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SubjectRe: [PATCH]O18.1int

On 2003-08-23 12:21:14 Con Kolivas wrote:

> On Sat, 23 Aug 2003 19:08, Thomas Schlichter wrote:
>> On Saturday 23 August 2003 07:55, Con Kolivas wrote:
>> First of all... Your interactive scheduler work is GREAT! I really
>> like it...!
> P.S. All this may be moot as it looks like I, or someone else, may
> have to start again.

If you do, please remember this report. Quick summary: All problem areas
I've seen are completely resolved - or at least to a major extent.
Blender, wine and "cp -a".

Andrew Mortons red flag was a good incentive to run my tests on a
pure 2.6.0-test4 and write down the outcome. Adding the O18.1int after
this really stand out.

I won't repeat all my hardware or software facts, but thought I'd add a
few words on tweaks that might have influence: File system is ext2 with
all partitions mounted "noatime". Disk readahead has been upped by
"hdparm -a 512". VM swappiness reduced to 50 (I've got 128 meg mem).
/dev/rtc is changed to 666, read/write for everybody, and
/proc/sys/dev/rtc/max-user-freq is at 1024.

_The game "Baldurs Gate I" under winex 3.1_

Loads but is seriously starved. Sound repeats and graphic freezes occur
with a wave-like frequency. Mouse pointer can hardly be controlled.
Playability 0 of 10.

Not starved for most of the time, and I can not cause "priority
inversion" on demand with my usual tricks. There _are_ random freezes
but the game recovers within 2 seconds. Playability 8.

_Blender 2.23 (standalone, and xmms 1.2.7 on a directory of mp3s)_

Doing a slow "world plane" rotate around the axes is in perfect sync. No
freezes (and no music skips).

The same as vanilla -test4.

_Blender 2.28_

The slow "world plane" rotate cause a 2 to 5 second freeze, quickly
repeating itself if I continue the rotate. Mouse pointer can become
invisible, freeze or jerk right across the screen while loosing its grip
of the world plane grid.

Perfect sync! How did you achieve this Con? No matter how long I do the
slow "world plane" rotate I can not get it to freeze. Same with a quick

_Blender 2.28 plus xmms 1.2.7_

Short blackout, ca 3 seconds, at the beginning of a new song if I starve
xmms with the slow "world plane" rotate. Not during the song, only at
the beginning.

Music perfect during any rotation. Both beginning of songs and the rest.

_"cp -a" of /usr from hda to hdc and
using Opera 6.12 "software scrollwheel" on (page has 70+ small graphics) or a
long comment page_

"cp" PRI is 15-16, Opera PRI is 15. Slight jerk every 5 second while
scrolling the page on lowest speed.

"cp" PRI is 17-18, Opera PRI is 15. Perfect smoothness while scrolling.

Mats Johannesson
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