benefits/risks and implications for investor protection, market integrity, and stability. The document incorporates survey responses from global regulators on their experiences with Fintech.
Your App Deserves More – The Art of App ModernizationKlaus Bild
Make your data sustainable and enhance the value of your applications. Your application and your work deserve it! We use applications everywhere but unfortunately a lot of them are old and monolithic. They are heavily used by your business but adding new functions to catch up with the business needs is almost impossible. We, a developer and an admin, will show you how you can transform your monolithic applications into modern apps using a smart architecture. Learn how you can leverage IBM Bluemix, Docker and suchlike to bring cognitive services to your applications. We will show you a live example to illustrate how we extended IBM Verse using IBM cloud technology to fulfill an urgent business need.
The document discusses the structure and components of HTML documents. It begins by explaining what HTML is and how it uses tags to provide formatting and semantic meaning. It then discusses the key elements of HTML documents, including the <html>, <head>, and <body> tags which form the basic skeleton of all HTML pages. The document also explains the differences between different types of tags and how HTML documents are interpreted by browsers.
Webinar - Bringing Game Changing Insights with Graph DatabasesDataStax
For many important problems, such as fraud detection, search, personalization, recommendation, and user authorization, data generated by graph databases are often easier and more efficient than other alternatives. Join our partner, Expero, to learn how applying user-centered strategies and leveraging the latest UI tools to your graph database can bring game-changing insights, finding critical concepts, clusters and relationships out of once-disconnected data.
View recording: https://youtu.be/sP2YpwmyHbg
Explore all current and on-demand DataStax webinars: http://www.datastax.com/resources/webinars
Amazon Redshift is a fast, fully managed data warehousing service that allows customers to analyze petabytes of structured data, at one-tenth the cost of traditional data warehousing solutions. It provides massively parallel processing across multiple nodes, columnar data storage for efficient queries, and automatic backups and recovery. Customers have seen up to 100x performance improvements over legacy systems when using Redshift for applications like log and clickstream analytics, business intelligence reporting, and real-time analytics.
Dokumen tersebut membahas tentang database, termasuk pengertian database, jenis database, dan perbedaan antara database relasional dan non-relasional (NoSQL). Database dijelaskan sebagai kumpulan informasi yang disimpan secara sistematis untuk memperoleh informasi, sedangkan database relasional menyimpan data dalam bentuk tabel yang saling berhubungan dan NoSQL menyederhanakan proses database dengan menghilangkan redudansi data.
It’s been an exciting year for Amazon Aurora, the MySQL-compatible relational database engine that combines the speed and availability of high-end commercial databases with the simplicity and cost-effectiveness of open source databases. In this deep dive session, we’ll discuss best practices and explore new features, include high availability options and new integrations with AWS services. We’ll also discuss the recently-announced Aurora with PostgreSQL compatibility.
Kernel Recipes 2015: Solving the Linux storage scalability bottlenecksAnne Nicolas
lash devices introduced a sudden shift in the performance profile of direct attached storage. With IOPS rates orders of magnitude higher than rotating storage, it became clear that Linux needed a re-design of its storage stack to properly support and get the most out of these new devices.
This talk will detail the architecture of blk-mq, the redesign of the core of the Linux storage stack, and the later set of changes made to adapt the SCSI stack to this new queuing model. Early results of running Facebook infrastructure production workloads on top of the new stack will also be shared.
Jense Axboe, Facebook
How to monitor Java application and JVM performance with Flight Recorder and Mission Control. Starts with a discussion of general JVM performance considerations like GC, JIT and threads.
The document discusses using coverage to accelerate functional verification on emulators. It describes defining a test plan, running tests with coverage enabled, and analyzing coverage reports to focus on uncovered areas. Code coverage is demonstrated on an emulator with minimal performance impact. Functional coverage is also supported to further drive verification closure.
All the fundamental concepts and tools for understanding performance tuning in Java. Garbage collection, memory management and collector types and tools for profiling Java applications.
