On Wed, Jul 11, 2018 at 01:12:59PM +0800, Jason Wang wrote: > > > On 2018年07月11日 11:49, Tonghao Zhang wrote: > > On Wed, Jul 11, 2018 at 10:56 AM Jason Wang <[email protected]> wrote: > > > > > > > > > On 2018年07月04日 12:31, [email protected] wrote: > > > > From: Tonghao Zhang <[email protected]> > > > > > > > > This patches improve the guest receive and transmit performance. > > > > On the handle_tx side, we poll the sock receive queue at the same time. > > > > handle_rx do that in the same way. > > > > > > > > For more performance report, see patch 4. > > > > > > > > v4 -> v5: > > > > fix some issues > > > > > > > > v3 -> v4: > > > > fix some issues > > > > > > > > v2 -> v3: > > > > This patches are splited from previous big patch: > > > > http://patchwork.ozlabs.org/patch/934673/ > > > > > > > > Tonghao Zhang (4): > > > > vhost: lock the vqs one by one > > > > net: vhost: replace magic number of lock annotation > > > > net: vhost: factor out busy polling logic to vhost_net_busy_poll() > > > > net: vhost: add rx busy polling in tx path > > > > > > > > drivers/vhost/net.c | 108 > > > > ++++++++++++++++++++++++++++---------------------- > > > > drivers/vhost/vhost.c | 24 ++++------- > > > > 2 files changed, 67 insertions(+), 65 deletions(-) > > > > > > > Hi, any progress on the new version? > > > > > > I plan to send a new series of packed virtqueue support of vhost. If you > > > plan to send it soon, I can wait. Otherwise, I will send my series. > > I rebase the codes. and find there is no improvement anymore, the > > patches of makita may solve the problem. jason you may send your > > patches, and I will do some research on busypoll. > > I see. Maybe you can try some bi-directional traffic. > > Btw, lots of optimizations could be done for busy polling. E.g integrating > with host NAPI busy polling or a 100% busy polling vhost_net. You're welcome > to work or propose new ideas. > > Thanks
It seems clear we do need adaptive polling. The difficulty with NAPI polling is it can't access guest memory easily. But maybe get_user_pages on the polled memory+NAPI polling can work. > > > > > Thanks _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
