High CPU usage ntopng Package - even on idle?

Rai80 · Oct 26, 2018, 6:26 PM

I experience the same since pfsense 2.4.4. Running directly on hardware. (No virtualization). CPU is on idle network utilization between 7-15%. When openening NTOP website and downloading it is climbing to 40-50%.

I also have problems starting NTOP (from services) after trying 3-4 times its finally starting. On reboot is not starting automatically. And after a few days its crashing:

pid 99675 (ntopng), uid 0: exited on signal 11 (core dumped)

Right now I uninstalled NTOP. Waiting for an update....

ramup · Oct 27, 2018, 7:31 AM

@Rai80: Thanks for sharing your experience. Due to my change in system setup, can you tell me how high the average CPU idle was with notpng under 2.4.3?

I had (have) the same problem with not instantly starting or later exiting notpng services from the beginning on. I installed watchdog so it restarts the process automatically when it exits due to an error.

Rai80 · Oct 27, 2018, 2:32 PM

On 2.4.3 is was about 2-5%. And with high traffic and webinterface open it was around 15-20%. After closing the webinterface it dropped to 10-15%.
So it seems much more CPU intensive after 2.4.4. and much less stable.

Hope there will be an update soon!

ramup · Oct 29, 2018, 8:49 AM

OK, are there any other users who can confirm this behaviour with high CPU usage of ntopng in IDLE mode? If yes, I would issue a bug in redmine.pfsense.org to examine this behaviour.

Btw. I can`t say that ntopng is less stable under 2.4.4 but since I use watchdog I do not check anymore how often the process exits. But the problem occured already under 2.4.3 and before and as far as I read this happens under FreeBSD regularly so I live with it because it is not really an issue when watchdog restarts the process immediately.

But the hig CPU usage is more a problem that I can`t really estimate (in comparison to 2.4.3) especially since my change of hardware with 2.4.4. Before I used XEON vCPUs and as they are more powerful the CPU usage was not an issue because the server was under a certain load anyway.

Jack150 · Oct 29, 2018, 9:12 PM

i had the same issue with ntopng on a virtualized server
cpu usage went up to 60% on an i5-6200u cpu

deleted the package and the cpu usage went back to 5-8%

ramup · Oct 30, 2018, 1:44 PM

@Jack150 Did you install ntopng under 2.4.4 or in a previous version?
Did 60% occur during idle or load? Were you monitoring while that high CPU usage?

Jack150 · Oct 30, 2018, 8:34 PM

I did install ntopng under 2.4.3 but shortly after the upgrade to 2.4.4 i got the issue.
it happend on idle and i was only watching @ system activity

Jack150 · Nov 4, 2018, 1:20 PM

i just did a reinstall of ntopng, it was running fine
but after i added another port to my bridge the cpu when back up

see screenshot of system activity:
https://ss.dutchs.nl/n4tRP2SBq9dG.png

Rai80 · Dec 18, 2018, 9:29 PM

Now in 2.4.4-p1 I reinstalled NTOPNG, and CPU usage has dropped and stays much more stable (low).
So seems to be fixed.

sadie · Dec 13, 2021, 8:37 AM

I'm using the latest nightly build of ntopng pro and finding it's using a large amount of CPU time constantly, even when the user interface isn't open in a web browser, and even when there's barely any traffic passing through the server.

My configuration file contains:

-G=/var/run/ntopng.pid
--disable-login=1
-F "mysql;localhost;ntopng;flows;username;password"
-w=3050

However the same still occurs even if I remove the mysql line (I suspected it was file IO of writing flows, but apparently now).

Any suggestions to track down what ntopng is doing would be greatly appreciated - the load average on the server I'm running it on is through the roof!

infovish31 · Dec 23, 2022, 4:32 PM

This post is deleted!