cache_dir's are 'checked' in order; I suggest putting the coss directories first. adrian On Fri, Dec 07, 2007, Amos Jeffries wrote: > Alexandre Correa wrote: > >can 2 cache_dir on the same hd (dedicated for squid) cause performance > >impact ? > > > >i?m using cache_dir aufs ... and cache_dir coss (objetcs smaller than > >1000k) > > > >cache_dir aufs /var/spool/squid/cache 110000 32 256 > >cache_dir coss /var/spool/squid/onda_coss01 6000 max-size=1000000 > >maxfullbufs=4 membufs=20 block-size=4096 > > > > > >thanks !! > > > > Looks good. Just some hints though... > > You'd do well to set min-size on the AUFS dir, to push the smaller > objects into COSS. At present small objects can go to either, and large > only in AUFS. > > A 4KB block-size may cause a lot of watse if you get a large number of > small objects such as optimized web pages or spacer images. The default > 512 is sufficient for COSS dir up to 8GB large > Not worth changing it now though if any important data has already > gone to COSS. Would require a destroy and rebuild to fix that. > > Two on same HDD might drag each other down a little, but no more than a > single large cachedir doing the same throughput. Unfortunately squid is > not head-optimised for disk usage yet. COSS is more in-memory than the > others so it should still be a net gain over a single pure aufs. > > Amos -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -
