Date: Wed, 5 Apr 2000 18:28:27 -0600 From: "Kenneth D. Merry" <ken@kdm.org> To: Andrew Heybey <ath@niksun.com> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: newfs on IBM disks slower than Seagate disks? Message-ID: <20000405182827.A6960@panzer.kdm.org> In-Reply-To: <200004051218.IAA09904@stiegl.niksun.com>; from ath@niksun.com on Wed, Apr 05, 2000 at 08:18:33AM -0400 References: <200004051218.IAA09904@stiegl.niksun.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Apr 05, 2000 at 08:18:33 -0400, Andrew Heybey wrote: > Newfs of a ~16GB partition (as performed by sysinstall, so the newfs > arguments are the same) is *much* slower on IBM 18GB 10K RPM LVD disks > versus similar Seagates. Systems are otherwise identical (same > controller (onboard Adaptec AIC7896), same motherboard, same amount of > RAM). Once newfs'd, bonnie and iozone give similar performance for > the two disks. Rawio also gives similar numbers for the two. > > Running 3.2-RELEASE. > > IBM disks are DMVS18V. > Seagates are Cheetah ST318203LW. > > Why would this be the case? See if write caching is enabled (WCE == 1) in mode page 8. (See the camcontrol(8) man page for how to display mode pages.) Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20000405182827.A6960>