SRX Services Gateway
Highlighted
SRX Services Gateway

SRX 240h high CPU

‎11-18-2014 03:44 AM

Hi

 

I have high CPU usage (96%) on my SRX 240H.It lasts max 1 min and it appears one time per week.I checked

traffic on interfaces and flow session during that  high CPU period but everything is normal.

 

Any ideas what could cause the high CPU or some troubleshooting steps ?

 

thanks

 

 

 

 

3 REPLIES 3
Highlighted
SRX Services Gateway

Re: SRX 240h high CPU

‎11-18-2014 07:50 PM

High RE CPU or Dataplane CPU?

 

Please provide below outputs.

root@SRX> show chassis routing-engine

root@SRX>show security monitoring performance spu

 

If RE CPU is high, make sure you dont have any extended logging like traceoptions,policy logging with event mode.

 

root@SRX# show | display set | match traceop

 

Delete if you see any active traceoptions

 

root@SRX# show security log

 

if you see mode as event then disable it and then you need to modify configuartion to stream mode (http://kb.juniper.net/KB16224)

 

Also check if there are multiple users logged in and making chnages, please logout unwated users

 

root@SRX> show system users

root@SRX> request system logout user   <user>               Name of user

 

Wait for some time and see if the utilization comes down.

 

root@SRX210>show system processes extensive | no-more willhelp you to identify which process is running high.

 

Thanks,

Suraj

Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too

 

 

 

 

 

Thanks,
Suraj
Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too
Highlighted
SRX Services Gateway

Re: SRX 240h high CPU

‎11-19-2014 01:05 AM

Hi

 

Thanks for answer the high cpu lasted  maybe 1 min than it was OK.I just wanted to know if it is normal that it raises sometimes so high or is there some problem ?

Highlighted
SRX Services Gateway

Re: SRX 240h high CPU

‎11-19-2014 01:11 AM

Momentary CPU spikes in a production device is expected due to many reasons likes traffic spikes, route convergence and all.

 

Thanks,

Suraj

Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too

 

Thanks,
Suraj
Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too
Feedback