From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Grundler Subject: Re: [parisc-linux] ext3 perf patch#4 Date: Sun, 27 Mar 2005 20:48:38 -0700 Message-ID: <20050328034838.GI30963@colo.lackof.org> References: <20050326103540.GA31557@colo.lackof.org> <20050327011849.GD9287@colo.lackof.org> <4246B9D2.7070906@tiscali.be> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: parisc-linux@lists.parisc-linux.org To: Joel Soete Return-Path: In-Reply-To: <4246B9D2.7070906@tiscali.be> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org On Sun, Mar 27, 2005 at 01:49:06PM +0000, Joel Soete wrote: ... > # time rsync -a /Debian-apt/SRC/linux-2.6.12-rc1-pa4-050327 /Sources/CVS-tst > > real 3m34.512s > user 1m0.730s > sys 1m6.440s Joel, thanks for the data! But I don't know what it means. Was the performance bad for that box before? > I prefer simply tar and so: > # cd /Debian-apt/SRC > # time tar -cslpf /chroot/Develop/linux-2.6.12-rc1-pa4.tar2 > linux-2.6.12-rc1-pa4-050327 > > real 0m38.487s > user 0m3.690s > sys 0m18.650s > > a sample iostat too :-) > avg-cpu: %user %nice %sys %iowait %idle > 15.70 0.00 47.00 37.30 0.00 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sda 2.50 0.00 19.60 0 196 > sdb 297.30 5906.40 89.20 59064 892 > sdc 15.10 0.00 7712.80 0 77128 ... That looks fine. > still have to test on a quicker system as the b2k if that could solve the > bug I reproduce on 32bit kernel > (cf patch log message:"... I suspect the real problem is ffz() wants > an unsigned long and was getting garbage in the top half of the > unsigned int. Not confirmed but that's what I suspect.) I probably should have posted that speculation to the mailing list instead of in the commit log...I was quite tired at that point. That could only be true if ext3 perf issue only shows up in 64-bit kernels. I don't recall if anyone posted perf results for 32-bit kernels. thanks, grant _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux