HIGH CPU

[richardroi]

Hello Support,

I've noticed that suddenly the cpu consumption is now reaching 100+%, sometimes it stayed there for 3 - 5 seconds.
I have 8 cores cpu, 8gb ram

When it reached 100+, lines are affected (still monitoring), but the load average is still minimal.
What is that process?
Thank you.

[richardroi]

Update!
I noticed that when the call comes in and created the meetme, that is when the cpu goes to 100+%! Affecting the line!
Please help!

[Acidshock]

How many agents and how many calls coming in at the same time? Also check your max calls per second under the server. 100+ lines on a single server is really pushing the limit of the box.

Just an FYI the most CPU use comes from building and tearing down the call.

[richardroi]

Restarted the server, back to normal. But i'm still digging why/what happened!
Thank you. Will keep the forum posted.

[geoff3dmg]

Did you have any stuck channels perhaps?

[richardroi]

Stuck channels? I believe if it is red, kernel is consuming the cpu usage. It is supposed to be green on htop for normal consumption, right?

[geoff3dmg]

I meant 'stuck channels' as in channels in asterisk that haven't hung up. Yes red is kernel in the htop CPU display. Another thought that occurred to me, how is your firewall setup? Do you allow SIP connections from anywhere on the Internet? If so it might be a brute force attempt on your SIP accounts. That can cause a lot of CPU issues.

[richardroi]

Only allowed local network, no access outside.

'stuck channels' as in channels in asterisk that haven't hung up" how can I check?

[geoff3dmg]

Ah so you are using an E1/T1 card?

As for looking at your channels (this is a ViciBox v5 telephony server, also works fine with v6. I am unsure if this command is correct for v3 etc).

Code: Select all

asterisk -rx'core show channels'

shows you everything. I usually have about 100 channels open at any one time with 20 agents/server. I sometimes just look at SIP too, as I'm using VoIP.

Code: Select all

asterisk -rx'sip show channels'