Le Mercredi 10 Février 2010 12:49:47, vous avez écrit : > > dont top list, > > > > we have seveal heavy load squids, and we realized that sometimes inet > > surf is slow, we've discovered that it is because IO (as you see in > > your top command more than 1% of IO waiting), so we purge our cache to > > dont let it rise cache_swap_high percentage very often > > The iowait time is more than 1%, at times between 20-50%. We've tried > purging the cache a few times but that only appears to give temporary > relief to the issue. I was looking to tune our configuration more > before ruling out the need for more caching servers or looking into > faster disks for just the cache. You may also change your filesystem, raiser4 or extf4, make a bigger caché , use other policy if you have enoguht ram, increase your mem cache and your maximum_mem_cache_object_size (or something like this) so your discache goes down
