On Mon, May 13, 2019 at 08:46:19PM +0800, Jason Wang wrote: > > On 2019/5/13 下午6:05, Jason Wang wrote: > > > > On 2019/5/10 下午8:58, Stefano Garzarella wrote: > > > The RX buffer size determines the memory consumption of the > > > vsock/virtio guest driver, so we make it tunable through > > > a module parameter. > > > > > > The size allowed are between 4 KB and 64 KB in order to be > > > compatible with old host drivers. > > > > > > Suggested-by: Stefan Hajnoczi <stefa...@redhat.com> > > > Signed-off-by: Stefano Garzarella <sgarz...@redhat.com> > > > > > > I don't see much value of doing this through kernel command line. We > > should deal with them automatically like what virtio-net did. Or even a > > module parameter is better. > > > > Thanks > > > Sorry, I misread the patch. But even module parameter is something not > flexible enough. We should deal with them transparently. >
Okay, I'll try to understand how we can automatically adapt the RX buffer size. Since the flow is stream based, the receiver doesn't know the original packet size. Maybe I can reuse the EWMA approach to understand if the buffers are entirely filled or not. In that case I can increase (e.g. double) or decrease the size. I'll try to do it! Thanks, Stefano
