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Date:      Sat, 10 May 2008 09:10:37 +0200 (CEST)
From:      Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To:        Matthew Seaman <m.seaman@infracaninophile.co.uk>
Cc:        DAve <dave.list@pixelhammer.com>, 'User Questions' <freebsd-questions@freebsd.org>
Subject:   Re: FBSD 6.2 Xeon 2.4ghz CPU and high load
Message-ID:  <20080510090439.U58698@wojtek.tensor.gdynia.pl>
In-Reply-To: <4824CEE7.6070605@infracaninophile.co.uk>
References:  <482473B7.7070707@pixelhammer.com> <48248AC9.5060507@infracaninophile.co.uk> <20080509202941.J53368@wojtek.tensor.gdynia.pl> <4824CEE7.6070605@infracaninophile.co.uk>

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>> and what most unix users do.
>
> It is what a lot of unix users have done historically, but now that there is

and still most do.

> It's not a "Unix way" versus "Other OS Way" thing -- its a response to the 
> change
> in direction hardware development has taken over the past several years. 
> Chip

on multichip hardware you can do many different things too - even faster 
as it's spread over cores.

> and
> how much cache RAM there is on each chip.  4 cores and 8MB is just the latest
> step in that evolutionary arms race.

that's much better than "more gigaherts" way.

any unix should support it good - with any kind of load.

today i see performance improvements are mostly towards synthetic 
benchmarks like running 8 threads of mysql server.

it looks cool on paper, but we need good performance when running 
concurrently many different things.

if one plan to use single one program - why unix at all?


as i've tested 7.0 once, it was on same computer noticably slower under 
high load of different programs.

now i read 6.* is slower than 4.* (i never user 4.*)

isn't it something wrong with it?!

> It depends very much on the application load you have to support and the sort
> of hardware you have available.  For the sort of multicore chips that are all 
> the
> rage nowadays, I'd go with 7.0 every time, even running single threaded
> applications.

did you actually made a comparision with 6.*? not with "paper benchmarks" 
but just run 100 different things and check how responsive machine is.



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