Re: Benchmark (Phoronix): FreeBSD 9.0-RC2 vs. Oracle Linux 6.1 Server



Guys,

I have a question about these benchmarks.

Why worry about that if the CURRENT comes with debug enabled by default?

http://joaobarros.blogspot.com/2005/07/freebsd-how-to-turn-off-debug-options.html




On 19/12/2011, at 22:28, Petro Rossini wrote:

Hi all,

just a thought here:

On Tue, Dec 20, 2011 at 12:45 AM, Daniel Kalchev <daniel@xxxxxxxxx> wrote:
As were told, Phoronix used "default" setup, not tuned.
Not really. They created some weird test environment, at least for FreeBSD
-- who knows, possibly for Linux as well.

For example, ZFS is by no means a default file system in FreeBSD. You need
to go trough manual steps, to enable it, to build the pool, filesystems etc.

..

Of course the benchmark setup and procedure is strange but..

it could be improved, I think.

Have a good collection of tuning parameters for "popular cases",
advertised properly so it gets hard "to miss them".

I am a sysadmin and, over the years, I had to run file servers,
database servers, web servers, tomcats...

Well, most of the time I set it up and "it just works" because the
system in question is not maxed out, not even close to it.

But if I want to squeeze the last 20% out of it googling starts, and
here and there I find hints how to tune the OS, the file system, what
scheduler to use etc.

It would be great to have a set of case studies at hand, e.g. under
the /usr/share/examples directory, that describes tweaks to have a
performing postgresql server, or mysql, or apache or a desktop or..

Things I find, for example, in the BSD Magazine.

Maybe benchmarks become more meaningful then..

A general remark for people doing benchmarks for comparison: you need
a well-informed system engineer for the systems you compare. So, if
you compare a Linux system with FreeBSD, have two experienced admins
that know their OS well.

Regards
Peter
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