On Wed, 2003-03-19 at 21:27, Ed Tomlinson wrote:

On March 19, 2003 06:45 pm, Steven P. Cole wrote:

quoted

On Wed, 2003-03-19 at 17:33, Andrew Morton wrote:

quoted

"Steven P. Cole" [off-list ref] wrote:

quoted

quoted

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

Replying to myself for a followup,

I repeated the tests with 2.5.65-mm2 elevator=deadline and the
situation was similar to elevator=as.  Running dbench on ext3, the
response to desktop switches and window wiggles was improved over
running dbench on reiserfs, but typing in Evolution was subject to long
delays with dbench clients greater than 16.

OK, final question before I get off my butt and find a way to reproduce
this:

Does reverting

http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.65/2.5.65-mm2/broken-ou
t/sched-2.5.64-D3.patch

help?

Sorry, didn't have much time for a lot of testing, but no miracles
occurred.  With 5 minutes of testing 2.5.65-mm2 and dbench 24 on ext3
and that patch reverted (first hunk had to be manually fixed), I don't
see any improvement.  Still the same long long delays in trying to use
Evolution.

Steven,

Do things improve with the patch below applied?  You have to backout the 
schedule-tuneables patch before appling it.

Ed Tomlinson

[patch snipped]

I tried that patch, and the bad behavior with the Evolution "Compose a
Message" window remains.  With a load of dbench 12, I had stalls of many
seconds before I could type something.  Also, here is an additional
symptom.  If I move the Evolution "Compose" window around rapidly, it
leaves a smear of itself on the screen under itself.  With all -mm2
variants, this smear stays for an intolerably long time (tens of
seconds) while that window does not record keyboard strokes.  2.5.65-bk
on the other hand exhibits much more benign behavior.  Under similar
load, the smear disappears in a few seconds and the window starts
responding to keyboard events.  I just now rebooted 2.5-bk to verify,
and it is still responsive at dbench client loads which would make
Evolution unusable with 2.5.65-mm2.  Mozilla, on the other hand, still
works OK under load with -mm2.  This was all with dbench running on
ext3.

I won't be able to do any more testing for several hours, so have fun!

Steven

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