Srihitha Technologies provides Datastage Online Training in Ameerpet by real time Experts. For more information about Datastage online training in Ameerpet call 9885144200 / 9394799566.
The Linux Block Layer - Built for Fast StorageKernel TLV
The arrival of flash storage introduced a radical change in performance profiles of direct attached devices. At the time, it was obvious that Linux I/O stack needed to be redesigned in order to support devices capable of millions of IOPs, and with extremely low latency.
In this talk we revisit the changes the Linux block layer in the
last decade or so, that made it what it is today - a performant, scalable, robust and NUMA-aware subsystem. In addition, we cover the new NVMe over Fabrics support in Linux.
Sagi Grimberg
Sagi is Principal Architect and co-founder at LightBits Labs.
Flink Forward SF 2017: Stephan Ewen - Experiences running Flink at Very Large...Flink Forward
This talk shares experiences from deploying and tuning Flink steam processing applications for very large scale. We share lessons learned from users, contributors, and our own experiments about running demanding streaming jobs at scale. The talk will explain what aspects currently render a job as particularly demanding, show how to configure and tune a large scale Flink job, and outline what the Flink community is working on to make the out-of-the-box for experience as smooth as possible. We will, for example, dive into - analyzing and tuning checkpointing - selecting and configuring state backends - understanding common bottlenecks - understanding and configuring network parameters
This talk is from Distributed Data Summit SF 2018 - http://distributeddatasummit.com/2018-sf/sessions#chella
Audit logging is one of the most critical features in an enterprise-ready database in terms of security compliance. Furthermore, live traffic troubleshooting is critical for operators to troubleshoot production issues quickly. While past versions have lacked these critical features, the Cassandra team understood the need for better solutions and in the upcoming release of Cassandra both of these features now come out of the box which makes Cassandra even more awesome to work with. Cassandra now supports Audit logging and query logging as part of C* itself. As part of this talk, audience will learn about how to enable, configure, and tune audit logging for their C* clusters and how to log live traffic/queries for serverel needs including troubleshooting or even live traffic reply
Getting started with RISC-V verification what's next after compliance testingRISC-V International
The document discusses the CPU design verification (DV) process for RISC-V processors and the challenges presented by RISC-V's open standard nature. It covers developing a verification plan, obtaining tests and models, running simulations, and verifying until coverage metrics are met. Key aspects include using a reference model for configuration and comparison, techniques like self-check, signature comparison, trace logging and step-and-compare, and test suites like riscv-compliance. The presenter demonstrates step-and-compare verification between an Imperas reference model and RISC-V RTL using open source tools and models.
This document provides a crash course on runtime hacking of iOS applications. It discusses setting up the necessary environment, mapping out an application by decrypting and dumping binaries to obtain class information. It then demonstrates how to retrieve sensitive variables like credentials by directly accessing them at runtime using Cycript. Finally, it shows how functions can be manipulated to bypass security checks or modify application behavior persistently through injection.
Where is my bottleneck? Performance troubleshooting in FlinkFlink Forward
Flinkn Forward San Francisco 2022.
In this talk, we will cover various topics around performance issues that can arise when running a Flink job and how to troubleshoot them. We’ll start with the basics, like understanding what the job is doing and what backpressure is. Next, we will see how to identify bottlenecks and which tools or metrics can be helpful in the process. Finally, we will also discuss potential performance issues during the checkpointing or recovery process, as well as and some tips and Flink features that can speed up checkpointing and recovery times.
by
Piotr Nowojski
This document discusses instruction pipelining in computer processors. It begins by defining pipelining and explaining how it works like an assembly line to increase throughput. It then discusses different types of pipelines and introduces the MIPS instruction pipeline as an example. The document goes on to explain different types of pipeline hazards like structural hazards, control hazards, and data hazards. It provides examples of how to detect and resolve these hazards through techniques like forwarding, stalling, predicting, and delayed branching. Key concepts covered include pipeline registers, control signals, forwarding units, and branch prediction buffers.
