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Date:      Fri, 8 Mar 2002 08:31:02 +0200
From:      Dimitar Peikov <mitko@rila.bg>
To:        Mike Silbersack <silby@silby.com>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Swapping performance
Message-ID:  <20020308083102.3d350933.mitko@rila.bg>
In-Reply-To: <20020307113735.M2778-100000@patrocles.silby.com>
References:  <05fe01c1c5e6$6a02e890$2400010a@eight> <20020307113735.M2778-100000@patrocles.silby.com>

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On Thu, 7 Mar 2002 11:41:28 +0000 (GMT)
Mike Silbersack <silby@silby.com> wrote:

> 
> On Thu, 7 Mar 2002, cjp wrote:
> 
> > In order to handle the kruft that occurs, there is the out of memory
> > killer, oom_killer.
> > Which merrily goes through the list of processes, killing off the low
> > priority processes
> > until enough memory is free to satisfy what was most recently used. 
> > It's the loan shark
> > repayment program, with OOMKiller performing the function of the
> > deliquency reminder.
> 
> FreeBSD overcommits and has a OOMKiller too.  You just haven't noticed it
> because it's not triggered until you're out of swap space.
> 
> The one thing that _does_ strike me as odd in this comparison is that
> Dimitar is using 2.4.17.  If that's 2.4.17, I'm surprised that it's
> working ok, as everyone on the linux-kernel list seems to be applying
> either the -AA or -rmap patches.  Of course, if that's SUSE's 2.4.17, I
> assume that the -AA patches are already applied.
> 

Well, this SuSE is upgraded 7.1 installation, with no SuSE kernel downloaded
from kernel.org).

> In any case, we can't make any useful comparisons until Dimitar posts the
> source to his test program.
> 
> Dimitar, post the source for the test program!
> 
> Mike "Silby" Silbersack
> 
> 
> 


-- 
Dimitar Peikov
Programmer Analyst
Globalization Group
"We Build e-Business"  

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