Bureaucrats, confirmed, Administrators
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[[File:Media-flash-memory-stick.svg]]
Python, Likers Linkers and Virtual Memory https://www.youtube.com/watch?v=twQKAoq2OPE
Reporting on "actual" memory usage of your application with smem http://linuxaria.com/pills/linux-terminal-check-who-uses-all-your-memory-with-smem
==Transparent Hugepages ==
* https://access.redhat.com/solutions/46111 for Fedora and RHEL Note: their commands at the end of the article for determining if HugePages are disabled do not work in my limited tests. I have both Ubuntu and CentOS systems which are using HugePages, yet <code>grep -i HugePages_Total /proc/meminfo</code> <code>cat /proc/sys/vm/nr_hugepages</code> and <code>sysctl vm.nr_hugepages</code> all report zero. Meanwhile <code>grep AnonHugePages /proc/meminfo</code> and <code>grep -e AnonHugePages /proc/*/smaps | awk '{ if($2>4) print $0} ' | awk -F "/" '{print $0; system("ps -fp " $3)} '</code> report actual usage. The biggest applications? [[mysql]]d, [[java]], [[python]], [[node]], polkitd, [[mongo]]d, [[httpd]]
Strangely, the value for <code>cat /sys/kernel/mm/transparent_hugepage/enabled</code>
<pre>[always] madvise never</pre>
[[Category:System Administration]]
[[Category:Memory]]
[[Category:Performance]]
[[Category:Kernel]]
[[Category:Configuration Management]]
