Sysctl: Difference between revisions
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=Tuning memory= | =Tuning memory= | ||
==vm.swappiness== | ==vm.swappiness== | ||
Percentage of free memory before activating swap. | |||
Default is 60 | Default is 60 | ||
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To free/clear | === Links === | ||
*[https://linuxhint.com/understanding_vm_swappiness/ Understanding vm.swappiness] | |||
*https://major.io/2008/12/03/reducing-inode-and-dentry-caches-to-keep-oom-killer-at-bay/ | |||
== vm.vfs_cache_pressure == | |||
Clear cache: | |||
echo 1 > /proc/sys/vm/drop_caches | |||
To free/clear all caches: | |||
echo 3 > /proc/sys/vm/drop_caches | echo 3 > /proc/sys/vm/drop_caches | ||
Latest revision as of 12:59, 29 October 2021
Tuning linux with sysctl
Links
- https://www.kernel.org/doc/Documentation/sysctl/vm.txt
- https://klaver.it/linux/sysctl.conf
- https://wiki.mikejung.biz/Sysctl_tweaks
Tuning memory
vm.swappiness
Percentage of free memory before activating swap.
Default is 60
Links
- Understanding vm.swappiness
- https://major.io/2008/12/03/reducing-inode-and-dentry-caches-to-keep-oom-killer-at-bay/
vm.vfs_cache_pressure
Clear cache:
echo 1 > /proc/sys/vm/drop_caches
To free/clear all caches:
echo 3 > /proc/sys/vm/drop_caches
