I have a virtual server with ubuntu 10.04.4 LTS and plesk (preinstalled by hosting company).Now i have seen that the buffers/cache are always empty.Current uptime is 22 days. free and htop shows the same values.root@server:/root# free -m             total       used       free     shared    buffers     cachedMem:          4096        540       3555          0          0          0-/+ buffers/cache:        540       3555Swap:         4096          0       4096mount info:root@server:/root# mount/dev/vzfs on / type reiserfs (rw,usrquota,grpquota)proc on /proc type proc (rw,relatime)sysfs on /sys type sysfs (rw,relatime)none on /dev/pts type devpts (rw,relatime)I have searched stackexchange/google but found nothing.How can I enable filecache or is this not possible cause of vzfs and all is good?!
Ubuntu filesystem buffers/cache always empty
ubuntu;filesystems;cache;openvz
The caching is done by the OpenVZ host and is shared between all containers on the node. OpenVZ is not a real virtual environment. It runs on the host node's kernel, which is what performs disk caching. You can think of it more as an isolated chroot.