This document provides an introduction to runtime hacking on iOS. It discusses setting up the environment, mapping out an application by decrypting and dumping binaries to obtain class information. It then covers techniques for dumping and modifying variables at runtime like retrieving sensitive user data. Methods for manipulating functions are also presented, such as bypassing authentication or jailbreak detection. Persistence techniques like injecting libraries are explained. Finally, it addresses considerations for hacking Swift applications. The overall goal is to quickly get people up to speed on runtime analysis and manipulation of third-party iOS apps.
Robot Framework is an open source test automation framework that can be used to test web, desktop, and mobile applications. It uses a keyword-driven design and has a modular architecture that makes it easy to extend with custom test libraries. Some benefits include being highly reusable, accessible for beginners, and having powerful logging capabilities. However, it does not support while loops or nested for loops, and working with non-string data types can be complicated. The framework operates independently of the system under test and uses test suites made up of test cases that can each be in their own namespace. Custom keywords, variables, and extensions are usually stored separately.
Java Concurrency and Performance | Multi Threading | Concurrency | Java Conc...Anand Narayanan
■ With the advent of multi-core processors the usage of single threaded programs is soon becoming obsolete. Java was built to be able to do many things at once. In computer lingo, we call this "concurrency". This is the main reason why Java is so useful. Today we see a lot of our applications running on multiple cores, concurrent java programs with multiple threads is the answer for effective performance and stability on multi-core based applications. Concurrency is among the utmost worries for newcomers to Java programming but there's no reason to let it deter you. Not only is excellent documentation available but also pictorial representations of each topic to make understanding much graceful and enhanced. Java threads have become easier to work with as the Java platform has evolved. In order to learn how to do multithreaded programming in Java , you need some building blocks. Our training expert with his rich training and consulting experience illustrates with real application based case studies.
Integrating Oracle Argus Safety with other Clinical Systems Using Argus Inter...Perficient
This document outlines the process for integrating Oracle Argus Safety with clinical systems using Argus Interchange's E2B functionality. It discusses identifying key stakeholders from IT, business, and quality assurance perspectives. It also covers system design, development and testing, implementation, and challenges. The example integration transfers data from source systems to Argus in an unidirectional manner using a combination of database manipulation, standardization to SDTM, and generation of E2B XML files for import into Argus. Extensive testing is recommended due to the custom development and regulatory implications.
VMworld 2013: Deep Dive into vSphere Log Management with vCenter Log InsightVMworld
VMworld 2013
Steve Flanders, VMware
Chengdu Huang, VMware
Learn more about VMworld and register at http://www.vmworld.com/index.jspa?src=socmed-vmworld-slideshare
Kernel Recipes 2018 - Live (Kernel) Patching: status quo and status futurus -...Anne Nicolas
The purpose of this talk is to provide a short overview of the current live patching facility inside the linux kernel (with a brief history excursion), describe the features it currently provides, and most importantly things that still need to be implemented / designed.
I presented a whirlwind tour of the most common benchmark tools used to measure parallel file system performance and reviewed case studies of how these have been used in the procurement of NERSC's large file systems at the 2022 Lustre User Group.
Similar to Enlightening the I/O Path: A Holistic Approach for Application Performance (USENIX FAST'17) (20)
Unveiling the Advantages of Agile Software Development.pdfbrainerhub1
Learn about Agile Software Development's advantages. Simplify your workflow to spur quicker innovation. Jump right in! We have also discussed the advantages.
UI5con 2024 - Keynote: Latest News about UI5 and it’s EcosystemPeter Muessig
Learn about the latest innovations in and around OpenUI5/SAPUI5: UI5 Tooling, UI5 linter, UI5 Web Components, Web Components Integration, UI5 2.x, UI5 GenAI.
