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SubjectVM tests on 2.4.14-pre3 and 2.4.13-ac3
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Summary:

2.4.14-pre3 The greased weasel is back
2.4.13-ac3 Inconsistent results on mtest01
2.4.13-ac3-freeswap patch for 2.4.12-ac3 makes results consistent in mtest01

Test: Run mtest01 and mmap001 from Linux Test Project.
Listen to long running (50+ minutes) mp3 sampled at 128k.

Default kernel parameters.

Light interactive use: lynx, 2 bitchx (console IRC client) sessions,
vmstat 8, iostat -d 10. (52k link to net - mostly idle).

2.4.13-pre3 had much better interactive response than 2.4.13-ac3
during these tests. No X.

Hardware:
AMD 1333 Athlon
512 MB RAM
1024 MB swap

mtest01
=======

2.4.14-pre3

mp3blaster did not skip. Best time I ever recorded for this test
without mp3 skipping. Previous "best" with no mp3 skips was:
2.4.13-pre3aa1-page-cluster=2
Elapsed (wall clock) time: 47.878

Averages for 10 mtest01 runs
bytes allocated: 1233859379
User time (seconds): 2.034
System time (seconds): 3.036
Elapsed (wall clock) time: 30.517
Percent of CPU this job got: 16.10
Major (requiring I/O) page faults: 107.0
Minor (reclaiming a frame) faults: 302029.3

2.4.13-ac3

Played about 90 seconds of mp3 during 200 second run.
747634688 - 1181745152 bytes allocated per iteration.

Averages for 10 mtest01 runs
bytes allocated: 894120755
User time (seconds): 1.499
System time (seconds): 2.744
Elapsed (wall clock) time: 20.646
Percent of CPU this job got: 20.40
Major (requiring I/O) page faults: 101.9
Minor (reclaiming a frame) faults: 218898.0


2.4.13-ac3-freeswap

Played about 120 seconds of mp3 during 350 second run.

Averages for 10 mtest01 runs
bytes allocated: 1244449996
User time (seconds): 2.033
System time (seconds): 3.761
Elapsed (wall clock) time: 35.219
Percent of CPU this job got: 16.00
Major (requiring I/O) page faults: 114.1
Minor (reclaiming a frame) faults: 304611.1


mmap001 test
============

2.4.14-pre3

mp3 did not skip.

Average for 5 mmap001 runs
bytes allocated: 2048000000
User time (seconds): 19.578
System time (seconds): 17.388
Elapsed (wall clock seconds) time: 171.45
Percent of CPU this job got: 21.20
Major (requiring I/O) page faults: 500158.8
Minor (reclaiming a frame) faults: 41.4

About 2-3 seconds of mp3 skip for entire run.

2.4.13-ac3
Average for 5 mmap001 runs
bytes allocated: 2048000000
User time (seconds): 19.412
System time (seconds): 16.974
Elapsed (wall clock seconds) time: 151.49
Percent of CPU this job got: 23.40
Major (requiring I/O) page faults: 500180.2
Minor (reclaiming a frame) faults: 20.0

About 2-3 seconds of mp3 skip for entire run.

2.4.13-ac3-freeswap
Average for 5 mmap001 runs
bytes allocated: 2048000000
User time (seconds): 19.260
System time (seconds): 17.456
Elapsed (wall clock seconds) time: 151.44
Percent of CPU this job got: 23.80
Major (requiring I/O) page faults: 500174.0
Minor (reclaiming a frame) faults: 20.0

runalltests.sh
==============

When executing runalltests.sh from LTP, 2.4.14-pre3 returns
FAIL on the personality01 tests (11 FAIL) whereas 2.4.13-ac3
returns PASS on the same tests.

--
Randy Hron

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