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Bug#1059390: linux-image-6.5.0-5-amd64: Large number of missed packets reported by "e1000e" driver

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Hi Matthias,

On Sun, Dec 24, 2023 at 10:39:22AM +0000, Matthias Scheler wrote:
> Package: src:linux
> Version: 6.5.13-1
> Severity: normal
> Tags: upstream
> 
> Dear Maintainer,
> 
> I'm using a Shuttle DS20UV2 as my broadband router and firewall. After
> updating it from Debian 12.4 to Trixie yesterday one of its network
> interfaces started reporting a large and ever increasing number of
> missed packets:
> 
> > ip -s link show eno1
> 3: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1508 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
>     link/ether 80:ee:73:XX:XX:XX brd ff:ff:ff:ff:ff:ff
>     RX:  bytes packets errors dropped  missed   mcast
>      991043595  846955      0       0    3691       0
>     TX:  bytes packets errors dropped carrier collsns
>      890811461  793387      0       0       0       0
>     altname enp0s31f6
> 
> The number was much larger before I rebooted the machine to
> test out some kernel parameter changes.
> 
> I originally had similar problems with Debian 12.x. But increasing
> the RX ring size from 256 to 1024 fixed the problem. Under Trixie
> neither this nor increasing the RX ring size to the maximum of 4096
> helps. I also tried to restrict the maximum C-state to 3 (down
> from 9) which again didn't help.
> 
> The interface in question is using an MTU of 1508 bytes to allow
> an MTU of 1500 bytes on PPPoE session running over it. The broadband
> link's maximum speed is 1 Gbit/sec. As such the incoming packet rate
> can be high at times.
> 
> There is another ehternet interface in this machine which is driven
> by the "igc" driver. It reports zero missed packets but it also not
> using mini jumbo frames.

And I assume you have the same as well with 6.6.8-1 from the newest
stable series as present in unstable?

If so I guess you are in a good position to report that upstream, but
please keep this downstream bug as well in the loop (or ping it about
updates).

Regards,
Salvatore

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Bug#1059390: linux-image-6.5.0-5-amd64: Large number of missed packets reported by "e1000e" driver Salvatore Bonaccorso <carnil@debian.org> - 2023-12-28 10:40 +0100
  Processed: Re: Bug#1059390: linux-image-6.5.0-5-amd64: Large  number of missed packets reported by "e1000e" driver "Debian Bug Tracking System" <owner@bugs.debian.org> - 2023-12-28 10:40 +0100
  Bug#1059390: linux-image-6.5.0-5-amd64: Large number of missed packets reported by "e1000e" driver Matthias Scheler <tron@zhadum.org.uk> - 2023-12-28 13:50 +0100

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