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SubjectRe: Strange syslogd behavior under 2.2.10 and 2.2.11
Hi Gregory.

>>> Experiencing a strange thing with syslogd under 2.2.10 and
>>> 2.2.11 (at least this is the first I have noticed it). At
>>> apparently random times, the disk starts grinding and syslogd
>>> sucks up 100% of all cpu cycles. After about a minute
>>> everything settles down again and the cpu usage drops down to
>>> normal for syslogd. But, after a short time (maybe an hour),
>>> this same thing happens again. Any ideas?

>> That 'about an hour' sounds too much like cron to me, so I'd
>> suggest you look through the various cron jobs configured on
>> your system. Start with the contents of /etc/cron.hourly/ as
>> the obvious starting point...

> I thought this as well, but have nothing run hourly in my
> crontab (or anyone elses).

In that case, I'd check your log to see what messages are getting
added to syslog when it happens, and see if there's any clues there.

> Besides, I don't see how a crontab entry would cause syslogd to
> suddenly start sucking 100% of the cpu?

All it needs is for cron to run a job that does something that makes
heavy use of the CPU - remember, it's not the program that starts the
rogue that causes the problems, but the rogue itself, and the rogue
doesn't care how it gets run.

Best wishes from Riley.

+----------------------------------------------------------------------+
| There is something frustrating about the quality and speed of Linux |
| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this XXXX feature, but I bet someone |
| else has already done so and is just about to release their patch. |
+----------------------------------------------------------------------+
* ftp://ftp.MemAlpha.cx/pub/rhw/Linux
* http://www.MemAlpha.cx/kernel.versions.html

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