A tutorial for beginners who are curious to learn about the Linux boot process. If you have any more doubts, you can contact me through my email given in the slide, or through my blog: mastro77.blogspot.in
This PPT shares some information on what is booting process and different stages in it. Importance of BIOS and BootROM. Steps involved for loading kernel into RAM. What is the importance of init RAM disk (initrd), when 1st user space application is started and who will create init process.
Whether you're refining your business ideas, planning to explore your business digitally or looking for a marketing campaign for your business, Webcome Digital brings tools you need to do it right and get it done.
A tutorial for beginners who are curious to learn about the Linux boot process. If you have any more doubts, you can contact me through my email given in the slide, or through my blog: mastro77.blogspot.in
This PPT shares some information on what is booting process and different stages in it. Importance of BIOS and BootROM. Steps involved for loading kernel into RAM. What is the importance of init RAM disk (initrd), when 1st user space application is started and who will create init process.
Whether you're refining your business ideas, planning to explore your business digitally or looking for a marketing campaign for your business, Webcome Digital brings tools you need to do it right and get it done.
FIMA's latest whitepaper evaluates how financial services companies are managing the challenges posed by data quality management. By analyzing which data types and data characteristics businesses are struggling with, it uncovers the true business costs associated with data quality. It will also gauge how data governance programs are maturing and how they are being measured. Finally, it assesses how data is being managed within financial institutions.
Key findings include:
Data quality has never been more important for financial institutions, but most of those companies feel their data is only mediocre: Quality data serves a myriad of central business goals, from risk reduction to increased productivity. Unfortunately, many businesses continue to struggle with data quality, despite the fact that four-fifths of them have it ranked as a top priority.
The top two business functions impacted by poor data quality are regulatory compliance and risk management: Because these concerns tend to be the most important drivers of data quality, many financial institutions see data governance as a “must-do,” rather than a ROI-boosting activity. Furthermore, the vast majority of financial services companies can not quantify the business cost of poor data quality.
Financial institutions vary greatly in the maturity of their data governance programs: Data governance cannot be overlooked – unsurprisingly, businesses with formalized data governance programs reported that their data was higher quality than most other groups.
Data quality management requires close collaboration between business and IT leaders: That collaboration already exists for 83% of respondents in this study, who say that IT and business leaders work together to manage data quality in their organizations. However, the tools these businesses use to manage their data are not all equal, leading to an uneven allocation of resources.
Guide to Windows 7 - Managing File SystemsGene Carboni
This video explains how to manage file systems. Learn the file system features and limits in Windows 7. Review file and folder attributes used in the FAT and NTFS file systems. Get an explanation of file and folder permission, permission scopes and inheritance, and the impact of ownership. Learn how to use previous versions of files
[Business Plan] PT Artoncode Indonesia May 2016 Marlin Sugama
My latest business plan for Artoncode (a game development studio), which at the time explored expanding strategy from international 3rd party contractor to having additional intellectual property development.
As a user, when you press the power button of system, you get the login screen on your monitor and after login starts working.
Have you ever think what is going between you press power button and login screen appear?
There is a boot process for any operating system which executed one-by-one, and finally, you get the Operating system’s login screen.
Here we go through the Linux boot process stage-by-stage.
There are six high-level stages for Linux boot process:
BIOS – Basic Input/Output System executes MBR
MBR – Master Boot Record execute GRUB
GRUB – Grand Unified Bootloader executes Kernel
Kernel – Kernel executes /sbin/init
Init – Init executes runlevel programs
Runlevel – Runlevel programs are executed from /etc/rc.d/rc*.d/
Read original article here: https://linuxconcept.com/linux-boot-process-step-by-step-explained/
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
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.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
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.
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.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
3. BIOS(Basic Input/Output System)
Integrity checks.
Searches, loads and executes the boot loader.
Looks for boot loader in cd-rom, or hard
drive(Depending on the BIOS settings).
Once the boot loader program is detected and
loaded into the memory, BIOS gives the control to
MBR bootloader.
BIOS loads and executes the MBR boot loader.
4. MBR(Master Boot Record)
Located in 1st sector of the bootable disk
512 bytes in size (Bootloader info + Partition table info+ validation check).Loads and Executes
Bootloader
5. Bootloader (GRUB)
Grand Unified Bootloader.
Displays a splash screen.Loads kernel image specified in
grub configuration file.
Grub configuration file is /boot/grub/grub.conf sample
grub.conf of my CentOS.
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-194.el5PAE)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-194.el5PAE ro
root=LABEL=/
initrd /boot/initrd-2.6.18-194.el5PAE.img
7. Kernel (Continued...)
Call mem_init():calculates max_mapnr, totalram_pages
and high_memory and prints out the "Memory: ..." line.
kmem_cache_sizes_init(), finish slab allocator
initialisation.Initialise data structures used by procfs.
fork_init()
Create various slab caches needed for VFS, VM, buffer
cache, etc.
If quota support is compiled into the kernel, create and
initialise a special slab cache for it.
Perform arch-specific "check for bugs"
8. Kernel (Continued...)
Create a kernel thread init() which execs
execute_command if supplied via "init=" boot parameter
or exec /sbin/init, /etc/init, /bin/init, /bin/sh.
Go into the idle loop, this is an idle thread with pid=0
9. Init
Looks at the /etc/inittab file to decide the Linux
run level.
Init identifies the default initlevel from /etc/inittab
and uses that to load all appropriate program.
Execute ‘grep initdefault /etc/inittab’ on your
system to identify the default run level
Typically you would set the default run level to
either 3 or 5.
10. Runlevel
Depending on default init level setting, the system will
execute the programs from one of the following directories.
Run level 0 – /etc/rc.d/rc0.d/
Run level 1 – /etc/rc.d/rc1.d/
.
.
.
Run level 6 – /etc/rc.d/rc6.d/
Under the /etc/rc.d/rc*.d/ directories, programs that start with
S and K.
Programs starts with S are used during startup. S for startup.
Programs starts with K are used during shutdown. K for kill.