Bug#1079684: still issues in linux 6.1.106-3

[Salvatore Bonaccorso <carnil@debian.org>]

Hi David, hi Emanuel,

On Wed, Sep 18, 2024 at 08:29:54AM +0200, David Prévot wrote:
> Control: clone -1 -2
> Control: reopen -2
> Control: found -2 linux/6.1.106-3
> Control: retitle -2 Performance issues on VM (virtio)
> 
> Hi,
> 
> Le Mon, Sep 16, 2024 at 11:37:07AM +0000, Kocher Emanuel, Bedag a écrit :
> […]
> > We still see issues with linux/6.1.106-3 in combination with virtio.
> 
> Thanks for the feedback.
> 
> > Network performance is down to ~4 Mb/s measured with iperf3 instead of 
> > ~8 Gb/s (with linux/6.1.99-1 respectively 6.1.0-23-amd64). It is 
> > reproducible and booting the previous kernel resolves the issue.
> 
> Our network team also noticed performance issues, roughly 20 to 30%
> increase speed on packages download once we reverted to 6.1.0-23-amd64
> on a mirror we host. Not sure it’s exactly the same issue as the one
> initially reported, hence the clone, but I agree there is still an issue
> with the current stable kernel.

Thanks for reporting back. I will try to reproduce it so we can test
against newer 6.1.y kernels as well. Do you have reproducers available
to show it?

Regards,
Salvatore