ignore that cpu usage on gui, its so inaccurate. instead telnet/ssh login to the router, issue "top" command, look at usage there
Thanks tatsuya46!
Did as you suggested and got more details:
Load Average is still 1.03, 1.05, 1.01
but the culprit is:
3 2 root RW 0 0.0 0 96.6 [ksoftirqd/0]
Something is generating excessive IRQs it seems. Everything else looks fine.
dale_gribble39 wrote:
Turn off WAN traffic counter (ttraff?) and disable SFE if you have it enabled. Neither are required for using switch / router mode.
Thanks dale_gribble39
Did that and even disabled SSH and enabled Telnet instead - no improvement.
Will try a reset/reconfigure later.
Update:
No improvement after a factory reset/reconfigure.
Issue persisted with the latest build (09-15-2022-r50176) as well.
Removed from my startup commands:
swconfig dev switch0 set igmp_snooping 1
and it appears to have stabilized. Re-issuing the command via Telnet (along with "swconfig dev switch0 set apply") will bring the load up again (ksoftirqd).
Without rebooting, issuing the disable command via Telnet:
swconfig dev switch0 set igmp_snooping 0
swconfig dev switch0 set apply
and it's under control again.
I have igmp snooping enabled on the network page, so hopefully that will suffice - I'll have to check my IPTV devices.
Update 2:
with IGMP Snooping disabled on the switch, my network suffers. Once I enable IGMP Snooping via swconfig, all is well on the network, but the load spikes to 100% again. I'll have to try older builds to see if this was present then.
Switch mode disables multicast. IGMP snooping is not necessarily of any value. _________________ "The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep." - Robert Frost
"I am one of the noticeable ones - notice me" - Dale Frances McKenzie Bozzio