linux--Essays

1.The Mind behind Linux

Https://www.ted.com/talks/linus_torvalds_the_mind_behind_linux

2.Emacs Org-mode, similar to markdown syntax, rich export format, latex language combination

3. System resource command, some need to install Sysstat package or PROCPS package

• Uptime
• Dmesg|tail
• Vmstat 1
• Mpstat-p all 1
• Pidstat 1
• IOSTAT-XZ 1
• Free-m
• Sar-n DEV 1
• Sar-n tcp,etcp 1
• Top

4.Go Race Detector

5.BTREE Implementation resolution

6. command to get the current number of network connections in each state, time_wait not too high

Netstat-n |awk '/^tcp/{++s[$NF]} END {for (a in S) print A, s[a]} '

7. Process Thread Throttling

Ulimit-u #单个用户进程数/etc/security/limits.conf #noproc is the maximum number of system processes /proc/sys/kernel/threads-Max # System maximum number of threads /usr/include/bits/local_lim.h #中查看单进程最大线程数和PTHREAD_THREADS_MAX有关 is also subject to thread stack size ulimit-s

8.Gorouteine Memory Stack 2K

9.weekly Report

• Achievement in this week
• Next Step
• Problem meet and support needed
• Suggestion
• Else

linux--Essays