On 03/10/2016 02:48 PM, Michael Rapoport wrote: > Hi Greg, > >> > Greg Kurz <gkurz@xxxxxxxxxxxxxxxxxx> wrote on 03/09/2016 09:26:45 PM: >>> > > On Fri, 4 Mar 2016 06:24:50 -0500 >>> > > Jason Wang <jasowang@xxxxxxxxxx> wrote: >> > >>> > > This series tries to add basic busy polling for vhost net. The idea is >>> > > simple: at the end of tx/rx processing, busy polling for new tx added >>> > > descriptor and rx receive socket for a while. The maximum number of >>> > > time (in us) could be spent on busy polling was specified ioctl. >>> > > >>> > > Test A were done through: >>> > > >>> > > - 50 us as busy loop timeout >>> > > - Netperf 2.6 >>> > > - Two machines with back to back connected mlx4 >> > >> > Hi Jason, >> > >> > Could this also improve performance if both VMs are >> > on the same host system ? > I've experimented a little with Jason's patches and guest-to-guest netperf > when both guests were on the same host, and I saw improvements for that > case. > Good to know this, I haven't tested this before but from the codes, it should work for VM2VM case too. Thanks a lot for the testing. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
