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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_121467's avatar
shaggy_121467
Icon for Cumulonimbus rankCumulonimbus
Dec 18, 2014

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

 

shaggy_121467's avatar
shaggy_121467
Icon for Cumulonimbus rankCumulonimbus
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.