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FaustoCarramate's avatar
FaustoCarramate
Icon for Nimbostratus rankNimbostratus
Mar 26, 2015

CPU usage - Platform 3600 - BIGIP 11.5

Hello all,

 

I have one query regarding CPU utilization measure on Platform 3600 running BIGIP 11.5.

 

Accordingly to my investigation this Platform has 1x CPU with 2x Cores and since BIGIP 11.3 TMM has support for multithread.

 

I have read the following sols sol15468 sol14358 sol14340

 

And I have some questions: 1. Why "The BIG-IP assigns one processing unit for Linux processes (usually CPU0)" ?

 

  1. Why "This processing unit will usually show higher overall CPU usage than the dedicated remaining processing unit" ?

     

  2. What are the formula/values for CPU utilization sent in snmp trap ?

     

  3. What are the formula/values for Concurrent connections sent in snmp trap ?

     

  4. What are the formula/values for throughput sent in snmp trap ?

     

I would be happy if someone could at least point me to good documentation regarding my queries...

 

Thank you all :) Regards, Fausto Carramate

 

application delivery
LTM
management
performance
snmp
TMOS

2 Replies

  • boneyard's avatar
    boneyard
    Icon for MVP rankMVP
    Apr 05, 2015
    i doubt there is documentation available, if you need it you might want to open a support case.
  • FaustoCarramate's avatar
    FaustoCarramate
    Icon for Nimbostratus rankNimbostratus
    Apr 06, 2015

    Hi,

     

    Actually the queries are not accurate. I manage to get things done by looking on the file F5-BIGIP-SYSTEM-MIB.txt.

     

    For cpu usage you can use one of the following counter:

    sysMultiHostCpuUsageRatio OBJECT-TYPE

     

    For throughput you can have an estimation using the following counters:

    sysIfxStatHcInOctets OBJECT-TYPE

     

    sysIfxStatHcOutOctets OBJECT-TYPE

     

    sysIfxStatHighSpeed OBJECT-TYPE

     

    For current number of connections:

    sysSctpStatConnects OBJECT-TYPE

     

    Regards, Fausto Carramate