Re: aio_read implementaion in Squid

Hello joe,

Another doubt. Consider my config. PIII 650 MHz. 1 18GB SCSI (2 partitions).
256x3GB Memory.
cache_dir looks like,
cache_dir aufs /cache0 6000 14 256
cache_dir aufs /cache1 6000 14 256

I am getting queue congestion and DISK I/O OVERLOADING errors in cache.log
even for 120 req/sec. Do you say only this much can achive in linux with
this config? If so, what are the major changes we have to be for in Squid
filesystem side.
As I already said, I am looking for very high performance Squid.

One more thing, During this benchmark I have used very reliable 2.2.19 and
reiserfs. So I am suspecting this.

Regards,
Venkatesh

> Adrian has implemented an aio interface to COSS.
>
> Might be worth a look if you need pointers for how to proceed (though
> COSS is significantly different than UFS).
>
> I doubt you'll find it provides any higher performance than the current
> AUFS implementation (but then again, AUFS only works on Linux and
Solaris).
>
> Venkatesh wrote:
>
> > Hi All,
> >
> > What are the issues if we go for aio_read() instead of read() with
> > poll() other than posix compatibility?
> >
> > Do you all agree with this kind of implementaion for Squid?
> >
> > Any comments?
> >
> > Venkatesh
>
>
> --
> Joe Cooper <joe@swelltech.com>
> Affordable Web Caching Proxy Appliances
> http://www.swelltech.com

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Received on Wed Sep 12 2001 - 00:22:56 MDT