From mboxrd@z Thu Jan 1 00:00:00 1970 From: Craig Shelley Subject: Re: More Slowdown Date: Mon, 14 Nov 2005 19:41:03 +0000 Message-ID: <1131997263.10816.56.camel@teratron.lan.etheus.net> References: <200511111359.39715.jgilmore@glycou.com> <43758E00.4000601@namesys.com> <200511120906.39109.jgilmore@glycou.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-HTc83DY8XwPdOcfBFH4F" Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <200511120906.39109.jgilmore@glycou.com> List-Id: To: reiserfs-list@namesys.com --=-HTc83DY8XwPdOcfBFH4F Content-Type: text/plain Content-Transfer-Encoding: quoted-printable 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= =20 > soon. The specific symptom is that the effected process locks for a time,= =20 > usually just a second or two, but sometimes a minute or two and and at le= ast=20 > once for many many minutes. I think that the crash (soft lockup) that I=20 > reported earlier is related as well. And it sounds like the comment that=20 > rvalles had about lockups with mmaped files, except that it doesn't lock = up=20 > permanently. Just for a second or three usually. >=20 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, --=20 Craig Shelley EMail: craig@microtron.org.uk Jabber: shell@jabber.earth.li --=-HTc83DY8XwPdOcfBFH4F Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQBDeOhP5OI9vmOoVqERAqfbAJ0f13L7OM8ZvoWEsnGVLdukXHYxuwCeK5Gp jA2lWVg08+ZVEXCTdCVPaZM= =1rR5 -----END PGP SIGNATURE----- --=-HTc83DY8XwPdOcfBFH4F--