Re: [squid-users] squid on 32-bit system with PAE and 8GB RAM

Hi,

On Tue, 17 Mar 2009, Amos Jeffries wrote:

>> The server hardware isn't 64-bit so surely I can't run a 64-bit squid
>> build, can I?
>
> Ah, no I believe thats a problem. I kind of assumed that since your
> system could take >2GB of RAM it was 64-bit enabled hardware.

Ah well.

>> It may help that we're allowing large objects into the cache and using
>> "heap lfuda". We plot the average object size with munin and it's about
>> 90KB. Presumably the 10MB per 1GB is strongly a function of average object
>> size.
> http://deathcab.gcd.ie/munin/gcd.ie/watcher.gcd.ie.html#Squid
>
> (sites restricted, but never mind)

Sorry, that's fixed now if you want a look.

> Yes the rule-of-thumb was from past measures mediated by object size
> (averages between 64KB and 128KB). I'm surprised you are seeing such a
> low index size.

It is quite strange -- 90KB is bang in the middle of your range. We're
getting about 5-10% of cache hits served from RAM too so there's definitely
cache_mem in use.

>> The drops in RAM usage are all due to squid restarting. As long as I keep
>> the cache_mem below about 1.8-2GB
>
> Maybe the large-file changes in 2.7 will help then.

That's interesting.

>> Sorry, some of you may be scratching your heads and wondering why one would
>> do something so crazy. I've just got 4GB RAM sitting moreorless idle,
>> a really busy disk and would like to use one to help the other :-)
>
> Aha, in that case maybe. It would be an interesting setup anyhow.

I'll give it some thought, but it sounds like there's no other easy way to
use the spare RAM.

Gavin
Received on Mon Mar 16 2009 - 13:13:04 MDT