I don't have really good numbers for either, but I can say that I was
really impressed with this firewall yesterday. there were other problems
in the system that caused things to clog up, but a 2.4 AMD950 PC133 ram
system was useable (slow, but useable) with 4000+ processes and a loadave
of > 300
David Lang
On Fri, 1 Dec 2000, Arnaud Installe wrote:
> 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
>
> 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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