msgmap limit

[rodrigo escamilla]

If an overflow occurs when the kernel requests
space for a new message or releases space used by a received message,
the system issues the message:

DANGER: mfree map overflow

Would this error show up in the syslog???

[Michael Tully]

This may not print to syslog, but most likely will to the dmesg output. There is a small procedure you can do utilising 'cron' that will place these messages from 'dmesg' output into the 'syslog'. This procedure is mentioned as part of the 'dmesg' man page.

1,11,21,31,41,51 * * * * /usr/bin/dmesg - >> /var/adm/syslog/syslog.log

[S.K. Chan]

Yes it will be logged in /var/adm/syslog/syslog.log. It will look like this ..

vmunix: danger: mfree map overflow

[T G Manikandan]

This error shows on syslog.log file.

When the semaphore usage is heavy on the system you get these messages in the syslog.

Increase the value of semmap
in the kernel.


THanks