一些 Linux 培训笔记

最新推荐文章于 2025-12-18 16:05:31 发布

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文章标签：

#linux #performance #table #leak #thread #less

本文探讨了Linux作为单块(monolithic)内核的特点及其优势，特别是所有组件在同一地址空间运行所带来的性能提升。文中还介绍了如何通过具体命令检查内存泄漏，包括使用/proc文件系统来监控进程状态。

Linux is a MONOLITHIC kernel

(Other option is MICRO = tiny kernel, minimal)

Monolithic - everything is in same address space

+: performance is greatly improved

(less memory switching!!)

cd /boot

more system.map | grep sysopen

/proc:

more /proc/$$/stat

more /proc/$$/status

A simple script to check memory leak by simply reading /prov

Vm=`more /proc/3370/status | grep VmSize | tr [S ' ' | cut -d' ' -f2`

if [[ $VM -gt 5000 ]] ; then

echo "Potential memory leak"

watch -n 2 echo `fdsfsafas` >> /tmp/file/filename

gdb:

x/20s pointerToArgvValue

thread apply threadID info registers

fuser /mnt

lsof | grep /mnt