Re: [squid-users] squid cpu usage ..high??

Hello Joe,

What would you recommend to me? I am having on SCSI 10K 18GB Disk. Ok I am
going for default number of threads 16 per cache_dir.

Which set is preferable?
1. cache_dir aufs 6000 14 256
        cache_dir aufs 6000 14 256
        ( Two partions in this disk each 9GB)
2. cache_dir aufs 12000 16 256
        (One partition)

Regards,
Ronald

> Ron Vachiyer wrote:
>
> >
> >> 50% is probably about right for a 550MHz machine at 40 recs/sec.
> >>
> >> How many drives did you say you had? 35 threads is probably a bit much
> >> for one drive. Actually, the default is great for all but the fastest
> >> drives--so don't alter the default when configuring.
> >
> >
> > Hello,
> >
> > I too am seeing similar CPU usages using async-io. I compiled squid
> > 2.4STABLE2 with 76 threads. I am using 3 cache dirs on 3 18G 10K SCSI
> > discs. What is the recommended per-drive number of threads?
>
> Ummm...What's wrong with the default (as I just said in the quoted
message)?
>
> Seriously, Squid 2.4 has quite clever aufs code that sets the number of
> spawned threads based on the number of cache_dirs. This is a good thing
> and works well--let it do its job. Don't set any number of threads.
>
> (When I was saying for all but the fastest disks, I wasn't thinking
> 10k--that's average for a big Squid box...15k /might/ justify
> configuring additional threads, but probably not.)
>
> So let me reiterate: "Don't alter the default when configuring." Let
> this be our mantra with regard to aufs. Repeat as needed, until you
> have been convinced. ;-)
> --
> Joe Cooper <joe@swelltech.com>
> Affordable Web Caching Proxy Appliances
> http://www.swelltech.com

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Received on Tue Sep 18 2001 - 21:39:22 MDT