Recording:
https://www.youtube.com/live/MSdGLG2zLy8?si=INxBHTqkwHhxV5Ta&t=0
8 Best Automated Android App Testing Tool and Framework in 2024.pdfkalichargn70th171
Regarding mobile operating systems, two major players dominate our thoughts: Android and iPhone. With Android leading the market, software development companies are focused on delivering apps compatible with this OS. Ensuring an app's functionality across various Android devices, OS versions, and hardware specifications is critical, making Android app testing essential.
The Key to Digital Success_ A Comprehensive Guide to Continuous Testing Integ...kalichargn70th171
In today's business landscape, digital integration is ubiquitous, demanding swift innovation as a necessity rather than a luxury. In a fiercely competitive market with heightened customer expectations, the timely launch of flawless digital products is crucial for both acquisition and retention—any delay risks ceding market share to competitors.
Consistent toolbox talks are critical for maintaining workplace safety, as they provide regular opportunities to address specific hazards and reinforce safe practices.
These brief, focused sessions ensure that safety is a continual conversation rather than a one-time event, which helps keep safety protocols fresh in employees' minds. Studies have shown that shorter, more frequent training sessions are more effective for retention and behavior change compared to longer, infrequent sessions.
Engaging workers regularly, toolbox talks promote a culture of safety, empower employees to voice concerns, and ultimately reduce the likelihood of accidents and injuries on site.
The traditional method of conducting safety talks with paper documents and lengthy meetings is not only time-consuming but also less effective. Manual tracking of attendance and compliance is prone to errors and inconsistencies, leading to gaps in safety communication and potential non-compliance with OSHA regulations. Switching to a digital solution like Safelyio offers significant advantages.
Safelyio automates the delivery and documentation of safety talks, ensuring consistency and accessibility. The microlearning approach breaks down complex safety protocols into manageable, bite-sized pieces, making it easier for employees to absorb and retain information.
This method minimizes disruptions to work schedules, eliminates the hassle of paperwork, and ensures that all safety communications are tracked and recorded accurately. Ultimately, using a digital platform like Safelyio enhances engagement, compliance, and overall safety performance on site. https://safelyio.com/
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian CompaniesQuickdice ERP
Explore the seamless transition to e-invoicing with this comprehensive guide tailored for Saudi Arabian businesses. Navigate the process effortlessly with step-by-step instructions designed to streamline implementation and enhance efficiency.
14 th Edition of International conference on computer visionShulagnaSarkar2
About the event
14th Edition of International conference on computer vision
Computer conferences organized by ScienceFather group. ScienceFather takes the privilege to invite speakers participants students delegates and exhibitors from across the globe to its International Conference on computer conferences to be held in the Various Beautiful cites of the world. computer conferences are a discussion of common Inventions-related issues and additionally trade information share proof thoughts and insight into advanced developments in the science inventions service system. New technology may create many materials and devices with a vast range of applications such as in Science medicine electronics biomaterials energy production and consumer products.
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WWDC 2024 Keynote Review: For CocoaCoders AustinPatrick Weigel
Overview of WWDC 2024 Keynote Address.
Covers: Apple Intelligence, iOS18, macOS Sequoia, iPadOS, watchOS, visionOS, and Apple TV+.
Understandable dialogue on Apple TV+
On-device app controlling AI.
Access to ChatGPT with a guest appearance by Chief Data Thief Sam Altman!
App Locking! iPhone Mirroring! And a Calculator!!
Using Query Store in Azure PostgreSQL to Understand Query PerformanceGrant Fritchey
Microsoft has added an excellent new extension in PostgreSQL on their Azure Platform. This session, presented at Posette 2024, covers what Query Store is and the types of information you can get out of it.
Most important New features of Oracle 23c for DBAs and Developers. You can get more idea from my youtube channel video from https://youtu.be/XvL5WtaC20A
Malibou Pitch Deck For Its €3M Seed Roundsjcobrien
French start-up Malibou raised a €3 million Seed Round to develop its payroll and human resources
management platform for VSEs and SMEs. The financing round was led by investors Breega, Y Combinator, and FCVC.
