From owner-freebsd-hackers@FreeBSD.ORG Wed Jun 20 22:17:09 2007 Return-Path: X-Original-To: freebsd-hackers@FreeBSD.org Delivered-To: freebsd-hackers@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A7AF016A41F; Wed, 20 Jun 2007 22:17:09 +0000 (UTC) (envelope-from dcross@okcupid.com) Received: from mail0.okcupid.com (mail0.okcupid.com [66.59.66.16]) by mx1.freebsd.org (Postfix) with ESMTP id 53DC913C44C; Wed, 20 Jun 2007 22:17:09 +0000 (UTC) (envelope-from dcross@okcupid.com) Received: from max.okcupid.com (max.okcupid.com [216.254.112.36]) by mail0.okcupid.com (8.13.4/8.13.4) with ESMTP id l5KMHVoW041178; Wed, 20 Jun 2007 18:17:32 -0400 (EDT) (envelope-from dcross@okcupid.com) Received: from max.okcupid.com (localhost [127.0.0.1]) by max.okcupid.com (8.13.6/8.13.6) with ESMTP id l5KMH7w5072442; Wed, 20 Jun 2007 18:17:07 -0400 (EDT) (envelope-from dcross@max.okcupid.com) X-DomainKeys: Sendmail DomainKeys Filter v0.3.3 max.okcupid.com l5KMH7w5072442 Received: from localhost (dcross@localhost) by max.okcupid.com (8.13.6/8.13.6/Submit) with ESMTP id l5KMH7GG072437; Wed, 20 Jun 2007 18:17:07 -0400 (EDT) (envelope-from dcross@max.okcupid.com) Date: Wed, 20 Jun 2007 18:17:07 -0400 (EDT) From: David Cross To: Jeremy Chadwick In-Reply-To: <20070620155139.P48331@max.okcupid.com> Message-ID: <20070620181617.B48331@max.okcupid.com> References: <20070620100737.S56928@max.okcupid.com> <20070620192003.GA72641@eos.sc1.parodius.com> <20070620155139.P48331@max.okcupid.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Mailman-Approved-At: Wed, 20 Jun 2007 22:31:33 +0000 Cc: freebsd-hackers@FreeBSD.org Subject: Re: Very slow sed... X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Jun 2007 22:17:09 -0000 http://downloadmirror.intel.com/13348/ENG/MQ_1687_ReleaseNotes.pdf There it is, the smoking gun. Release 1676... wow.. .that's an obscure one. Thanks you all again! -- David E. Cross On Wed, 20 Jun 2007, David Cross wrote: > Thanks all.. it was the memory. It wasn't "bad".. .memtest (or anythign else > didn't actually fail, the only way I could tell is with a stopwatch and > watching loop times)... but pulling 1/2 of the RAM fixed it.. it doesn't > matter which set was in, as long as both sets its fine. > > -- > David E. Cross > > On Wed, 20 Jun 2007, Jeremy Chadwick wrote: > >> On Wed, Jun 20, 2007 at 10:24:01AM -0400, David Cross wrote: >>> Ok the subject line is misleading.. but I don't know how else to put it. >>> I >>> have a machine on which SOME programs are slow. VERY SLOW. Other >>> programs >>> run just fine. I cannot seem to find the source of the problem. >> >> Two things I can think of: >> >> 1) Memory issues -- memtest86 could help show this kind of problem. Try >> removing memory, and if the problem continues, swapping the pair you >> removed with the pair that's installed. >> >> 2) Disk issues -- reading /usr/bin/sed off the disk where there's a >> soon-to-be-bad block. The disk may be trying to work around it and >> doing a delayed read (inducing EC). This seems less likely to be the >> case than bad memory, but I've seen it happen. >> >> -- >> | Jeremy Chadwick jdc at parodius.com | >> | Parodius Networking http://www.parodius.com/ | >> | UNIX Systems Administrator Mountain View, CA, USA | >> | Making life hard for others since 1977. PGP: 4BD6C0CB | >> >