Fortigate 200A firewall CPU high resource usage

Posted by user119720 on Server Fault See other posts from Server Fault or by user119720
Published on 2013-03-11T03:29:23Z Indexed on 2013/11/07 9:58 UTC
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networking

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firewall

This morning I'm receiving complaints from several end users that saying their whole department network are slow and have intermittent.

Therefore I've checked our firewall to see whether if something goes wrong with the device.From my observation in the FortiGate dashboard status, the CPU resources is very high (99 percent). My first assumption is to clear the log since in the alert log the Fortigate log mention that it is already 90% full.Based on my understanding,the log can be cleared by restarting the firewall.

After restarting the firewall the network seems okay again but then after several minutes it went up again.The condition still persist until now.

Can someone show me where else I can check to fix this issue? I've really appreciate any help that I can get here.Thanks.

Edit:

diag sys top command

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