![]() If they did, an adversary could draw conclusions about the secret data. Not all of the operations need to execute in the same amount of time, but timing variations must not depend on secret data. Revisiting constant timeĪ constant-time cryptographic algorithm always executes in the same amount of time regardless of the input. ![]() ![]() We will also explore the intermediate representation (IR) generated when this feature is implemented and consider problems that arise in later phases of code generation, such as instruction selection. The Rust crypto community has responded with several approaches, and in this post, we will explore one such approach: the implementation of a feature in the Rust compiler (rustc) that provides users greater control over generated code. Part 1 discussed challenges with constant-time implementations in Rust and WebAssembly and how optimization barriers can mitigate risk. Monitor NVidia hardware sensor values (e.g.Welcome to the second part of our posts on the challenges of implementing constant-time Rust code. Show GPU usage stats for Intel, NVidia, or Radeon GPUs. # print GPU performance stats with color every second # show disk-related virtual memory access statistics # show all virtual memory stats in megabytes every 1sec Show virtual memory, buffer, cache, and paging information. # show RAM and SWAP usage info along with buffer/cache stats and totals # show reports of page faults and memory statistics for PID 1234 every 2sec # show stats for each pid with human-readable sizes and full commands w/ args Show per-process CPU usage statistics including IO load, interrupt load, wait time, etc. # show utilization of all processors on the system every 1sec Show per-core CPU usage statistics including IO load, interrupt load, system load, user load, etc. ![]() Show info about the available RAM slots and installed chips.īarebones process resource usage monitoring. Show info about the available CPU slots and installed CPUs. Ubuntu's builtin system status summary tool that displays whenever you SSH in. Sar -B -b -d -I ALL -m ALL -n ALL -q -r ALL -S -u ALL -v -W -w -y 1 # show network stats by interface/device every 2sec Osqueryi 'SELECT count(pid) AS total, name FROM processes GROUP BY name ORDER BY total desc LIMIT 10'Įcho 'ENABLED="true"' > /etc/default/sysstat Osqueryi -json "SELECT * FROM routes WHERE destination = '::1'" # show all gateway routes to the internet in json format # show all processes listening on local ports Run SQL queries on your system setup and resources. # show all processes and individual threads Very useful when you can't tell what's causing slowness from `htop` alone. Ranks all possible sources of slowness independent of individual processes, highlights potential bottlenecks or high resource usage areas in red. CPU/disk/network/temperature/hardware/etc.). Great for finding out what's causing system-wide slowness when you're not sure whether what the culprit is (e.g. # show advanced cpu, filesystem, ipc, locking, and asyncio stats every 2secĭstat -cpu-adv -fs -aio -ipc -lock 2 # give an update of cpu, disk, and network usage every 5sec # run nmon then press c/m/r/etc to enable/disable each pane in the ncurses UIĪ minimalist utility that prints a colored one-line summary of system stats every second. Jack-of-all-trades tool similar to `glances`, but with an interactive CLI UI to switch between panes for each type of resource. # start a webserver to view glances output in a web UI on Prints pretty much everything you need to know at a glance, including container resource usage, active processes, network and disk IO usage, and other stats. `htop`, `iftop`, `iotop`, `gpustat`, `ctop`, and more, all rolled into one tool. If you would like to suggest changes/additions to this list you can comment on (), ping me on Twitter or find my contact email on (). On non-Ubuntu/Debian-based Linuxes you should replace any instance of `apt install xyz` below with `pkg install xyz`/`brew install xyz`/`yum install xyz`/`nix install xyz`/etc. `□` Utiltities marked with a rainbow have glorious xterm256/full-color output `⭐️` I've added a star next to utilities that I find to be extremely well-built or well-suited to solving their particular task ![]() but when I need them, boy am I glad they exist! Some of them I use daily, others I only use once a year or less. *An opinionated list of CLI utilities for monitoring and inspecting Linux/BSD systems.*īelow is a collection of CLI tools that I've personally used while doing Linux/BSD systems administration over the past 10+ years. # Unix System Monitoring and Diagnostic CLI Tools ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |