Or you could try something like: top -b -d .01 | tee >> toptest And watch the time when it happens so that you can find the corresponding output. The '-b' is for cleaner output and the '-d .01' specified the time interval between data outputs. - James W. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Mon, Jan 19, 2009 at 8:46 PM, Randall R Schulz wrote:

On Monday January 19 2009, Randall R Schulz wrote:

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Hi,

I've noticed by watching GKrellM that every five minutes there's a brief burst of about 170 forks within a period of a second or so on my openSUSE 11.1 system.

Another thing I noticed, owing to having a remote GKrellM display for my 10.3 box displayed on my 11.1 box, is that _both_ of these systems exhibit the same phenomenon. Moreover, it is _synchronized_ between the two systems, implying they're both doing this on a wall-clock schedule (both systems use NTP, of course, so they're clocks are at most a small fraction of a second disparate).

Does this help suggest a cause?

Randall Schulz --

Maybe shutdown crond for a while as a test? -- ----------JSA--------- Someone stole my tag line, so now I have this rental. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Tuesday January 20 2009, Randall R Schulz wrote:

On Monday January 19 2009, John Andersen wrote:

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...

Maybe shutdown crond for a while as a test?

I did think of cron. On your suggestion, I ran the test of temporarily shutting it down and indeed, this prevents the fork burst.

One thing I don't think I've ever been able to do is _find_ all the crontabs in a SuSE Linux / openSUSE installation.

OK, so I did some script spelunking and I think I know where the fork burst originates, based on the fact that only one crontab has a 5-minute interval configured: Munin's cron script. Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

* Randall R Schulz [01-20-09 09:03]:

One thing I don't think I've ever been able to do is _find_ all the crontabs in a SuSE Linux / openSUSE installation.

/var/spool/cron/ /etc/cron.d/ /etc/cron.hourly/ /etc/cron.daily/ /etc/cron.weekly/ /etc/cron.monthly/ -- Patrick Shanahan Plainfield, Indiana, USA HOG # US1244711 http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://counter.li.org -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Tuesday January 20 2009, Patrick Shanahan wrote:

* Randall R Schulz [01-20-09 09:03]:

...

One thing I don't think I've ever been able to do is _find_ all the crontabs in a SuSE Linux / openSUSE installation.

/var/spool/cron/ /etc/cron.d/ /etc/cron.hourly/ /etc/cron.daily/ /etc/cron.weekly/ /etc/cron.monthly/

Actually, if you look in those directories, you see that they're scripts run on the specified interval by /usr/lib/cron/run-crons (itself run once per minute by the entry in /etc/crontab). The actual crontabs are /etc/crontab and the files in /etc/cron.d/ (and any per-user crontab established via the crontab comman; they're recorded in /var/spool/cron/tabs/).

-- Patrick Shanahan

Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Tuesday January 20 2009, Dominique Leuenberger wrote:

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...

...

On 1/20/2009 at 3:23 PM, Randall R Schulz wrote:

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Are you certain about the fact they run every minute? In my system they appear to run every 15 minutes -*/15 * * * * root test -x /usr/lib/cron/run-crons && /usr/lib/cron/run-crons >/dev/null 2>&1

Sorry. That's what I meant to say.

Which makes perfect sense, as the 'smallest' interval the scripts have is cron.hourly (so every 4 checks).

Dominique

Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org