From owner-cvs-all Tue Aug 21 15:54:54 2001 Delivered-To: cvs-all@freebsd.org Received: from earth.backplane.com (earth-nat-cw.backplane.com [208.161.114.67]) by hub.freebsd.org (Postfix) with ESMTP id 9844E37B405; Tue, 21 Aug 2001 15:54:48 -0700 (PDT) (envelope-from dillon@earth.backplane.com) Received: (from dillon@localhost) by earth.backplane.com (8.11.4/8.11.2) id f7LMsFQ68740; Tue, 21 Aug 2001 15:54:15 -0700 (PDT) (envelope-from dillon) Date: Tue, 21 Aug 2001 15:54:15 -0700 (PDT) From: Matt Dillon Message-Id: <200108212254.f7LMsFQ68740@earth.backplane.com> To: Dag-Erling Smorgrav Cc: Alfred Perlstein , John Baldwin , cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern kern_condvar.c kern_synch.c src/sys/sys proc.h References: <200108211842.f7LIgkp03186@freefall.freebsd.org> <20010821134601.J81307@elvis.mu.org> Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG :Dag-Erling Smorgrav writes: :> Interesting Fact Of The Day: I just noticed that the syncer process is :> eating up heaps of CPU : :8% averaged over the machine's uptime, in fact: : :root@des /sys/kern# uptime :12:31AM up 5 days, 10:27, 7 users, load averages: 1.94, 1.57, 1.69 :root@des /sys/kern# ps -axlp 5 : UID PID PPID CPU PRI NI VSZ RSS WCHAN STAT TT TIME COMMAND : 0 5 0 142 20 0 0 0 syncer DL ?? 629:49.14 (syncer) : :DES :-- :Dag-Erling Smorgrav - des@ofug.org vm_mtx could not be responsible for a constant 8% cpu utilization by the syncer on an idle machine. Something is seriously whacked. I might be able to diagnose it with root access (and a kernel.debug) to the machine in question, or if you have a way of reproducing it I can try to reproduce it on one of my boxes. The syncer is not typically fragile. The only thing I can think of that could cause something like this to happen is if 'rushjob' (aka speedup_syncer()) is being called continuously. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message