VM test on 2.4.14pre3aa2 (compared to 2.4.14pre3aa1)

rwhron
2001-10-28T17:05:23Z

Summary: 2.4.14pre3aa2 gave oom errors not seen in 2.4.14pre3aa1.

Test: Usual scripts to execute mtest01 and mmap001.
Listen to long mp3 with mp3blaster.

mtest01 -p 80 -w
================

2.4.14pre3aa1

Averages for 10 mtest01 runs
bytes allocated: 1246232576
User time (seconds): 2.105
System time (seconds): 2.773
Elapsed (wall clock) time: 59.503
Percent of CPU this job got: 7.80
Major (requiring I/O) page faults: 132.8
Minor (reclaiming a frame) faults: 305043.1

2.4.14pre3aa2

Averages for 10 mtest01 runs
bytes allocated: 1254201753
User time (seconds): 2.211
System time (seconds): 2.794
Elapsed (wall clock) time: 65.176
Percent of CPU this job got: 7.20
Major (requiring I/O) page faults: 129.7
Minor (reclaiming a frame) faults: 306988.9

mmap001 -m 500000
=================

This test worked on 2.4.14pre3aa1, but on 2.4.14pre3aa2, each
iteration was terminated by signal 9. Also an irc client I
had running was killed.

/var/log/kern.log had these messages:

Oct 28 11:50:24 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
Oct 28 11:50:24 rushmore kernel: VM: killing process mmap001
Oct 28 11:51:07 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1f0/0)
Oct 28 11:51:07 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
Oct 28 11:51:08 rushmore last message repeated 3 times
Oct 28 11:51:08 rushmore kernel: VM: killing process bx
Oct 28 11:51:09 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1f0/0)
Oct 28 11:51:12 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
Oct 28 11:51:13 rushmore last message repeated 2 times
Oct 28 11:51:13 rushmore kernel: VM: killing process mmap001
Oct 28 11:51:47 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
Oct 28 11:51:47 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1f0/0)
Oct 28 11:51:47 rushmore kernel: __alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
Oct 28 11:51:47 rushmore kernel: VM: killing process mmap001

Hardware:
AMD Athlon 1333
512 MB RAM
1024 MB swap.

--
Randy Hron