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Date: Fri, 1 Dec 2000 10:47:45 +0100
From: Arnaud Installe <ainstalle@filepool.com>
To: David Lang <david.lang@digitalinsight.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: high load & poor interactivity on fast thread creation
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In-Reply-To: <Pine.LNX.4.21.0011301459250.17363-100000@dlang.diginsite.com>; from david.lang@digitalinsight.com on Thu, Nov 30, 2000 at 03:00:10PM -0800
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On Thu, Nov 30, 2000 at 03:00:10PM -0800, David Lang wrote:
> try the 2.4 test kernels. I had a situation of poor performance with lots
> of processes and saw a dramatic improvement with the 2.4 kernel.

So what load average should I expect Linux versions 2.2 and 2.4 to perform
well under ?  I'm wondering what would be the best way to solve this
problem: limit the number of processes created during a certain time span;
check if the load average isn't too high before creating a new thread (and
go to sleep if it isn't); or something else ?

Thanks very much BTW !  The list has always been very helpful.  :-)

								Arnaud

> > When creating a lot of Java threads per second linux slows down to a
> > crawl.  I don't think this happens on NT, probably because NT doesn't
> > create new threads as fast as Linux does.
> > 
> > Is there a way (setting ?) to solve this problem ?  Rate-limit the number
> > of threads created ?  The problem occurred on linux 2.2, IBM Java 1.1.8.

-- 
Arnaud Installe						<ainstalle@filepool.com>

Man has never reconciled himself to the ten commandments.
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