Re: [PATCH net-next v5 0/4] net: vhost: improve performance when enable busyloop

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On 2018年07月11日 11:49, Tonghao Zhang wrote:
On Wed, Jul 11, 2018 at 10:56 AM Jason Wang <jasowang@xxxxxxxxxx> wrote:


On 2018年07月04日 12:31, xiangxia.m.yue@xxxxxxxxx wrote:
From: Tonghao Zhang <xiangxia.m.yue@xxxxxxxxx>

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


Thanks

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