clock update and frozen CPU/traffic stats
Amit Dor-Shifer <[email protected]>
| Newsgroups | gmane.network.net-snmp.user |
|---|---|
| Message-ID | <[email protected]> |
Hi. I've recently witnessed a phenomenon of a/m stats remaining constant for a quite a lengthy duration. The related OIDs are: ifTable & systemStats. While monitoring those OIDs, I've also monitored those stats via alternative pathways (CPU via 'top', if stats via kernel statistics in /sys/class/net), to assert that indeed the actual data is being modified. Apparently the host's clock has been updated w/o restarting snmpd. I've learned this from looking at the PID file: ~ # stat /var/run/snmpd.pid File: `/var/run/snmpd.pid' Size: 5 Blocks: 8 IO Block: 4096 regular file Device: 803h/2051d Inode: 546305 Links: 1 Access: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2010-05-08 11:20:42.308213175 +0000 Modify: 2010-05-08 11:20:42.308213175 +0000 Change: 2010-05-08 11:20:42.308213175 +0000 The skewed times are according to the pre-adjusted clock. Once I restarted snmpd, a/m objects went back to being updated. I'm wondering, though, whether I should generate a dependency between the ntpd & snmpd services. Arguably, a shift in machine clock has profound affects on snmpd. Any thoughts? Thanks, Amit ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Net-snmp-users mailing list [email protected] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users