From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keld =?iso-8859-1?Q?J=F8rn?= Simonsen Subject: Re: sun x4500 soft lockup during raid creation Date: Fri, 30 Jan 2009 23:28:42 +0100 Message-ID: <20090130222842.GA9733@rap.rap.dk> References: <1233174633.7008.34.camel@hazard2.francoudi.com> <20090128223330.GA14409@sillage.bis.pasteur.fr> <20090128230852.GA8495@francoudi.com> <49831CBB.8010609@tmr.com> <1233344286.14088.36.camel@hazard2.francoudi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Return-path: Content-Disposition: inline In-Reply-To: <1233344286.14088.36.camel@hazard2.francoudi.com> Sender: linux-raid-owner@vger.kernel.org To: Vladimir Ivashchenko Cc: Bill Davidsen , Tru Huynh , linux-raid@vger.kernel.org List-Id: linux-raid.ids On Fri, Jan 30, 2009 at 09:38:06PM +0200, Vladimir Ivashchenko wrote: > On Fri, 2009-01-30 at 10:28 -0500, Bill Davidsen wrote: > > > > I changed the kernel to 2.6.27.12-78.2.8.fc9.i686 and so far it is stable. > > > > > > x64 will be the next step. i686 is what our guys install by default, I didn't bother to reinstall it. > > > > > > > In spite of the theoretical benefits of 64 bit, I find that the > > advantages are "measurable but not noticeable" for most things. The lack > > of 64 bit versions of some applications was a problem for me, but may > > not be for you. I did find that even building from source not all > > applications worked right, or worked at all, or in some cases compiled. :-( > > More or less this is our experience also, but this box will only be used > as a file-server. > > Does anybody know if software RAID benefits when being run in 64-bit ? I think it may. IO buffer copying may be twice as fast. Some statistics on IO, including network traffic can be measured when it goes beyound about 100 Mbit/s - tehere are some counters that would overflow 32 bit. best regards keld