On Mon, Apr 21, 2008, Nicole wrote: > Hi > The swaplog files are about 156 megs. Altho I have some servers that have > swaplogs that are 1.6 gigs but are fine as they the servers have never been > restarted. > > I have never run squid -k rotate. I have another server that just started > exibiting the same sort of behaviour of slowing down. I tried lowing the > available disk size to force it trim some files and did a squid -k rotate but > it was still slow.
Hm. Well, you should run squid -k rotate once a day. > It's getting to be kind of a drag having to contantly wipe out the cache > every > few months when they get to a larger size. The disks are 146 Gig and are only > 56% full. I am trying to keep lowering the alloted available cache size to see > if there is a sweet spot. > > How often should squid -k rotate be used. It seems like there are various > opinions on its usage and frequency. Are you using AUFS on a recent FreeBSD (FreeBSD > 5.x) ? I've built a 4 x 18 gig test cache here (not enough RAM atm to run more of the disks :/) and the rebuild-from-swaplog is quite a bit faster than rebuild-from- cache. Check cache.log and see if its rebuilding from swaplog, or from cache (it'll say DIRTY.) I'd start by looking at iostat to see if Squid is doing a decent amount of IO, and vmstat / top to see if Squid has hit 100% CPU. The rebuilding logic happens synchronously - it doesn't use the async io routines to do background processing. I guess I should make it do that but that'll have to wait. Adrian -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -
