Messages in this thread | | | From | James Cleverdon <> | Subject | Re: Kswapd madness in 2.4 kernels | Date | Tue, 5 Nov 2002 14:13:00 -0800 |
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Status report:
Due to dependencies, I didn't try the two recommended patches alone. I ran Andrea's 2.4.20-pre10aa1 kernel on the test load for one week. Low memory was conserved and kswapd never went out of control. Presumably, 05_vm_16_active_free_zone_bhs-1 did the job for buffers, and the inode patch continued to work.
Are there any plans on getting these into 2.4.21?
On Thursday 24 October 2002 09:32 pm, Andrew Morton wrote: > James Cleverdon wrote: > > Andrea_Archangeli-inode_highmem_imbalance.patch Type: text/x-diff > > That's in -aa kernels, is correct and is needed. > > > Andrew_Morton-2.4_VM_sucks._Again.patch Type: text/x-diff > > hmm. Someone seems to have renamed my nuke-buffers patch ;) > > My main concern is that this was a real quickie; it does a very > aggressive takedown of buffer_heads. Andrea's kernels contain a > patch which takes a very different approach. See > http://www.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.20pre >8aa2/05_vm_16_active_free_zone_bhs-1 > > I don't think anyone has tried that patch in isolation though... > > If nuke-buffers passes testing and doesn't impact performance then > fine. A more cautious approach would be to use the active_free_zone_bhs > patch. If that proves inadequate then add in the "read" part of > nuke-buffers. That means dropping the fs/buffer.c part. > -
On Friday 25 October 2002 09:57 am, Rik van Riel wrote: > On Thu, 24 Oct 2002, James Cleverdon wrote: > > We have some customers with some fairly beefy servers. They can get the > > system into an unusable state that has been reported on lkml before. > > > > The two attached patches applied to 2.4.19 fix the problem on our test > > boxes. > > > > Are these patches still considered a good idea for 2.4? Is there > > something better I should be using? > > Yes, these patches are a good idea. I'm curious why they > haven't been submitted to Marcelo yet ;) > > Rik
-- James Cleverdon IBM xSeries Linux Solutions {jamesclv(Unix, preferred), cleverdj(Notes)} at us dot ibm dot com
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