A thread is a lightweight process that shares resources like memory with other threads in the same process. Using threads allows a process to perform multiple tasks simultaneously. Threads can improve responsiveness when one part of a program is blocked and allow for resource sharing. Creating threads is more efficient than processes. There are different models for how user-level threads map to kernel threads, including one-to-one, many-to-one, and many-to-many mappings. Popular thread APIs include POSIX threads, Windows threads, and Java threads.
A thread is a portion of code that may be executed independently of the main program.
For example, a program may have an open thread waiting for a specific event to occur or running a separate job, allowing the main program to perform other tasks.
A program is capable of having multiple threads open at once and will either terminate or suspend them after a task is completed, or the program is closed.
A thread is a portion of code that may be executed independently of the main program.
For example, a program may have an open thread waiting for a specific event to occur or running a separate job, allowing the main program to perform other tasks.
A program is capable of having multiple threads open at once and will either terminate or suspend them after a task is completed, or the program is closed.
In this presentation, I am explaining about Threads, types of threads, its advantages and disadvantages, difference between Process and Threads, multithreading and its type.
"Like the ppt if you liked the ppt"
LinkedIn - https://in.linkedin.com/in/prakharmaurya
Operating system: threads(mulithreading,benefits of threads, types of thread)sonuu__
Hello techies, this is a presentation by my team on operating system threads..
Reference::Galvin
Hope this reference makes your learning experience well.
threads and its types ....in operating system ..Nimrakhan89
There are two types of threads to be managed in a modern system: User threads and kernel threads. User threads are supported above the kernel, without kernel support. These are the threads that application programmers would put into their programs. Kernel threads are supported within the kernel of the OS itself.
This is the twelfth set of slightly updated slides from a Perl programming course that I held some years ago.
I want to share it with everyone looking for intransitive Perl-knowledge.
A table of content for all presentations can be found at i-can.eu.
The source code for the examples and the presentations in ODP format are on https://github.com/kberov/PerlProgrammingCourse
In this presentation, I am explaining about Threads, types of threads, its advantages and disadvantages, difference between Process and Threads, multithreading and its type.
"Like the ppt if you liked the ppt"
LinkedIn - https://in.linkedin.com/in/prakharmaurya
Operating system: threads(mulithreading,benefits of threads, types of thread)sonuu__
Hello techies, this is a presentation by my team on operating system threads..
Reference::Galvin
Hope this reference makes your learning experience well.
threads and its types ....in operating system ..Nimrakhan89
There are two types of threads to be managed in a modern system: User threads and kernel threads. User threads are supported above the kernel, without kernel support. These are the threads that application programmers would put into their programs. Kernel threads are supported within the kernel of the OS itself.
This is the twelfth set of slightly updated slides from a Perl programming course that I held some years ago.
I want to share it with everyone looking for intransitive Perl-knowledge.
A table of content for all presentations can be found at i-can.eu.
The source code for the examples and the presentations in ODP format are on https://github.com/kberov/PerlProgrammingCourse
operating systems , ch-04 third level, Faculity of Applied Scinces, Seiyun University. انظمة التشغيل لطلاب المستوى الثالث بكلية الحاسبات بجامعة سيئون المحاضرة 04
Linux Memory Management
1.Memory Structure of Linux OS.
2.How Program is loaded into the memory.
3.Address Translation.
4.Feature for Multithreading and Multiprocessing.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
2. What?
A thread is called a lightweight process:
●
it is comprised over a thread ID, program counter, a register set
and a stack
●
it shares with other threads belonging to the same process its code
section, data section and other OS resources (e.g., open files)
●
a process that has multiples threads can do more than one task at a
time
A traditional (or heavyweight) process has a single thread of
control.
Operating System 2011/2012
3. Why?
A single application may be required to perform several
similar tasks (such as Web server and Word processor).
●
One solution is to have the a single process for each Web
request or Word document. Each process perform on a single
request/document => a separate process is created to service
that request.
●
Process creation is time consuming and resource intensive.
●
Rather than creating another process, the server will create a
new thread to service the request and resume listening for
additional requests.
