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Forum Discussion

Muhammad_Irfan1's avatar
Muhammad_Irfan1
Icon for Cirrus rankCirrus
Dec 16, 2014

Busiest CPU jumps to 100% usage

F5 LTM memory usage id 18.1% and busiest CPU remains between 6 to 13 %. But yesterday and today again I noticed a spike in busiest CPU and busiest cpu rises to 100% while average cpu was 17 at tha...
shaggy's avatar
shaggy
Icon for Nimbostratus rankNimbostratus
Dec 18, 2014

is it happening while you do something on the f5? are you creating UCS backups when the CPU spikes?

 

shaggy's avatar
shaggy
Icon for Nimbostratus rankNimbostratus
Dec 19, 2014
SOL15710: Large BIG-IP files may cause the csyncd service to spike CPU utilization - https://support.f5.com/kb/en-us/solutions/public/15000/700/sol15710.html disabled CMP could cause a single CPU to spike if something happened to that virtual server - for example, if an irule is applied and one request caused something to go awry, or if that virtual server suddenly had a high number of connections. You should open a support case.