Re: Re: Re: EEVDF/vhost regression (bisected to 86bfbb7ce4f6 sched/fair: Add lag based placement)

[Jason Wang]

On Tue, Dec 12, 2023 at 12:54 AM Michael S. Tsirkin <mst@xxxxxxxxxx> wrote:
>
> On Mon, Dec 11, 2023 at 03:26:46PM +0800, Jason Wang wrote:
> > > Try reducing the VHOST_NET_WEIGHT limit and see if that improves things any?
> >
> > Or a dirty hack like cond_resched() in translate_desc().
>
> what do you mean, exactly?

Ideally it should not matter, but Tobias said there's an unexpectedly
long time spent on translate_desc() which may indicate that the
might_sleep() or other doesn't work for some reason.

Thanks

>
> --
> MST
>