====== FS Cache ====== ===== Cache takarítás ===== * https://discuss.aerospike.com/t/tuning-kernel-memory-for-performance/4195 * Flush RW cache: sync * To free pagecache: echo 1 > /proc/sys/vm/drop_caches * To free dentries and inodes: echo 2 > /proc/sys/vm/drop_caches * To free pagecache, dentries and inodes: echo 3 > /proc/sys/vm/drop_caches ===== Cache kikapcsolás ===== * http://serverfault.com/questions/500874/ext3-with-no-write-cache * Mountolás: mount -o sync -t ext3 /dev/sda1 /mnt/foo * Újra mountolás: mount -o remount,sync /mnt/foo ===== cache állapota ===== * https://medium.com/marionete/linux-disk-cache-was-always-there-741bef097e7f vmtouch -v server.tar.gz server.tar.gz [ ] 0/2 Files: 1 Directories: 0 Resident Pages: 0/2 0/8K 0% Elapsed: 5.8e-05 seconds