IMON Event Queue Overflow
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## IMON Event Queue Overflow

A problem has occurred with the File Alteration Monitor daemon (fam) which maintains a fixed length queue of events of file system activity. This queue of file activity has overflowed.

Possible causes include:

- fam hung while accessing a down or unreachable NFS server.

- An automounted file system was dismounted while fam was monitoring a large directory on that remote machine.

Note: If this problem is sporadic it is okay to ignore it.

If the problem frequently reoccurs, try the following steps:

- make sure the remote host is up and reachable (if applicable.)

- Edit the file /etc/inetd.comf and append “ -t 60” to the line that begins “sgi_fam/1” which will decrease the polling interval so fam will only poll NFS servers every 60 seconds for changes.

- Or instead of the previous step, edit /etc/inetd.conf and append “ -l” to the line that begins “sgi_fam/1” which will prevent fam from polling all NFS filesystems.

- An experienced System Administrator can increase the variable QSIZE in /var/sysgen/master.d/imon, reconfigure the kernel and reboot. This will increase the length of the queue of events.

Additional information about fam is available from man `fam` and the book Irix Admin: System Configuration and Operation, chapter 9.

If the problem persists, contact your System Administrator or your service provider.

For information on how to configure or disable System Alerts, click here.

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