Hi David, On 25/09/2024 15:35, David Prevot wrote:
Hi, After further investigations, I now believe we’re not able to reproduce the issue (the performance issues were actually random, and have other causes that we’re currently investigating). Emanuel, have you been able to test a kernel including the patch previously pointed by Salvatore and Florian? 34aaedb052cb4cb068cb19a34cf6d9cedb9af87f https://lore.kernel.org/all/20240910213553.839926-1-willemdebruijn.ker...@gmail.com/ I’ve built it last week following the team documentation. https://kernel-team.pages.debian.net/kernel-handbook/ch-common-tasks.html#id-1.6.6.4 It’s available at the following URL if needed. https://download.evolix.net/b3e804f0aaf78b4dc217213942c20805079fd160/linux-image-6.1.0-0.a.test-amd64-unsigned_6.1.106-3a~test_amd64.deb This is unfortunate to hear - we actually still have the issue with the patched kernel and can't see any improvements at all with speed nor reliability. Even a simple copy of the linux kernel from a nfs share to the homedir will interrupt after a while with an "Input/output error". Turning GSO off did not help as some suggested: echo options virtio_net gso=N >> /etc/modprobe.d/virtio.conf rmmod virtio_net && modprobe virtio_net As for turning LSO off on the hypervisor I would have to get a test host - it seems to have helped here: https://github.com/virtio-win/kvm-guest-drivers-windows/issues/1131 If there's something we can do in order of testing we should be able to do so. Regards, Emanuel
