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Date:      Wed, 16 Oct 2002 18:07:28 +0200
From:      Daniel Rock <D.Rock@t-online.de>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        obrien@freebsd.org, Alex Zepeda <zipzippy@sonic.net>, current@freebsd.org
Subject:   Re: Perl 5.8 broken in current
Message-ID:  <3DAD8EC0.5070500@t-online.de>
References:  <3DAB2B21.5050205@t-online.de> <20021014204407.GA13015@blarf.homeip.net> <20021015000045.GA46774@dragon.nuxi.com> <3DAC50F0.3060408@t-online.de> <20021015175104.GA77964@xor.obsecurity.org> <3DACAED7.4020400@t-online.de> <20021016031242.GA92595@xor.obsecurity.org>

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Kris Kennaway schrieb:

>On Wed, Oct 16, 2002 at 02:12:07AM +0200, Daniel Rock wrote:
>
>  
>
>>gprof "thinks" the runtime is only 8 seconds, while in reality it takes 
>>more than 2 minutes to complete the test. A small excerpt from gprof output
>>    
>>
>
>Are you running a kernel with WITNESS enabled?  This can really chew
>up kernel CPU time if you're doing a lot of syscalls.
>
>  
>
No, WITNESS not enabled.

System calls should not be the problem. If I truss the process. Syscalls 
don't seem to be the problem. Most of the syscalls are break() syscalls, 
but no more than 10-20 per second. If I try to reduce the calling 
frequency (ln -sf ">>>>>" /etc/malloc.conf), runtime doesn't change 
significantly

Daniel



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