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Date:      Thu, 18 Nov 2004 19:34:11 -0800
From:      Aaron Glenn <aaron.glenn@gmail.com>
To:        Luke <lukem@cse.unsw.edu.au>
Cc:        freebsd-performance@freebsd.org
Subject:   Re: I've ran out of ideas
Message-ID:  <18f6019404111819343f2a7967@mail.gmail.com>
In-Reply-To: <Pine.LNX.4.61.0411191411400.11282@wagner.orchestra.cse.unsw.EDU.AU>
References:  <20041118101026.55888.qmail@web14121.mail.yahoo.com> <20041118105543.10295.qmail@web41208.mail.yahoo.com> <18f6019404111809224fb97c06@mail.gmail.com> <Pine.LNX.4.61.0411191006310.5596@wagner.orchestra.cse.unsw.EDU.AU> <18f6019404111817533b93cbba@mail.gmail.com> <Pine.LNX.4.61.0411191411400.11282@wagner.orchestra.cse.unsw.EDU.AU>

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On Fri, 19 Nov 2004 14:16:51 +1100 (EST), Luke <lukem@cse.unsw.edu.au> wrote:
> Increasing the block size of the disk need not imply that the application
> is issuing larger reads.

Hmm, true.

> I have not suggested that you increase the blocksize further. Please read
> the above points again.
> 
> As Sean pointed out, if your web server supports sendfile then that would
> be a good option.

Indeed I misread your email. I do have some sort optimized thttpd
package that was sent to me off list. I'll try that out in a few
minutes here. I'm also searching for the patch on arch@ that Sean
mentioned.

> Your recent post which showed poor performance from /dev/zero does bring
> the theory that your disk is the bottleneck into question, however you may
> still find it is worth trying the above suggestions.

I neglected to mention those numbers were taken while pushing 45Mbps
out the network. If you add them up you get 93Mbps.

aaron.glenn



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