jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

wagenet

glibc Versions

List of oldest supported version of top 10 Linux Distros and their glibc version according to distrowatch.com.

Summary

Out of all versions with published EOLs, 2.12 is the oldest glibc still active, found in CentOS 6.8.

If CentOS 6 and 7 are eliminated, the oldest glibc is 2.23 in Ubuntu and Slackware.

collinbarrett

/*
Windows
    Location: C:\Users\<YourUsername>\AppData\Roaming\Mozilla\Firefox\Profiles\<YourFirefoxProfile>\chrome
    Notes:
        If minimize, maximize, and close buttons are no longer visible, enable the Title Bar or Menu Bar in Firefox Customize.

macOS
    Location: /Users/<YourUsername>/Library/Application Support/Firefox/Profiles/<YourFirefoxProfile>/chrome
    Notes:
        If minimize, maximize, and close buttons overlap other controls, add the Flexible Space in Firefox Customize.

ikhoon

Armeria on Scala

• Unit 타입에 반환하는 함수의 반환값을 확인하지 않으면 컴파일러 워닝이 발생함
  • -Xfatal-warnings 옵션이 활성화 되면 컴파일도 실패됨
  • http4s-armeria/ArmeriaHttp4sHandler.scala at 39e3ae4847e071a80da3a8250ff6e405e58d55c6 · http4s/http4s-armeria · GitHub
• Function<? super HttpService, ? HttpService> 형태의 일 경우에 Scala Function에서 바로 형변환이 되지 않기 때문에 delegate => new MyHttpService(delegate) 를 해줘야 함
  • Decorator를 편하게 쓸수 있게 Scala Function용으로 하나 제공해주면 좋을것 같음
  • sttp/AbstractArmeriaBackend.scala at d556bfacf3ed587c6622d6a362aaa1cd81911030 · softwaremill/sttp · GitHub
  • [http4s-armeria/ArmeriaClientBuilder.scala at cc1ee774bedfa38387ce3eadfb002b719fbdcb6a · http4s/http4s-armeria · GitHub](https:

Raymo111

Arch Linux Install with BTRFS, LUKS, and systemd-boot, dual-booted with a UKI and Windows 11 on a shared EFI partition

By Raymo111

Last updated 2023-08-06

Disclaimer: I have personally tested every step of this. However, I'm not responsible for anything you do.

Pre-install

1. Boot Windows, install the latest updates, remove OEM bloatware, open Disk Management, and shrink the Windows partition to make room for Arch.
2. Download the latest Arch ISO and flash it with Etcher.
3. Control Panel > Power Options > Choose what the power buttons do > Change settings that are currently unavailable > Uncheck Fast startup.