[squid-users] Optimizing squid
Yuri Voinov
yvoinov at gmail.com
Wed Feb 24 20:13:15 UTC 2016
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AFAIK, if you solve issue with cache_mem 10 GB and completely disabled
disk cache, then you had disk IO bottleneck exactly. You completely
disable disk caches. So, all obvious now.
But - what you will do after squid restart? :))))))))))))) A deadly cold
memory cache, hehehe
25.02.16 1:44, Heiler Bemerguy пишет:
>
> Hi Eliezer, thanks for your reply.
>
> As you've suggested, I removed all cache_dirs to verify if the rest
was stable/fast and raised cache_mem to 10GB. I didn't disable access
logs because we really need it..
>
> And it is super fast, I can't even notice it using only ONE core..
(and it isn't running as smp)
>
> %Cpu0 : 0,7 us, 1,0 sy, 0,0 ni, 98,3 id, 0,0 wa, 0,0 hi, 0,0
si, 0,0 st
> %Cpu1 : 8,8 us, 5,6 sy, 0,0 ni, 76,1 id, 0,0 wa, 0,0 hi, 9,5
si, 0,0 st
> %Cpu2 : 8,7 us, 4,0 sy, 0,0 ni, 83,3 id, 0,0 wa, 0,0 hi, 4,0
si, 0,0 st
> %Cpu3 : 5,4 us, 3,4 sy, 0,0 ni, 86,2 id, 0,0 wa, 0,0 hi, 5,0
si, 0,0 st
> %Cpu4 : 7,8 us, 5,1 sy, 0,0 ni, 73,5 id, 6,8 wa, 0,0 hi, 6,8
si, 0,0 st
> %Cpu5 : 1,0 us, 1,0 sy, 0,0 ni, 98,0 id, 0,0 wa, 0,0 hi, 0,0
si, 0,0 st
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 11604 proxy 20 0 11,6g 11g 5232 S 48,4 72,2 72:31.24 squid
>
> Start Time: Wed, 24 Feb 2016 15:38:59 GMT
> Current Time: Wed, 24 Feb 2016 19:18:30 GMT
> Connection information for squid:
> Number of clients accessing cache: 1433
> Number of HTTP requests received: 2532800
> Average HTTP requests per minute since start: 11538.5
> Select loop called: 68763019 times, 0.192 ms avg
> Storage Mem size: 9874500 KB
> Storage Mem capacity: 94.2% used, 5.8% free
>
> I don't think I had a bottleneck on I/O itself, maybe the hash/search
of cache indexes was too much for a single thread?
>
> Best Regards,
>
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