Hey thank you amos for your reply, just wanted to ask couple of things more. how many coss directory should be or can be ideally created on single physical drive. As there is a restriction for 60gb, i am using 2x coss (30gb each) + 1x auf ( 70gb each ) on physical drive. Will using more than one coss directory have any bad effect or is it ok ? Will creating 3 or 4 coss directory on single physical drive would have any bad effect such as io? What should be ideal total cache size for good hit ratio, as i have read some where that large cache size doesn't mean better hit ratio? Thanks a million ---------------------------------------- > Date: Thu, 8 Jul 2010 00:44:05 +0000 > From: squid3@xxxxxxxxxxxxx > To: squid-users@xxxxxxxxxxxxxxx > Subject: Re: Ideal partition size for good hit ratio ? > > On Wed, 7 Jul 2010 21:22:33 +0000, sameer khan > wrote: >> hey all, >> >> >> Can any one recommend or share their experience for good hit ratio and >> ideal partition size ?. > > Squid does not care about partitions. Two partitions on one drive spindle > with a cache_dir each will have as may IO clashes as two cache_dir on one > partition on the same drive spindle. > >> Does having multiple directory have any effect or there should be only >> one directory per drive ? > > Per Spindle. > > Partitions only matter if your drive is advanced enough to have multiple > independent read/write heads and your partitioning is fine grained enough > to match exactly to a particular platter. > > The disk rule-of-thumb generalization is one physical disk one cache_dir. > The exception being COSS which can be paired with another cache_dir type on > one drive. > > Amos _________________________________________________________________ http://clk.atdmt.com/UKM/go/195013117/direct/01/
