Counters spiking on Solaris

Mike Brodbelt <[email protected]>
Newsgroups gmane.network.net-snmp.user
Message-ID <[email protected]>
Hi,

I'm trying to graph context switches and interrupts from a machine
running Solaris 10. The machine is a T1000 under a reasonable load, and
I'm polling these values:-

UCD-SNMP-MIB::ssRawContexts.0
UCD-SNMP-MIB::ssRawInterrupts.0

What I'm seeing is a counter value that sits without changing:-

# snmpget -v 2c -c public wg-001 .1.3.6.1.4.1.2021.11.60.0; \
> sleep 30 ; \
> snmpget -v 2c -c public wg-001 .1.3.6.1.4.1.2021.11.60.0 ; \
> sleep 30; \
> snmpget -v 2c -c public wg-001 .1.3.6.1.4.1.2021.11.60.0
UCD-SNMP-MIB::ssRawContexts.0 = Counter32: 1634479987
UCD-SNMP-MIB::ssRawContexts.0 = Counter32: 1634479987
UCD-SNMP-MIB::ssRawContexts.0 = Counter32: 1634479987

Every so often it seems to remember to update, and I get an enormous
spike on the graph. I'm graphing the same OIDs successfully on other
machines - ca anyone shed any light on why the counter isn't being
updated for long periods, and is there anything I can do about it?

Thanks,

Mike

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