Hello,
I've tried 2.5.66, and have the same trouble with interactivity issues.
Pre-empt kernel, crusoe tm5800 processor, 256MB of ram.
"setiathome -verbose" running at it's default priority (1) in an xterm
still seems to trigger it. Applications that were already running seem
to stay interactive. New processes seem to hang, I had ls in an xterm
hang half way through a listing, after a bit of time and moving windows
around (my theory being to send expose events to wake up other apps
might help unhang) the system responds again. Other applications
such as rox filer, xv, mplayer, gimp, have all hung during load or just
after. Mplayer showed a few frames of video and stopped, once restarted
though it plays fine. The same goes for the other applications, after
being loaded once they tend to work the second time.
Killing seti brings everything back to normal, instantly.
Here is a top listing during a hang:
Tasks: 50 total, 3 running, 46 sleeping, 0 stopped, 1 zombie top
- 22:16:18 up 16 min, 6 users, load average: 2.13, 1.74, 1.08 Tasks:
47 total, 4 running, 42 sleeping, 0 stopped, 1 zombie Cpu(s):
1.0% user, 1.3% system, 97.7% nice, 0.0% idle, 0.0% IO-wait Mem:
240208k total, 131052k used, 109156k free, 4624k buffers Swap:
257032k total, 0k used, 257032k free, 75092k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
173 zed 17 1 15904 14m 352 R 98.3 6.0 11:06.11 setiathome
230 zed 15 0 1856 984 1740 R 0.7 0.4 0:00.38 top
116 root 15 0 21620 15m 7944 S 0.3 6.6 0:51.21 X
157 zed 15 0 4072 2292 2860 S 0.3 1.0 0:14.39 ssh
161 root 15 0 4756 2448 4468 S 0.3 1.0 0:00.80 xterm
1 root 15 0 480 232 456 S 0.0 0.1 0:05.10 init
2 root 34 19 0 0 0 R 0.0 0.0 0:00.01 ksoftirqd/0
3 root 5 -10 0 0 0 S 0.0 0.0 0:00.08 events/0
4 root 15 0 0 0 0 S 0.0 0.0 0:00.00 kapmd
5 root 25 0 0 0 0 S 0.0 0.0 0:00.00 pdflush
6 root 15 0 0 0 0 S 0.0 0.0 0:00.06 pdflush
7 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kswapd0
Here is a vmstat 1 listing:
(mplayer was launched but not appearing)
3 0 0 99640 4712 83300 0 0 0 0 1060 76 96 4 0 0
3 0 0 99952 4712 83300 0 0 0 0 1001 17 99 1 0 0
3 0 0 99120 4712 83300 0 0 0 0 1063 70 97 3 0 0
3 0 0 100004 4712 83300 0 0 0 0 1001 10 100 0 0 0
5 0 0 99016 4712 83300 0 0 0 0 1082 107 97 3 0 0
3 0 0 99900 4712 83300 0 0 0 0 1253 411 96 4 0 0
3 0 0 99008 4712 83300 0 0 0 0 1139 195 96 4 0 0
3 0 0 99892 4712 83300 0 0 0 0 1008 63 100 0 0 0
(killed seti and mplayer shows itself)
0 0 0 111236 4716 83552 0 0 140 0 1043 523 48 7 9 36
1 0 0 111080 4716 83680 0 0 128 0 1273 1302 28 6 66 0
1 0 0 111088 4716 83680 0 0 0 0 1151 1044 27 5 68 0
0 0 0 110984 4716 83808 0 0 128 0 1127 1113 25 3 72 0
Hope this helps,
George
> Can you please test 2.5.66? Some things were fixed.
>
> Thanks.
>
> "George Glover" <zed@baldwinmail.org> wrote:
>>
>> I also have a similar problem, when running setiathome with priority
>> 1.
>>
>> All _running_ applications remain interactive, anything requring disk
>> access, in particular starting a new program, causes things to block.
>>
>> I've so far only been in X when this happens, mouse still moves,
>> remote applications update their windows fine, no lost keystrokes,
>> it's when I run something locally requiring disk IO.
>>
>> Renicing setiathome to -19 causes the problem to vanish.
>>
>> Dragging an xterm around seems to help it recover from a hang too.
>>
>> > - How much memory does the machine have?
>>
>> 256
>>
>> > - UP/SMP/preempt?
>>
>> preempt
>>
>> > - Did it happen in 2.5.64? 2.5.63? 2.4.20?
>>
>> 2.5.64
>>
>> > - Does it get better if you renice stuff?
>>
>> Yes
>>
>> > - What steps should others take to reproduce it?
>>
>> Running setiathome with priority one seems to do it for me.
>>
>> George
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This archive was generated by hypermail 2b29 : Mon Mar 31 2003 - 22:00:22 EST