[Kernel-packages] [Bug 2089012] Re: virtio-net slowdown and error message ens3: bad gso: type: 1, size: 1448

2024-11-21 Thread Jon Kohler
Ok gotcha. Perhaps someone from Ubuntu side can help illuminate when that would be available, I'm not familiar with the release cadence here. We're certainly open to back-n-forth discussions here if this commit doesn't fix the issue, or other issues remain, but given what we went through on other

[Kernel-packages] [Bug 2089012] Re: virtio-net slowdown and error message ens3: bad gso: type: 1, size: 1448

2024-11-21 Thread Jon Kohler
@Hans - thanks - our messages crossed in flight. I've cross posted the tags where the fixing commit should live, as well as the bug ID that brought in the fixing commit. It looks like it was brought in as normal fit-n-finish backports, so this regression should find it self-solving (knock on wood!)

[Kernel-packages] [Bug 2089012] Re: virtio-net slowdown and error message ens3: bad gso: type: 1, size: 1448

2024-11-21 Thread Jon Kohler
Builds with the suspect commit as mentioned above: jon@C02F13YVQ05N jammy % git tag --contains 34192ba1338f Ubuntu-5.15.0-125.135 Ubuntu-5.15.0-126.136 Ubuntu-5.15.0-127.137 Ubuntu-lowlatency-5.15.0-125.135 Ubuntu-lowlatency-5.15.0-126.136 Ubuntu-lowlatency-5.15.0-127.137 Builds with what should f

[Kernel-packages] [Bug 2089012] Re: virtio-net slowdown and error message ens3: bad gso: type: 1, size: 1448

2024-11-21 Thread Jon Kohler
Checked out the jammy source jon@C02F13YVQ05N jammy % git clone git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy jon@C02F13YVQ05N jammy % git checkout Ubuntu-5.15.0-126.136 jon@C02F13YVQ05N jammy % git log --oneline -n 1 HEAD 87cad896a075 (HEAD, tag: Ubuntu-5.15.0-126.136) U

[Kernel-packages] [Bug 2089012] Re: virtio-net slowdown and error message ens3: bad gso: type: 1, size: 1448

2024-11-21 Thread Jon Kohler
Hey Jon from Nutanix AHV R&D here - We also see this issue on RHEL, SLE15, and vanilla kernels. In all three of those cases, the problem wasn't with AHV, but with a problematic set of backport that was tagged as a CVE, but caused a GSO-based performance regression. This can be reproduced on non-Nut

[Kernel-packages] [Bug 2089012] Re: virtio-net slowdown and error message ens3: bad gso: type: 1, size: 1448

2024-11-21 Thread Jon Kohler
Hey Jon from Nutanix AHV R&D here - We also see this issue on RHEL, SLE15, and vanilla kernels. In all three of those cases, the problem wasn't with AHV, but with a problematic set of backport that was tagged as a CVE, but caused a GSO-based performance regression. This can be reproduced on non-Nut