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Old 12-14-2008, 10:37 PM
Moritz Muehlenhoff
 
Default Bug#429394: linux-image-2.6.18-4-686-bigmem: STIME of ps output for a process is not constant

On Sun, Jun 17, 2007 at 10:11:54PM +0300, Harhalakis Stefanos wrote:
> Package: linux-image-2.6.18-4-686-bigmem
> Version: 2.6.18.dfsg.1-12etch2
> Severity: normal
>
>
> STIME of a process jumps back and forward:
>
> Look at this output:
>
> # ps -afe |grep spamd
> root 28063 1 0 21:55 ? 00:00:00 /usr/sbin/spamd
> --max-children 30 --username=spamd -i -A 195.251.123.232 -x -d
> --pidfile=/var/run/spamd.pid
> spamd 28080 28063 0 21:55 ? 00:00:00 spamd child
> spamd 28081 28063 0 21:55 ? 00:00:00 spamd child
> root 28206 27204 0 21:56 pts/1 00:00:00 grep spamd
>
> # ps -afe |grep spamd
> root 28063 1 0 21:55 ? 00:00:00 /usr/sbin/spamd
> --max-children 30 --username=spamd -i -A 195.251.123.232 -x -d
> --pidfile=/var/run/spamd.pid
> spamd 28080 28063 0 21:56 ? 00:00:00 spamd child
> spamd 28081 28063 0 21:56 ? 00:00:00 spamd child
> root 28215 27204 0 21:56 pts/1 00:00:00 grep spamd
>
> # ps -afe |grep spamd
> root 28063 1 0 21:55 ? 00:00:00 /usr/sbin/spamd
> --max-children 30 --username=spamd -i -A 195.251.123.232 -x -d
> --pidfile=/var/run/spamd.pid
> spamd 28080 28063 0 21:55 ? 00:00:00 spamd child
> spamd 28081 28063 0 21:55 ? 00:00:00 spamd child
> root 28224 27204 0 21:56 pts/1 00:00:00 grep spamd
>
> hydra# ps -afe |grep spamd
> root 28063 1 0 21:55 ? 00:00:00 /usr/sbin/spamd
> --max-children 30 --username=spamd -i -A 195.251.123.232 -x -d
> --pidfile=/var/run/spamd.pid
> spamd 28080 28063 0 21:56 ? 00:00:00 spamd child
> spamd 28081 28063 0 21:56 ? 00:00:00 spamd child
> root 28445 27204 0 21:59 pts/1 00:00:00 grep spamd
>
> hydra# ps -afe |grep spamd
> root 28063 1 0 21:55 ? 00:00:00 /usr/sbin/spamd
> --max-children 30 --username=spamd -i -A 195.251.123.232 -x -d
> --pidfile=/var/run/spamd.pid
> spamd 28080 28063 0 21:56 ? 00:00:00 spamd child
> spamd 28081 28063 0 21:56 ? 00:00:00 spamd child
> root 28447 27204 0 21:59 pts/1 00:00:00 grep spamd
>
> hydra# ps -afe |grep spamd
> root 28063 1 0 21:55 ? 00:00:00 /usr/sbin/spamd
> --max-children 30 --username=spamd -i -A 195.251.123.232 -x -d
> --pidfile=/var/run/spamd.pid
> spamd 28080 28063 0 21:55 ? 00:00:00 spamd child
> spamd 28081 28063 0 21:55 ? 00:00:00 spamd child
> root 28449 27204 0 21:59 pts/1 00:00:00 grep spamd
>
> As you can see from the 'grep' pid, all of them are one after another. Watch
> the STIME of spamd processes. Some times it says 21:55 and others 21:56.
>
> Other processes don't do this.
>
> Hardware is:
> IBM X-Series
> 2 Xeon 3.6GHz with hyperthreading enabled
> 4GB of memory

Does this error still occur with more recent kernel versions?

If you're running Etch, could you try to reproduce this bug
with the 2.6.24 based kernel added in 4.0r4?
http://packages.qa.debian.org/l/linux-2.6.24.html

Cheers,
Moritz



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Old 12-15-2008, 11:04 PM
Stefanos Harhalakis
 
Default Bug#429394: linux-image-2.6.18-4-686-bigmem: STIME of ps output for a process is not constant

On Monday 15 December 2008, Moritz Muehlenhoff wrote:
> Does this error still occur with more recent kernel versions?
>
> If you're running Etch, could you try to reproduce this bug
> with the 2.6.24 based kernel added in 4.0r4?
> http://packages.qa.debian.org/l/linux-2.6.24.html

I'm sorry but I don't know of a way to reproduce this on-demand, even on the
same machine with the same kernel. I know that this is an ugly bug report but
I can only report further similar problems or perhaps try to automate this in
a way.

To make this harder, ps shows the date instead of the time a process started
when there are more than 24h passed and thus I cannot test it with other
processes. This is a server machine that I cannot reboot for testing.



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