This page describes Pressure Stall Information (PSI), how to use it, tools and components that work with PSI, and some case studies showing how PSI is used in production today for resource control in large data centers.
Overview

PSI provides for the first time a canonical way to see resource pressure increases as they develop, with new pressure metrics for three major resources—memory, CPU, and IO.

These pressure metrics, in conjunction with cgroup2 and other kernel and userspace tools described below, allow you to detect resource shortages while they’re developing, and respond intelligently—by pausing or killing non-essentials, reallocating memory in the system, load shedding, or other actions.

PSI stats are like barometers that provide fair warning of impending resource shortages, enabling you to take more proactive, granular, and nuanced steps when resources start becoming scarce.

See the PSI git repo for additional information.

A tool to monitor I/O latency in real time. It shows disk latency in the same way as ping shows network latency.

Homepage: https://github.com/koct9i/ioping/ (migrated from http://code.google.com/p/ioping/)

Please send your patches, issues and questions to https://github.com/koct9i/ioping/issues/

FocusWriter is a simple, distraction-free writing environment. It utilizes a hide-away interface that you access by moving your mouse to the edges of the screen, allowing the program to have a familiar look and feel to it while still getting out of the way so that you can immerse yourself in your work. It’s available for Linux and Windows, and has been translated into many different languages.
Features:

• TXT, basic RTF, and basic ODT file support
• Timers and alarms
• Daily goals
• Fully customizable themes
• Typewriter sound effects (optional)
• Live statistics (optional)
• Spell-checking (optional)
• Multi-document support
• Sessions
• Portable mode (optional)
• Translated into over 20 languages

xdotool lets you programatically (or manually) simulate keyboard input and mouse activity,
move and resize windows, etc. It does this using X11's XTEST extension and other Xlib
functions.

   There is some support for Extended Window Manager Hints (aka EWMH or NetWM).  See the
   "EXTENDED WINDOW MANAGER HINTS" section for more information.

What is xdotool?

This tool lets you simulate keyboard input and mouse activity, move and resize windows, etc. It does this using X11’s XTEST extension and other Xlib functions.

Additionally, you can search for windows and move, resize, hide, and modify window properties like the title. If your window manager supports it, you can use xdotool to switch desktops, move windows between desktops, and change the number of desktops.

A flexible and powerful static content management system for building complex and beautiful websites out of flat files — for people who do not want to make a compromise between a CMS and a static blog engine.

Getting your ideas implemented is as easy as frying an egg.

ssh-agent is a program to hold in memory the private keys used by SSH for public-key authentication. When the agent is running, ssh forwards to it the signature requests from the server. The agent performs the private key operations and returns the results to ssh. It is useful if you keep your private keys encrypted on disk and you don’t want to type the password at each connection. Keeping the agent secure is critical: someone able to communicate with the agent can authenticate on your behalf on remote servers.

This describes a method for maintaining a separate ssh-agent to hold your ssh key for connecting to Toolforge/CloudVPS.

The problem

You use an ssh-agent to connect to your personal or company systems. You want to connect to Toolforge/CloudVPS using an agent and you created a separate ssh key to connect to Toolforge/CloudVPS, but you don't want to forward your personal key to Toolforge/CloudVPS systems. If you just add both keys to your existing agent, they both get forwarded to Toolforge/CloudVPS. It's a pain to constantly remove your personal key from your agent each time you want to connect to Toolforge/CloudVPS. Additionally, you might be connected to both your personal system and Toolforge/CloudVPS simultaneously, so just removing the key is insufficent; you must run a separate ssh-agent. You don't want to run one agent per connection because then you have to type your passphrase on every connection (and you have a nice long secure passphrase on your key).

This page describes a method for getting your shell to maintain two agents, your primary agent and your Toolforge/CloudVPS agent. When you connect to Toolforge/CloudVPS you connect to the existing Toolforge/CloudVPS agent (or create one if it doesn't exist) and the rest of the time you use your default agent.

DisplayLink driver installer for Debian and Ubuntu based Linux distributions: Debian, Ubuntu, Elementary OS, Mint, Kali, Deepin and many more! Full list of all supported platforms

Free backup software to store encrypted backups online
For Windows, macOS and Linux

The SPICE protocol supports guests with more than one monitor. Windows guests and Linux guests behave somewhat differently, so they need to be configured in slightly different ways.

Dynamic instrumentation toolkit for developers, reverse-engineers, and security researchers.

Scriptable

Inject your own scripts into black box processes. Hook any function, spy on crypto APIs or trace private application code, no source code needed. Edit, hit save, and instantly see the results. All without compilation steps or program restarts.