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denji/linux-mem-swap-cache-flush.sh

Last active August 11, 2020 22:15
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fincore [options] files... Flush Linux pagecache, dentrie & inode (cache) + reswaping 0B
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linux-mem-swap-cache-flush.sh
#!/usr/bin/sh
# Flush Linux pagecache, dentrie & inode (cache)
# Reswaping 0B
MIN_MEMORY=78643200 # Reswap only if there is free RAM (75MB)
#PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
#PATH=/bin:/sbin:$PATH
# Flush pagecache + reswaping 0B:
(sync && echo 1 > /proc/sys/vm/drop_caches; if [ "`grep MemFree /proc/meminfo | grep -Eo '[0-9]+'`" -gt "$MIN_MEMORY" ]; then (swapoff -a && swapon -a); fi)
# Flush dentrie и inode (cache) + reswaping 0B:
# (sync && echo 2 > /proc/sys/vm/drop_caches; if [ "`grep MemFree /proc/meminfo | grep -Eo '[0-9]+'`" -gt "$MIN_MEMORY" ]; then (swapoff -a && swapon -a); fi)
# Flush pagecache, dentrie & inode (cache) + reswaping 0B:
# (sync && echo 3 > /proc/sys/vm/drop_caches; if [ "`grep MemFree /proc/meminfo | grep -Eo '[0-9]+'`" -gt "$MIN_MEMORY" ]; then (swapoff -a && swapon -a); fi)
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