Re: [squid-users] Squid Scalability

Gavin McCullagh wrote:
> Hi,
>
> On Sat, 04 Apr 2009, Amos Jeffries wrote:
>
>> For now what we need are the hit/miss ratios and user numbers from Squid
>> under peak load, and a few other details to guide comparisons.
>>
>> http://wiki.squid-cache.org/KnowledgeBase/Benchmarks
>> details what we are looking for right now and where to locate it.
>
> Here's our current situation:
>
> --------------------------------------------------------
> Version: 2.6.STABLE18 (Ubuntu Hardy Package)
> OS: 32-Bit Ubuntu GNU/Linux (Hardy)
> CPU: Dual Core Intel(R) Xeon(R) CPU 3050 @ 2.13GHz
> RAM: 8GB
> HDD: 2x SATA disks (150GB, 1TB)
> Cache: 1x 600GB
> Users: ~3000
> RPS: 130
> Hit Ratio: 35-40%
> Byte Hit Ratio: ~13%
>
> Submitted by: Gavin McCullagh, Griffith College Dublin
> With this hit ratio and cache size, substantial cpu time is spent in iowait
> as the disk is overloaded. Reducing the cache to 450GB relieves this, but
> the hit rate drops to more like 10-11%.
> --------------------------------------------------------
>
> I'm going to put a second 1TB disk in to replace the 130GB and have a
> second large cache_dir so this should improve.
>
> Gavin
>

Thank you. Added.
What sort of CPU load does it run under?
And being linux is it running AUFS cache_dir?

Amos

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