X-Spam-Check-By: sourceware.org Message-ID: Date: Mon, 13 Mar 2006 10:11:56 -0500 From: "Brett Serkez" To: cygwin@cygwin.com Subject: Re: cygrunsrv.exe Processor Util 100% on Windows Server In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline References: X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id k2DFC9Tg027866 > Hi- we have been using openssh on cygwin on win2k server for quite some time, > with hundreds of user sessions (we use almost exclusively for file transfer > [sftp]). Recently, on occasion, we notice in Task Manager that cygrunsrv.exe > processor utilization is at 100%. During this time, csrss.exe also runs at > about 25%. And, this process cannot be stopped from Task Manager, though > restarting openssh will stop cygrunsrv.exe and restore csrss.exe to normal > utilization (so, it appears that when cygrunsrv is running 100%, it's > definitely keeping csrss busy with something). I have seen a similar posting > regarding someone having this trouble while playing a game or using a > sysinternals tool, but, we are doing neither. > > The overload is not related to usage (either upload or download), it doesn't > happen even when we have multiple concurrent sessions running. > > We are not running many applications on the Win2K server. I have previously posted on this topic, having the same issue. I found there was a setting in sshd that inhibited an extra fork (for extra security) and also switching from bash to tcsh resolved the issue. I can search for this previous posting if you cannot locate it. Interestingly I have found that this *seems* to only happen on Win2K, but I only have this setup on a limited number of WinXP systems (without the above workarounds). Brett -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/