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From:	"John R Larsen" <john AT larsen-family DOT us>
To:	cygwin AT cygwin DOT com, Thomas Braun <tb AT software-braun DOT de>
Date:	Thu, 04 May 2006 10:14:46 -0400
MIME-Version:	1.0
Subject:	Re: Cygrunsrv.exe 100% processor load
Reply-To:	john AT larsen-family DOT us
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On 4 May 2006 at 10:18, Thomas Braun wrote:

Date sent:	Thu, 4 May 2006 10:18:48 +0200
From:	Thomas Braun <tb AT software-braun DOT de>
Send reply to:	Thomas Braun <tb AT software-braun DOT de>
To:	cygwin AT cygwin DOT com
Subject:	Cygrunsrv.exe 100% processor load


Hi,

I'm running cygwin on a W2K server with all the current service packs
and patches, and I'm experiencing intermittent CPU hogging by
cygrunsrv.exe.

Restarting the sshd service always clears the situation, but this is a
real PITA as far as I'm concerned ;-)

I'm not sure *what* exactly triggers this, but one way to reproduce
this is to use process explorer from www.sysinternals.com and try to
show the process properties for cygrunsrv.exe.

This does not only bring process explorer to a halt, but also raises
the CPU load from cygrunsrv.exe to between 60 and 100%

Weird enough, as soon as sshd is restarted, process explorer comes
back to life again ;-)

I know this issue has been discussed here recently:

http://sourceware.org/ml/cygwin/2006-04/msg00240.html
http://sourceware.org/ml/cygwin/2006-03/msg00337.html

...but as far as I can see there is no real solution.

Thanks & regards
Thomas Braun


I've noticed the same behavior on my Windows 2000 boxes when using the Windows Update site.  
Windows Update hangs during the installation phase.  I have two instances of cygrunsrv.exe running; one 
for cron and one for sshd.  If I go in and kill all the cygwin related processes then the installation phase 
resumes and completes normally.  Some months ago I also noticed that cygrunsrv.exe processes would 
go to 100% when iTunes was installed.  Removing iTunes solved that problem.

John
_______________________________________________________
John R Larsen <john AT larsen-family DOT us>
http://larsen-family.us

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