Yes, you are right, -Cr2 is extremely slow. What I meant here is, I am not able to get the time down to less than ~50sec, when playing with different -Cr values, betting it -Cr20 (default), -Cr60 or -Cr100.

No -Cr60 - ifEntry :-

real 1m0.221s

No -Cr60 - ifXEntry :-

real 0m49.692s

-Cr2 - ifEntry :-

real 4m27.568s

-Cr2 - ifXEntry :-

real 4m10.640s

Is it possible to tell the script not to poll the unwanted data?

Thanks.

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I find that very hard to believe.

-Cr2 would be unbearably slow, since the default is 20.

adam.

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I have tried it with all different values, no -Cr60, -Cr2, -Cr100, and even more. There is absolutely no difference.

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try same commands without '-Cr60' option

and second one with snmpwalk (instead snmpbulkwalk).

Mike Stupalov
http://observium.org/

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Hi,

We have heavily loaded Brocade MLXe routers, and polling time is very high for these devices. The same is seen for few Arista switches (at longer distances) as well.

This certainly is related to IF-MIB, trying to poll lots of data statistics for all interfaces, resulting in ports.inc.php module run time of ~150sec+. Ideally, we want to reduce this polling time to <60sec.

time /usr/bin/snmpbulkwalk -Cr60 -v2c -c 'jtv' -OQUs -m IF-MIB -M /home/jtv/observium//mibs/rfc:/home/jtv/observium//mibs/net-snmp 'udp':'br02.lhr02':'161' ifEntry

real 0m57.616s

user 0m0.044s

sys 0m0.012s

time /usr/bin/snmpbulkwalk -Cr60 -v2c -c 'jtv' -OQUs -m IF-MIB -M /home/jtv/observium//mibs/rfc:/home/jtv/observium//mibs/net-snmp 'udp':'br02.lhr02':'161' ifXEntry

real 0m52.763s

user 0m0.032s

sys 0m0.024s

We do not care about some of the interface statistics, for example, mtu, speed, duplex, promiscuous mode, trunk, vlan, etc. We only want interface traffic in/out and error statistics.

Is there a way to selectively modify any discovery/polling/MIB files, and only keep the statistics we are interested in?

Thanks,

Jaynee

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