Seems Linux has IO scheduling through a program called ionice. Has anyone here experimented with using it rather than vacuum sleep settings?
http://linux.die.net/man/1/ionice This program sets the io scheduling class and priority for a program. As of this writing, Linux supports 3 scheduling classes: Idle. A program running with idle io priority will only get disk time when no other program has asked for disk io for a defined grace period. The impact of idle io processes on normal system activity should be zero.[...] Best effort. This is the default scheduling class for any process that hasn't asked for a specific io priority. Programs inherit the CPU nice setting for io priorities. [...] http://friedcpu.wordpress.com/2007/07/17/why-arent-you-using-ionice-yet/ ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org
