Date: Mon, 27 Sep 2004 10:16:38 +0200 From: Albert Shih <shih@math.jussieu.fr> To: "Sheets, Jason (OZ CEEDR)" <jason.sheets@hp.com> Cc: freebsd-questions@freebsd.org Subject: Re: Very very slow Message-ID: <20040927081638.GA26247@math.jussieu.fr> In-Reply-To: <2D8BB15C7B5C214F81C32D3A83B32736013D46C8@idbexc01.americas.cpqcorp.net> References: <2D8BB15C7B5C214F81C32D3A83B32736013D46C8@idbexc01.americas.cpqcorp.net>
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Le 24/09/2004 à 13:57:55-0600, Sheets, Jason (OZ CEEDR) a écrit > What type of SCSI controller are you using, was performance always very > slow or has it just started recently, there isn't a lot of information > in your message but it sounds a lot like a hardware issue to me though > it could also be misconfiguration. Adaptex 29320 Ultra 320 SCSI. FreeBSD see a aic7901 driver. Historic : I've install FreeBSD 5.1 "long time ago", everthing work fine. Unfortunality I've need (in fact my users) some software don't work on FreeBSD. Then I've install Linux RedHat 9, and everthing work fine. Now I've opportunity to install a FreeBSD. Then I've install 5.2.1 and the disk is very very slow. I really think the problem come from the disk. Of course I've check : the disk the cable the scsi card any message in log change the scsi card nothing work. The computer is always very slow > > Check /var/log and see if there are any error messages that explain it, > are you certain you aren't experiencing failing hardware? No there are no error messages and the computer work fine.... but like a mono-pro 486 20Mhz, no crash > > Also is CPU utilization abnormally high, try running some disk benchmark > utilities or otherwise measure I/O performance. > No the CPU utilization is normal > Are you running a custom kernel, if so does it perform differently with > the GENERIC kernel? > No I use GENERIC kernel. I've already re-install (after format disk) FreeBSD 5.2.1. And nothing > There are any number of things on the hardware or software side that can > manifest as performance problems. I known but it's very strange because I've two other computer and everthing work fine. Then I've think it's harware problem. I've try to find something, when I've find nothing I've remember the computer work fine under Linux RedHat, then I've re-install Linux RedHat.....and everthing work fine. The speed is correct under Linux. Now I've re-install FreeBSD and I need 32 sec to do cd /usr/src time find . -type f -print > /dev/null and on other computer I just need 0.8 sec to do that. But thanks you for your answer. Regards > > Subject: Very very slow > > > > Hi > > > > I've very strange problem: > > > > On a bi-pro Xeon 2.4 Ghz, 2 Go Ram, 36 SCSI-3 disk. > > > > With Linux RH 9 everything work fine. But with FreeBSD 5.2.1 the > server is > > very very very slow. For example make buildworld use.... ~10 hours > > > > I've another server with approx same hardware (same motherboard but > with > > integrated scsi chipset) on FreeBSD 5.2.1 and everthing work fine. > > > > Anyone have a idea ? > > -- Albert SHIH Universite de Paris 7 (Denis DIDEROT) U.F.R. de Mathematiques. Heure local/Local time: Mon Sep 27 10:00:13 CEST 2004
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