Cheatsheet

Display Linux kernel version

cat /proc/version

or

uname -a

Syscall

• Resources

  • Searchable Linux Syscall Table for x86 and x86_64 (opens in a new tab)
  • Linux System Calls quick and easy (opens in a new tab)
  • The Linux Kernel/Syscalls (opens in a new tab)

Syscall - pipe

• How fast are Linux pipes anyway? (opens in a new tab)

Syscall - sendfile

• Wikipedia - Zero-copy (opens in a new tab)

• sendfile(2) — Linux manual page (opens in a new tab)

• NGINX Documentation - Optimizing Performance for Serving Content - Enabling sendfile (opens in a new tab)

• IBM Developer - Efficient data transfer through zero copy (opens in a new tab)

  JDK NIO support zero copy on Linux and UNIX systems through the transferTo() method in java.nio.channels.FileChannel.

• NetSocket (Vert.x Stack - Docs 4.5.3 API) - sendFile (opens in a new tab)

Networking

netfilter

• The netfilter.org project (opens in a new tab)

SO_REUSEPORT

• Kernel

  • Kernel index [LWN.net] - SO_REUSEPORT (opens in a new tab)
  • Linux TCP SO_REUSEPORT — Usage and implementation | by Krishna Kumar | Flipkart Tech Blog (opens in a new tab)

• NGINX

  • NGINX Blog - Socket Sharding in NGINX Release 1.9.1 (opens in a new tab)

References

• The Linux Kernel documentation (opens in a new tab)
• THe Linux Kernel Core API Documentation (opens in a new tab)
• Kernel Map (opens in a new tab)