Re: [squid-users] High CPU Utilization

> From: Amos Jeffries <squid3_at_treenet.co.nz>
> Date: Tue, 20 Oct 2009 00:14:58 +1300
> To: Ross Kovelman <rkovelman_at_gruskingroup.com>
> Cc: "squid-users_at_squid-cache.org" <squid-users_at_squid-cache.org>
> Subject: Re: [squid-users] High CPU Utilization
>
> Ross Kovelman wrote:
>>> From: Amos Jeffries <squid3_at_treenet.co.nz>
>>> Date: Mon, 19 Oct 2009 18:14:33 +1300
>>> Cc: "squid-users_at_squid-cache.org" <squid-users_at_squid-cache.org>
>>> Subject: Re: [squid-users] High CPU Utilization
>>>
>>> Ross Kovelman wrote:
>>>> Any reason why I would have high CPU utilization, avg around 90%? I did
>>>> build it for PPC although I do have a large dstdomain list which contains
>>>> URL's that are not allowed on the network. It is a Mac G4 dual 1.33. This
>>>> is with no load, or I should say no users on the network.
>>>>
>>>> Thanks
>>>>
>>> Could be a few things:
>>>
>>> * bug 2541 (except latest 3.0 and 3.1 releases)
>>>
>>> * lots of regex patterns
>>>
>>> * garbage collection of the various caches
>>>
>>> * UFS storage system catching up after a period of load
>>>
>>> * memory swapping
>>>
>>> * RAID
>>>
>>> * ... any combination of the above.
>>>
>>> If you have the strace tool available you can look inside Squid and see.
>>> Or a use "squid -k debug" to toggle full debug on/off for a short
>>> period and troll the cache.log afterwards.
>
>
>> Amos,
>>
>> I am not using a raid, although my single drive performance might be slow?
>> Will need to check on the i/o. When I do run squid or make any changes to
>> the config I do get a lot of :
>>
>> 2009/10/16 14:44:08| WARNING: You should probably remove 'xxx.com' from the
>> ACL named 'bad_url'
>> 2009/10/16 14:44:08| WARNING: 'xxx.com' is a subdomain of 'xxx.com'
>> 2009/10/16 14:44:08| WARNING: because of this 'xxx.com' is ignored to keep
>> splay tree searching predictable
>> 2009/10/16 14:44:08| WARNING: You should probably remove 'xxx.com' from the
>> ACL named 'bad_url'
>>
>> Would this by chance do it? There is about 22,000 sites in the bad_url
>> file.
>
> I don't think so. Those warnings are produced by Squid as it prunes them
> out of the ACL by itself.
>
> You can get rid of the duplicates and sub-domains manually to reduce the
> warnings.
>
>
> Amos
> --
> Please be using
> Current Stable Squid 2.7.STABLE7 or 3.0.STABLE19
> Current Beta Squid 3.1.0.14

Amos,

Looked to be a permission issue as Squid would crash and restart.

Thanks