Are you able to perform a wget from the machine on a known fast source? Like a mirror to test the Internet connection... On Tue, Jul 24, 2012 at 10:38 PM, Amos Jeffries <squid3@xxxxxxxxxxxxx> wrote: > On 24/07/2012 7:21 p.m., Alamgir Shamim wrote: >> >> Hello, >> >> We are using squid version squid-2.6.STABLE21-6.el5. But getting very >> poor performance. >> >> Our total Internet user are almost 750. At a time 500 to 600 user >> browse internet. >> >> all of them are getting slow response. it takes 10 to 30 second to load a >> page. >> >> Here I am giving you some out put. >> >> top out put... >> >> ========= >> >> top - 12:54:09 up 31 days, 5:59, 2 users, load average: 0.18, 0.24, >> 0.24 >> >> Tasks: 80 total, 1 running, 79 sleeping, 0 stopped, 0 zombie >> >> Cpu(s): 1.5%us, 0.2%sy, 0.0%ni, 93.5%id, 4.2%wa, 0.0%hi, 0.6%si, >> 0.0%st >> >> Mem: 2075016k total, 2020432k used, 54584k free, 233784k buffers >> >> Swap: 2031608k total, 96k used, 2031512k free, 1538140k cached >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> >> 12866 squid 15 0 100m 70m 2508 S 3 3.5 4:56.96 squid >> >> >> 6815 root 18 0 10936 4280 428 S 0 0.2 0:00.00 squid > > >> >> >> >> free -m output >> >> ============ >> >> [root@proxy253 squid]# free -m >> >> total used free shared buffers cached >> >> Mem: 2026 1973 53 0 228 1502 >> >> -/+ buffers/cache: 242 1783 >> >> Swap: 1983 0 1983 >> >> Processor infor >> >> ============== >> >> processor : 0 >> >> vendor_id : GenuineIntel >> >> cpu family : 15 >> >> model : 4 >> >> model name : Intel(R) Xeon(TM) CPU 3.20GHz >> >> stepping : 3 >> >> cpu MHz : 3200.343 >> >> cache size : 2048 KB >> >> physical id : 0 >> >> siblings : 2 >> >> ------------------------ >> >> processor : 1 >> >> vendor_id : GenuineIntel >> >> cpu family : 15 >> >> model : 4 >> >> model name : Intel(R) Xeon(TM) CPU 3.20GHz >> >> stepping : 3 >> >> cpu MHz : 3200.343 >> >> cache size : 2048 KB >> >> physical id : 0 >> >> siblings : 2 >> >> ------------------------- >> >> Could you please let me know what might be the reason for getting slow >> performance. We have 14 mbps of Internet bandwidth. >> >> We are doing some content filtering also with squid. > > > There are several possible reasons: > > * you have configured squid in a inefficient way > - I'm happy to do free performance audits here if you want to paste your > squid.conf to the list (obscure the cachemgr_passwd detail though please) > > * you are content filtering > - this is a major slowdown for Squid no matter what type of filtering is > being done > > * overloaded or slow disks I/O speeds on disk cache > - only relevant if you are disk caching > > * 2.6 will be adding to the slowdown > - 2.7 series had a performance focus on development and is a good 20% > faster just in the code. > - 2.6 has low HTTP/1.1 compliance, meaning you loose out on many HTTP/1.1 > performance features available in later releases. > > Amos > -- Regards, Jason Leschnik. [m] 0432 35 4224 [w@] jason dot leschnik <at> ansto dot gov dot au [U@] jml974@xxxxxxxxxx
