Control: tags -1 + moreinfo 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
