New Build - 09/10/2022 - r50146

Post new topic   Reply to topic    DD-WRT Forum Index -> Atheros WiSOC based Hardware
Goto page Previous  1, 2, 3
Author Message
DD-WRT-Nub
DD-WRT Novice


Joined: 26 Sep 2016
Posts: 24

PostPosted: Fri Sep 16, 2022 4:25    Post subject: Reply with quote
Router: Netgear R7800 (272-12536-01)
Firmware: DD-WRT v3.0-r50146 std (09/10/22) updated via CLI
Kernel: Linux 4.9.327 #1200 SMP Sat Sep 10 13:46:42 +07 2022 armv7l
Previous:DD-WRT v3.0-r47822 std (12/09/21)
Reset: nvram erase && reboot
Mode & Uptime: Gateway running OK 4 days
Errors: runs fine
Settings: Ignore WAN DNS/disabled SFE/WPA2 AES with Custom Config: basic_rates=60 120 240 supported_rates=60 90 120 180 240 360 480 540/SmartDNS/Additional Dnsmasq Options for minor domain-blocking/Port Forwarding/HTB Cake QoS/Elegant Dark Theme

Thanks to the developers and all contributors!


2.4GHz band settings since some people seem to have issues:

Sponsor
sumbuddie
DD-WRT User


Joined: 28 Mar 2009
Posts: 74

PostPosted: Fri Sep 16, 2022 21:02    Post subject: Reply with quote
tatsuya46 wrote:

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.
dale_gribble39
DD-WRT Guru


Joined: 11 Jun 2022
Posts: 1899

PostPosted: Sat Sep 17, 2022 4:59    Post subject: Reply with quote
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

<fact>code knows no gender</fact>

This is me, knowing I've ruffled your feathers, and not giving a ****
Some people are still hard-headed.

--------------------------------------
Mac Pro (Mid 2012) - Two 2.4GHz 6-Core Intel Xeon E5645 processors 64GB 1333MHz DDR3 ECC SDRAM OpenSUSE Leap 15.5
sumbuddie
DD-WRT User


Joined: 28 Mar 2009
Posts: 74

PostPosted: Sat Sep 17, 2022 21:43    Post subject: Reply with quote
dale_gribble39 wrote:
Switch mode disables multicast. IGMP snooping is not necessarily of any value.


Thanks for the info. I've got questions, but they're better served in their own thread.
Goto page Previous  1, 2, 3 Display posts from previous:    Page 3 of 3
Post new topic   Reply to topic    DD-WRT Forum Index -> Atheros WiSOC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum