Date: Mon, 10 Apr 2000 13:01:29 +0100 From: "Koster, K.J." <K.J.Koster@kpn.com> To: "'Alexey N. Dokuchaev'" <danfe@inet.ssc.nsu.ru> Cc: freebsd-hackers@FreeBSD.ORG Subject: RE: What are the best gcc optimization options for Pentium 200 M Message-ID: <59063B5B4D98D311BC0D0001FA7E452201313A90@l04.research.kpn.com>
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>
> Can you lead us to any of this HOWTO's? Tnx.
>
Well, many good sys admin books exist, I already mentioned "System
Performance Tuning", it's one of the Nutshell handbooks. I don't know the
author off the top of my head. The mailing list achives will give you plenty
of tips and tricks, although less organised. :)
I that book, the author suggests you first create a benchmark and then try
to determine what resources and optimizations apply. The author states that
a good sysadmin knows exactly what the bottlenecks are in his or her system.
I found that buying that book saved me well over the price of it in time and
hardware.
For me, the benchmark is building a GENERIC kernel, since I do a lot of c++
development. I timed that and found with vmstat and friends that I was using
not even 50% of my cpu. I needed more memory (so I now run twm only) and
optimize disk access (my /usr is now striped across two disks, each with
their own controller) and eliminate disk access (MFS on /tmp, setenv TMPDIR
/tmp).
Currently, my bottleneck is memory bandwidth, and I will fix that with an
Athlon/KX133 combo in a month or so. :-)
Frankly, compiler optimizations are not even mentioned.
Kees Jan
==============================================
You are only young once,
but you can stay immature all your life
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