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Forum Discussion

IanGrant_329505's avatar
IanGrant_329505
Icon for Nimbostratus rankNimbostratus
Jan 15, 2018

Identifying cause of high CPU

Hi,   We're seeing a large increase in CPU on our version 10.2.4 LTM devices. When we look at top on the boxes tmm is the cause and it's significantly higher on one of the core's - 60% on 1 as op...
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Lee_Sutcliffe's avatar
Lee_Sutcliffe
Icon for Nacreous rankNacreous
Jan 15, 2018

Hi Ian,

Do you have any iRules in use? Seeing one CPU significantly more utilised than another is a prime candidate for CMP demotion - when static a variable using the global name space e.g. 

$::var
is not compatible with multi-processing.

https://support.f5.com/csp/article/K13033

Lee