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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...
kash_49328's avatar
kash_49328
Icon for Nimbostratus rankNimbostratus
Dec 17, 2014

It can be anything. Check the logs and look for repeating logs. There can be problems like nodes flapping, OS bug anything.

 

show sys log ltm

 

If you see something fishy open a support case.

 

kash_49328's avatar
kash_49328
Icon for Nimbostratus rankNimbostratus
Dec 18, 2014
tail -f does work in F5 but it has to be in the bash not in tmsh so you have enter something like below. run util bash tail -f /var/log/ltm