Messages in this thread | | | Date | Mon, 4 Aug 2003 23:26:54 -0700 | From | Andrew Morton <> | Subject | Re: Interactive Usage of 2.6.0.test1 worse than 2.4.21 |
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Martin Konold <martin.konold@erfrakon.de> wrote: > > Hi, > > when using 2.6.0.test1 on a high end laptop (P-IV 2.2 GHz, 1GB RAM) I notice > very significant slowdown in interactive usage compared to 2.4.21. > > The difference is most easily seen when switching folders in kmail. While > 2.4.21 is instantaneous 2.6.0.test1 shows the clock for about 2-3 seconds. > > I am using maildir folders on reiserfs.
There is a bug in old kmail versions wherein they do silly things if the filesystem alleges that its optimum I/O size is much larger than 4k.
2.6's reiserfs tell applications that its optimum IO size is 128k, and the bug bites.
Try mounting your reiserfs filesystems with the "nolargeio" option.
A `mount -o remount,nolargeio' will probably work too.
Please test that, send a report, and if it fixes it, upgrade your kmail.
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