Linux Memory Management

[anitsh]

Objectives

• [ ] How Linux Kernel Manages Memory?

• Find Top 10 Memory Consuming Process ps -eo pmem,pcpu,pid,args | tail -n +2 | sort -rnk 1 | head

ps : Current process snapshot report –e : Select all process o : User defined format pmem : User defined memory pcpu : User defined cpu pid : Process ID number args : Command tail -n +2 : Output lines starting to the second line sort -rnk 1 :reverse (r), numeric sort (n) by column 1 (memory) head : output the 10 first lines

Resource

• https://en.wikipedia.org/wiki/Memory_management
• https://en.wikipedia.org/wiki/Cheney%27s_algorithm
• https://www.2daygeek.com/linux-find-top-memory-consuming-processes

Related

186 #361 #112

[anitsh]

Out Of Memory (OOM) Situation and OOM Killer

• [ ] https://unix.stackexchange.com/questions/153585/how-does-the-oom-killer-decide-which-process-to-kill-first
• [ ] https://unix.stackexchange.com/questions/136291/will-linux-start-killing-my-processes-without-asking-me-if-memory-gets-short/136294#136294
• [ ] https://www.kernel.org/doc/Documentation/vm/memory-model.rst
• [ ] https://linux-mm.org/OOM_Killer

[anitsh]

Performance, Dynamic Analysis

• [ ] https://help.eclipse.org/2021-03/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Freference%2Fref-menu-refactor.htm | https://perf.wiki.kernel.org/index.php
• [ ] https://help.eclipse.org/2021-03/topic/org.eclipse.linuxtools.profiling.docs/Linux_Tools_Project/Profiling/User_Guide/User-Guide.html