Messages in this thread | | | Subject | Re: 2.5.65-mm2 | From | Steven Cole <> | Date | 20 Mar 2003 07:36:12 -0700 |
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On Wed, 2003-03-19 at 21:27, Ed Tomlinson wrote: > On March 19, 2003 06:45 pm, Steven P. Cole wrote: > > On Wed, 2003-03-19 at 17:33, Andrew Morton wrote: > > > "Steven P. Cole" <elenstev@mesatop.com> wrote: > > > > > 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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