From mboxrd@z Thu Jan 1 00:00:00 1970 From: jp Subject: Re: More Slowdown Date: Mon, 14 Nov 2005 20:53:42 +0100 Message-ID: <4378EB46.1050509@free.fr> References: <200511111359.39715.jgilmore@glycou.com> <43758E00.4000601@namesys.com> <200511120906.39109.jgilmore@glycou.com> <1131997263.10816.56.camel@teratron.lan.etheus.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <1131997263.10816.56.camel@teratron.lan.etheus.net> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Craig Shelley Cc: reiserfs-list@namesys.com Hi, For me reiser4 is working perfectly on Vanilla 2.6.14.2, all the testers who I sent the new kernel to are reporting excellent performance and reliability. Could you explain a bit further the way I could reproduce this ? Thanks JP Craig Shelley wrote: >On Sat, 2005-11-12 at 09:06 +0000, John Gilmore wrote: > > >>Oh, BTW. "The slowdown" as I called it is still there. I guess I spoke to >>soon. The specific symptom is that the effected process locks for a time, >>usually just a second or two, but sometimes a minute or two and and at least >>once for many many minutes. I think that the crash (soft lockup) that I >>reported earlier is related as well. And it sounds like the comment that >>rvalles had about lockups with mmaped files, except that it doesn't lock up >>permanently. Just for a second or three usually. >> >> >> > >Hi, > >I am sorry to say that I am having the same slowdown issue with Reiser4 >and kernel 2.6.14.2. It seems that my problem is not related to the I/O >scheduler algorithm as I have tried both cfq and anticipatory. > >The I/O activity seems to come in long bursts lasting up to 15 seconds, >and is unpredictable. The system almost grinds to a halt while the burst >of I/O is taking place, which can be quite annoying while typing. >There are no warnings in dmesg/syslog and the filesystem is clean. > >Sometimes the burst of I/O activity occurs in a different form, with >short bursts every second, lasting about 10 seconds. Approx 30% duty >cycle. When a burst occurs in this form, it tends not to lock processes >as much. > >The general sound of the drive when a burst is in progress is that of >heavy head movement, as if the drive is repeatedly seeking between two >or three locations. > >Also, a thing which I noticed a while back, and may not be related in >any way to Reiser4.. When I re-size the columns in Evolution Mail, I get >continuous hard disk activity during the re-size. This hard disk >activity stops either when I release the mouse or hold it still with the >button down. Just wondering if anyone else gets the same thing. > >Regards, > >