[squid-users] Sometimes Squid goes to 99% CPU use

Amos Jeffries squid3 at treenet.co.nz
Sat Jul 2 03:50:56 UTC 2016


On 1/07/2016 10:18 p.m., C. L. Martinez wrote:
> On Fri  1.Jul'16 at 21:42:23 +1200, Amos Jeffries wrote:
>> On 1/07/2016 8:39 p.m., C. L. Martinez wrote:
>>> Hi all,
>>>
>>>  I am seeing an abnormal behavior in my squid host (OpenBSD). From time to time, CPU goes to 99%:
>>>
>>> load averages:  2.20,  2.14,  2.09  
>>> 33 processes: 1 running, 31 idle, 1 on processor
>>> CPU states: 79.2% user,  0.0% nice,  0.1% system,  0.0% interrupt, 20.6% idle
>>> Memory: Real: 91M/263M act/tot Free: 1711M Cache: 118M Swap: 0K/2055M
>>>
>>>   PID USERNAME PRI NICE  SIZE   RES STATE     WAIT      TIME    CPU COMMAND
>>> 13337 _squid    64    0   72M   71M run       -       105:58 99.02% squid
>>>
>>>  This only occurs with https sites ... maybe is a missconfiguration with ssl-bump options? Actually my ssl-bump config is:
>>>
>>> acl step1 at_step SslBump1
>>> ssl_bump peek step1
>>> ssl_bump bump !NoSSLIntercept
>>> ssl_bump splice all
>>>
>>>  Exists some "safer" ssl-bump config to avoid this behavior?
>>
>> What exact version of Squid are you using?
>>
>> Amos
>>
> I am using squid version installed from M:tier packages for OpenBSD:
> 
> Squid Cache: Version 3.5.17

Okay, that version does not havethe bugs I was suspecting.

If its just occasional and reduces in a reasonable timeframe then I
would not worry much about it. Is a puzzle though.

Amos



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