Messages in this thread | | | Date | Tue, 9 Jul 2002 00:50:25 +0200 | From | Lukas Hejtmanek <> | Subject | Re: Terrible VM in 2.4.11+? |
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Yes, I know a few people that reports it works well for them. How ever for me and some other do not. System is redhat 7.2, ASUS A7V MB, /dev/hda is on promise controller. Following helps a lot:
while true; do sync; sleep 3; done
How did you modify the params of bdflush? I do not want to suspend i/o buffers nor disk cache..
Another thing to notice, the X server has almost every time some pages swaped to the swap space on /dev/hda. When bdflushd is flushing buffers X server stops as has no access to the swap area during i/o lock.
On Mon, Jul 08, 2002 at 05:37:02PM -0500, Austin Gonyou wrote: > I do things like this regularly, and have been using kernels 2.4.10+ on > many types of boxen, but have yet to see this behavior. I've done this > same type of test with 16k blocks up to 10M, and not had this problem I > usually do test with regard to I/O on SCSI, but have tested on IDE, > since we use many IDE systems for developers. I found though, that using > something like LVM, and overwhelming it, causes bdflush to go crazy. I > can hit the wall you refer to then.When bdflushd is too busy...it does > in fact seem to *lock* the system, but of course..it's just bdflush > doing it's thing. If I modify the bdflush params..this causes things to > work just fine, at least, useable.
-- Lukáš Hejtmánek - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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