Microservice Teams - How the cloud changes the way we workSven Peters
A lot of technical challenges and complexity come with building a cloud-native and distributed architecture. The way we develop backend software has fundamentally changed in the last ten years. Managing a microservices architecture demands a lot of us to ensure observability and operational resiliency. But did you also change the way you run your development teams?
Sven will talk about Atlassian’s journey from a monolith to a multi-tenanted architecture and how it affected the way the engineering teams work. You will learn how we shifted to service ownership, moved to more autonomous teams (and its challenges), and established platform and enablement teams.
Hand Rolled Applicative User ValidationCode KataPhilip Schwarz
Could you use a simple piece of Scala validation code (granted, a very simplistic one too!) that you can rewrite, now and again, to refresh your basic understanding of Applicative operators <*>, <*, *>?
The goal is not to write perfect code showcasing validation, but rather, to provide a small, rough-and ready exercise to reinforce your muscle-memory.
Despite its grandiose-sounding title, this deck consists of just three slides showing the Scala 3 code to be rewritten whenever the details of the operators begin to fade away.
The code is my rough and ready translation of a Haskell user-validation program found in a book called Finding Success (and Failure) in Haskell - Fall in love with applicative functors.
38. Handling Transitive Dependency
• Possible states of dependent task
38
FG
inherit
BG BG
Blocked
on task
I/OFG
inherit
BG
wait wait
Blocked
on I/O
FG
inherit
BG
wait
Blocked at
admission stage
39. Handling Transitive Dependency
• Recording blocking status
39
FG
inherit
BG BG
Blocked
on task
I/OFG
inherit
BG
wait wait
Blocked
on I/O
FG
inherit
BG
wait
Blocked at
admission stage
40. Handling Transitive Dependency
• Recording blocking status
40
FG
inherit
BG BG
Task is
recorded
I/OFG
inherit
BG
wait
Blocked
on I/O
FG
inherit
BG
wait
Blocked at
admission stage
inherit
41. Handling Transitive Dependency
• Recording blocking status
41
FG
inherit
BG BG I/OFG
inherit
BG
reprio
I/O is
recorded
FG
inherit
BG
wait
Blocked at
admission stage
Task is
recorded
inherit
42. Handling Transitive Dependency
• Recording blocking status
42
FG
inherit
BG BG I/OFG
inherit
BG FG
inherit
BG
retryreprio
I/O is
recorded
Task is
recorded
inherit
43. Challenges
• How to accurately identify I/O criticality
• Enlightenment API
• I/O priority inheritance
• Recording blocking status
• How to effectively enforce I/O criticality
43
44. Criticality-Aware I/O Prioritization
• Caching layer
• Apply low dirty ratio for non-critical writes (1% by default)
• Block layer
• Isolate allocation of block queue slots
• Maintain 2 FIFO queues
• Schedule critical I/O first
• Limit # of outstanding non-critical I/Os (1 by default)
• Support queue promotion to resolve I/O dependency
44
45. Evaluation
• Implementation on Linux 3.13 w/ ext4
• Application studies
• PostgreSQL relational database
• Backend processes as foreground tasks
• I/O priority inheritance on LWLocks (semop)
• MongoDB document store
• Client threads as foreground tasks
• I/O priority inheritance on Pthread mutex and condition vars (futex)
• Redis key-value store
• Master process as foreground task
45
57. Summary of Other Results
• Performance results
• MongoDB: 12%-201% throughput, 5x-20x latency at 99.9th
• Redis: 7%-49% throughput, 2x-20x latency at 99.9th
• Analysis results
• System latency analysis using LatencyTOP
• System throughput vs. Application latency
• Need for holistic approach
57
58. Conclusions
• Key observation
• All the layers in the I/O path should be considered as a whole with I/O
priority inversion in mind for effective I/O prioritization
• Request-centric I/O prioritization
• Enlightens the I/O path solely for application performance
• Improves throughput and latency of real applications
• Ongoing work
• Practicalizing implementation
• Applying RCP to database cluster with multiple replicas
58