From owner-freebsd-current Tue Oct 29 10:13:30 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D988837B406; Tue, 29 Oct 2002 10:13:28 -0800 (PST) Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4958C43E42; Tue, 29 Oct 2002 10:13:27 -0800 (PST) (envelope-from robert@fledge.watson.org) Received: from fledge.watson.org (fledge.pr.watson.org [192.0.2.3]) by fledge.watson.org (8.12.4/8.12.4) with SMTP id g9TICpOo012889; Tue, 29 Oct 2002 13:12:52 -0500 (EST) (envelope-from robert@fledge.watson.org) Date: Tue, 29 Oct 2002 13:12:51 -0500 (EST) From: Robert Watson X-Sender: robert@fledge.watson.org To: John De Boskey Cc: Current List Subject: Re: Poor 5.0/nfs performance In-Reply-To: <20021029071325.GA7231@BSDWins.Com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hmm. I haven't experienced this with my 5.0 boxes not running WITNESS/INVARIANTS/etc, but I'm updating a box to give it a try. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Network Associates Laboratories On Tue, 29 Oct 2002, John De Boskey wrote: > Hi, > > I have a 5.0 system from 10/27. In an attempt to improve > performance I commented out the INVARIANTS/WITNESS options: > > #options INVARIANTS #Enable calls of extra sanity checking > #options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS > #options WITNESS #Enable checks to detect deadlocks and cycles > #options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed > > and then started a make release. > > Since doing this, the machine has become almost totally > unresponsive. Command execution is measured in hours. A page > from top which finally came up shows some very high load > averages: > > last pid: 1892; load averages: 7.14, 6.00, 5.67 up 1+10:49:19 23:50:26 > 34 processes: 1 running, 33 sleeping > CPU states: 0.0% user, 0.0% nice, 78.5% system, 0.8% interrupt, 20.7% idle > Mem: 69M Active, 909M Inact, 214M Wired, 51M Cache, 112M Buf, 255M Free > Swap: 4096M Total, 36K Used, 4096M Free > > PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND > 99689 root -8 5 2928K 2236K biowr 0:59 0.00% 0.00% cvs > > The cvs is being executed by 'make release' updating the chroot area. > The repo lives in /home/ncvs which is an nfs mount of a 4.7 system. A > kernel with the above options does not exibit this behaviour. > > When I killed the cvs process, the machine returns to normal. > > I guess my basic question is: Are the INVARIANTS and WITNESS > options required at this point? > > Thanks, > John > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message