Re: Res: [squid-users] squid 3.2.0.5 smp scaling issues

From: <david_at_lang.hm>
Date: Mon, 25 Apr 2011 21:58:19 -0700 (PDT)

On Mon, 25 Apr 2011, Alex Rousskov wrote:

> On 04/25/2011 06:14 PM, david_at_lang.hm wrote:
>>>> if that regains the speed and/or scalability it would point fingers
>>>> fairly conclusively at the DNS components.
>>>>
>>>> this is the only think that I can think of that should be shared between
>>>> multiple workers processing ACLs
>>>
>>> but it is _not_ currently shared from Squid point of view.
>>
>> Ok, I was assuming from the description of things that there would be
>> one DNS process that all the workers would be accessing. from the way
>> it's described in the documentation it sounds as if it's already a
>> separate process
>
> I would like to fix that documentation, but I cannot find what phrase
> led you to the above conclusion. The SmpScale wiki page says:
>
>> Currently, Squid workers do not share and do not synchronize other
>> resources or services, including:
>>
>> * DNS caches (ipcache and fqdncache);
>
> So that seems to be correct and clear. Which documentation are you
> referring to?

ahh, I missed that, I was going by the description of the config options
that configure and disable the DNS cache (they don't say anything about
the SMP mode, but I read them to imply that the squid-internal DNS cache
was a separate thread/proccess)

David Lang
Received on Tue Apr 26 2011 - 04:58:31 MDT

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