Re: [squid-users] Optimizing squid

Heiler Bemerguy Wed, 24 Feb 2016 12:40:59 -0800


Not to mention only 10GB of cache is almost useless for us... lol

But I still think cpu is cpu and i/o is i/o. "WAIT" fields on both TOPand VMSTAT shows almost always a ZERO

Why would it show a process using cpu while actually it's waiting for aI/O.. ?


Best Regards

--
Heiler Bemerguy - (91) 98151-4894
Assessor Técnico - CINBESA (91) 3184-1751


Em 24/02/2016 17:13, Yuri Voinov escreveu:

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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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Re: [squid-users] Optimizing squid

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