On Wed, 2003-03-19 at 13:10, Andrew Morton wrote:

Steven Cole [off-list ref] wrote:

quoted

On Wed, 2003-03-19 at 02:21, Andrew Morton wrote:

quoted

http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.65/2.5.65-mm2/

I am seeing a significant degradation of interactivity under load with
recent -mm kernels.  The load is dbench on a reiserfs file system with
increasing numbers of clients.  The test machine is single PIII, IDE,
256MB memory, all kernels PREEMPT.

(This email brought to you while running dbench 128 on ext3)

There's a pretty big reiserfs patch in -mm.  Are you able to whip up
an ext2 partition and see if that displays the same problem?

I repeated the test on an ext3 partition, and the response with 28
dbench clients running is definitely better, although I'm starting to
get some stalls of a couple seconds while typing this in Evolution on
the machine under test.  Now it's becoming intolerable, so I aborted the
dbench run so I could finish this email.

This was with 2.5.65-mm2 and elevator=as.  I'll repeat soon with
elevator=deadline.  I didn't try typing in Evolution with 2.5.65-bk
under high loads, so I'll also give that a try.

Summary: using ext3, the simple window shake and scrollbar wiggle tests
were much improved, but really using Evolution left much to be desired.

Steven
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