From owner-freebsd-hackers@FreeBSD.ORG Wed Jun 20 20:55:36 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 CA0F416A469 for ; Wed, 20 Jun 2007 20:55:36 +0000 (UTC) (envelope-from SRS0=CTn6Op=LU=arthurchang.com=contact@yourhostingaccount.com) Received: from mailout20.yourhostingaccount.com (mailout20.yourhostingaccount.com [65.254.253.162]) by mx1.freebsd.org (Postfix) with ESMTP id 861A213C45B for ; Wed, 20 Jun 2007 20:55:36 +0000 (UTC) (envelope-from SRS0=CTn6Op=LU=arthurchang.com=contact@yourhostingaccount.com) Received: from mailscan14.yourhostingaccount.com ([10.1.15.14] helo=mailscan14.yourhostingaccount.com) by mailout20.yourhostingaccount.com with esmtp (Exim) id 1I16js-0000hF-C3 for freebsd-hackers@freebsd.org; Wed, 20 Jun 2007 16:25:16 -0400 Received: from webmail11.yourhostingaccount.com ([10.1.16.11] ident=exim) by mailscan14.yourhostingaccount.com with spamscanlookuphost (Exim) id 1I16jr-00082U-WD for freebsd-hackers@freebsd.org; Wed, 20 Jun 2007 16:25:16 -0400 Received: from webmail11.yourhostingaccount.com ([10.1.16.11] helo=webmail11.yourhostingaccount.com) by mailscan14.yourhostingaccount.com with esmtp (Exim) id 1I16jp-00081i-CY; Wed, 20 Jun 2007 16:25:13 -0400 Received: from nobody by webmail11.yourhostingaccount.com with local (Exim) id 1I16jg-0003kn-6w; Wed, 20 Jun 2007 16:25:04 -0400 Received: from 12.22.49.94 (SquirrelMail authenticated user arthurchang@pop.powweb.com) by email.powweb.com with HTTP; Wed, 20 Jun 2007 13:25:04 -0700 (PDT) Message-ID: <24128.12.22.49.94.1182371104.squirrel@email.powweb.com> In-Reply-To: <20070620155139.P48331@max.okcupid.com> References: <20070620100737.S56928@max.okcupid.com> <20070620192003.GA72641@eos.sc1.parodius.com> <20070620155139.P48331@max.okcupid.com> Date: Wed, 20 Jun 2007 13:25:04 -0700 (PDT) From: "Arthur Chang" To: "David Cross" User-Agent: SquirrelMail/1.4.9a MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal Sender: "Arthur Chang" X-Mailman-Approved-At: Wed, 20 Jun 2007 21:09:53 +0000 Cc: freebsd-hackers@freebsd.org, Jeremy Chadwick Subject: Re: Very slow sed... X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: contact@arthurchang.com 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 20:55:36 -0000 It might be an issue with the motherboard memory slots then. -Arthur Chang > 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 >> | >> > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >