Hi, I am running squid-2.4.STABLE6 (RedHat's RPM) on RedHat 7.3 with stock RedHat 2.4.18-18.7.x kernel.
The hardware configuration is as follows. Compaq ML350 Server Dual Xeon 2.2 GHz 2304 MB RAM 36 GB x 6 disks (4 used for cache + 1 for OS + 1 Spare) The excerpt of squid configuration is as follows cache_mem 128 MB cache_dir diskd /var/spool/squid 30000 32 256 Q1=72 Q2=64 cache_dir diskd /var/spool/squid1 30000 32 256 Q1=72 Q2=64 cache_dir diskd /var/spool/squid2 30000 32 256 Q1=72 Q2=64 cache_dir diskd /var/spool/squid3 30000 32 256 Q1=72 Q2=64 Here is the output from cachemgr HTTP Requests (All): 0.03622 0.04277 Cache Misses: 1.54242 1.54242 Cache Hits: 0.01745 0.01847 Near Hits: 1.54242 1.54242 Not-Modified Replies: 0.00463 0.00678 DNS Lookups: 0.00949 0.01153 ICP Queries: 0.00000 0.00000 Even during peak loads HTTP Requests (ALL) will not go more than 0.12 second and Cache Hits will be hovering around 0.02XXX second The cache comfortably does 170 req/second. But , at peak loads the CPU utilization goes upto 99%. What could be done to reduce the CPU utilization ? Venkatesh K
