ons 2009-07-01 klockan 05:07 -0700 skrev goody goody: > 2. secondly we are using RAID 5 and have very powerfull machine at > present as compared to previous one, and previous was working good > with the same amount of traffic and less powerfull system.
Please note that RAID5 can degrade performance quite noticeably for workloads like Squid with aufs/diskd. This due to the high amount of random writes. But it depends a lot on the RAID controller, and obviously the amount of drives installed in the RAID set and amount of (battery backed) memory used by the RAID controller for write optimizations.. > 4. i could not get chris robertson question regarding processors, i > have two dual core xeon processors(3.2 ghz) and i captured stats at > peak hours when performance was degraded. Squid only uses little more than one core at most. > So what should i do??? Try Squid-2.7, and aufs instead of diskd. And don't forget to check your cache.log to see if there is any relevant warnings/errors. Regards Henrik
