Asa 5520 | CPU Spikes above 90% for 5 Seconds then it went down to 35 - 40%

Hi Experts
i have ASA 5520 , some times the CPU Spikes above 90% for 5 Seconds then it went down to 35 - 40% ,but what happened when it shoots to 90% all connection go through this ASA gets drops then i receive complain since application traffic traverse this FW ,so how can i see the CPU History for last 1 week , i need to see the times and the date WHEN THE CPU went above 90% for 4 seconds
thanks
jamil

Hi Ibrahim,
from he ASA you would not be able to pull data for last one week, you would need an SNMP server or anyother monitoring server for pulling reports.
For high CPU issues, I would suggest opening a TAC case for it, since it requires detailed investigation and access to your box. Just as in initial pointer, these outputs might help you identifying the cause:
show proc cpu-usage
show traffic
show conn count
show interface
Remember these outputs are useful only if they are from the time of the issue, check what traffic is hogging the CPU and if the ASA is being overwhelmed or not.
Thanks,
Varun Rao
Security Team,
Cisco TAC

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