Sysctl

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Tuning linux with sysctl


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Tuning memory

vm.swappiness

Percentage of free memory before activating swap.

Default is 60



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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