Re: [External] Re: [PATCH v2 18/20] migration/multifd: Enable set packet size migration option.

[Hao Xiang]

On Wed, Dec 13, 2023 at 9:33 AM Fabiano Rosas <farosas@suse.de> wrote:
>
> Hao Xiang <hao.xiang@bytedance.com> writes:
>
> > During live migration, if the latency between sender and receiver
> > is high but bandwidth is high (a long and fat pipe), using a bigger
> > packet size can help reduce migration total time. In addition, Intel
> > DSA offloading performs better with a large batch task. Providing an
> > option to set the packet size is useful for performance tuning.
> >
> > Set the option:
> > migrate_set_parameter multifd-packet-size 512
>
> This should continue being bytes, we just needed to have code enforcing
> it to be a multiple of page size at migrate_params_check().
>

OK. I switched back to use bytes and enforced multiple of page size at
migrate_params_check().