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Date:      Tue, 16 Feb 1999 10:27:36 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Thomas van Gulick <melkor@Cal040031.student.utwente.nl>, freebsd-questions@FreeBSD.ORG
Subject:   Re: FreeBSD performance
Message-ID:  <19990216102736.L2207@lemis.com>
In-Reply-To: <19990215144708.A34665@utumno.student.utwente.nl>; from Thomas van Gulick on Mon, Feb 15, 1999 at 02:47:08PM %2B0100
References:  <19990215144708.A34665@utumno.student.utwente.nl>

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On Monday, 15 February 1999 at 14:47:08 +0100, Thomas van Gulick wrote:
> I'm currently evaluating FreeBSD as a replacement of Linux as my primary
> development OS. I'm using a Dual PentiumPro system with 192 MB for this.
>
> However, FreeBSD feels a bit 'sluggish' compared to Linux. A bit slower on
> every task so it seems.

Hmm.  I've heard this before.  No details, just a feeling.  I've also
experienced something similar when comparing System V and BSD: System
V appears much slower.  It's not borne out in performance testing,
however.  In the case of System V, I think it's because there's an
almost imperceptible difference in the response at the keyboard, which
gives you the feeling that it's slow.  I don't know whether the
impression you get with Linux and BSD has a similar background.

> Are there any performance tweaks to increase my system's operating
> speed?

Yes.

> I'm currently using the 4-CURRENT, async io and edited the kernel
> config file for as much speed as possible.

If you're using 4.0-CURRENT, you should subscribe to FreeBSD-current.
For a change, though, I won't tell you to ask your question there,
since it's not really related to -CURRENT.

Oh, I didn't tell you more about the performance tweaks, did I?
That's deliberate: first we need to know if any bottleneck exists, and
if so, where.  Then we can investigate tuning.

So: where's the problem?

Greg
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