●
Operating System 2011/2012
5. Benefits
Responsiveness
●
One part of a program can continue running even if
another part is blocked
●
Resource Sharing
●
Threads of the same process share the same memory
space and resources
●
Economy
●
Much less time consuming to create and manage threads
than processes
●
Scalability
●
Each thread can run in parallel on a different processor
●
Operating System 2011/2012
6. User Threads
Thread management done by user-level threads library is
without the intervention of the kernel
●
Fast to create and manager
●
If the kernel is single threaded, any user-level thread
performing a blocking system call will cause the entire
process to block
User thread libraries
●
POSIX Pthreads
●
Mach C-threads
●
Solaris 2 UI-threads
Operating System 2011/2012
7. Kernel Threads
Supported by the Kernel
●
Slower to create and manage than user threads
●
If thread performs a blocking system call, the kernel can
schedule another thread in the application for execution
●
In multi-processor environments, the kernel can schedule
threads on multiple processors
Examples
●
Windows 95/98/NT/2000
●
Solaris
●
Linux
Operating System 2011/2012
9. One-to-One
Each user-level thread maps to kernel thread.
●
Another thread can run when one thread makes a blocking
call
●
Multiple threads an run in parallel on a MP machine
●
Overhead of creating a kernel thread for each user thread
●
Most implementations limit the number of threads supported
Examples
●
Windows 95-2000
●
OS/2
●
Linux
Operating System 2011/2012
10. Many-to-One
Many user-level threads mapped to single kernel thread.
●
Efficient - thread management done in user space
●
Entire process will block if a thread makes a blocking
system call
●
Only one thread can access the kernel, no parallel processing
in MP environment
Operating System 2011/2012
11. Many-to-Many
Allows many user level threads to be mapped to smaller or
equal number of kernel threads.
As many user threads as necessary can be created.
Corresponding kernel threads can run in parallel on a
multiprocessor.
When a thread performs a
blocking system call, the kernel
can schedule another thread for
execution.
Allows true concurrency in a MP
environment and does not
restrict number of threads that
can be created.
Operating System 2011/2012
12. Two Level Model
Has all the functionality of the many-to many model but also
allows a user-level thread to be bound to a kernel thread
Operating System 2011/2012
13. API
API for creating and managing threads
●
No kernel support, strictly in use space so no system calls
involved
●
Kernel level directly supported by the OS. All code and data
structures for the library exits in kernel spacer
●
An API call typically invokes a system call
●
Three main libraries in use
●
POSIX (Portable Operating System Interface) threads
●
Win32
●
Java
Operating System 2011/2012
14. Pthreads
Pthreads refers to the POSIX standard (IEEE 1003.1c)
deifining an API for thread creation and synchronization
●
Pthreads is an IEEE and Open Group certified product
●
The Open Group is a vendor-neutral and technology-neutral
consortium, whose vision of Boundaryless Information
Flow™ will enable access to integrated information, within
and among enterprises, based on open standards and global
interoperability.
●
This is a specification for thread behavior not an
implementation
●
Implemented by Solaris, Linux, MacOS X and Tru64
●
Operating System 2011/2012
15. Windows XP Threads
Implements the one-to-one mapping
●
Each thread contains: a thread id, register set, separate user
and kernel stacks private data storage area
●
A Windows XP application runs as a separate process and
each process may contain one or more threads
●
The register set, stacks, and private storage area are known
as the context of the threads
●
The primary data structures of a thread include: ETHREAD
(executive thread block), KTHREAD (kernel thread block),
TEB (thread environment block)
●
Also provides support for a fiber library which implements
the many-to-many model
●
Operating System 2011/2012
16. Java
Java threads may be created by extending the Thread class or
implementing the Runnable interface
●
Java threads are managed by the JVM
●
Not really a user- or kernel-level thread, support provided at
the language level
●
No global data in Java, data is shared by passing the
reference to the appropriate threads
●
The JVM specification does not indicate how threads should
be mapped to the underlying OS
●
Windows 95/98/NT/2000 use the one-to-one model (each
Java thread maps to a kernel thread)
●
Solaris 2 used the many-to-many model
●
Operating System 2011/2012
18. Thread pools
Though creating a new thread is more efficient than creating a
new process, there are still some issues
There is a delay in creating the thread and it will be discarded
when done
There is no limit put on how many threads are allowed to be
created and system resources could be exhausted
Create a number of threads in a pool where they await work.
When needed, thread is awoken, when finished returns to pool
to await more work
Operating System 2011/2012
19. Thread pools – cont.
Advantages:
●
●
●
Usually slightly faster to service a request with an existing
thread than create a new thread
Allows the number of threads in the application(s) to be
bound to the size of the pool
Size of the pool can be dynamically adjusted based on usage
patterns
Operating System 2011/2012