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High CPU due to packet capture

Hi,

IF we do not remove packet capture on ASA does it cause CPU to spike?

Regards,

Krishna

  • Firewalling
12 REPLIES

High CPU due to packet capture

Hi,

Still awaiting ur reply

New Member

High CPU due to packet capture

whether a single src to single dst pcap or network ?

ideally not recommended to keep the pcap enabled, but still less impact on asa.

instead of you deciding pcap as a source of high cpu, it would be better to check whether its a cosmetic bug or genuine bug.

regards

Rajesh

High CPU due to packet capture

Hi,

There were 4 packet caps running on the device all were SRC to DEST.

How much CPU does each packet cap can take.

Regards,

Krishna

New Member

High CPU due to packet capture

Pls ask if you have some other queries. Only development team can answer to ur qsn.

High CPU due to packet capture

Cpu was alright when captures were removed so just wanted to make sure it was due to that

Cisco Employee

Re:High CPU due to packet capture

Did we have circular buffer captures enabled ? Which asa device are you seeing this issue on ?

Re:High CPU due to packet capture

No. Circualr buffer was nt enabled, my question is once the buffer is full, will that lead to high CPU or not. The ASA is 5540

Cisco Employee

Re:High CPU due to packet capture

Hi Krishna,

We have seen this problem before on some TAC cases and we do have a Bug Defect for the same issue.

Although this Bug Defect is not resolved as we were not able to recreate the issue.

Re:High CPU due to packet capture

Hi,

Thanks very much replying, so ideally it should be dropping the packets once the buffer is full.

Regards,

Krishna

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