* [PATCH V3 0/2] vhost_net polling optimization
@ 2016-06-01 5:56 Jason Wang
0 siblings, 0 replies; 6+ messages in thread
From: Jason Wang @ 2016-06-01 5:56 UTC (permalink / raw)
To: mst, kvm, virtualization, netdev, linux-kernel
Hi:
This series tries to optimize vhost_net polling at two points:
- Stop rx polling for reduicng the unnecessary wakeups during
handle_rx().
- Conditonally enable tx polling for reducing the unnecessary
traversing and spinlock touching.
Test shows about 17% improvement on rx pps.
Please review
Changes from V2:
- Don't enable rx vq if we meet an err or rx vq is empty
Changes from V1:
- use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open
coding.
- Add a new patch for conditionally enable tx polling.
Jason Wang (2):
vhost_net: stop polling socket during rx processing
vhost_net: conditionally enable tx polling
drivers/vhost/net.c | 67 ++++++++++++++++++++++++++++-------------------------
1 file changed, 36 insertions(+), 31 deletions(-)
--
1.8.3.1
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH V3 0/2] vhost_net polling optimization
2016-06-02 19:08 ` David Miller
(?)
(?)
@ 2016-06-03 13:03 ` Michael S. Tsirkin
-1 siblings, 0 replies; 6+ messages in thread
From: Michael S. Tsirkin @ 2016-06-03 13:03 UTC (permalink / raw)
To: David Miller; +Cc: jasowang, kvm, virtualization, netdev, linux-kernel
On Thu, Jun 02, 2016 at 12:08:06PM -0700, David Miller wrote:
> From: Jason Wang <jasowang@redhat.com>
> Date: Wed, 1 Jun 2016 01:56:32 -0400
>
> > This series tries to optimize vhost_net polling at two points:
> >
> > - Stop rx polling for reduicng the unnecessary wakeups during
> > handle_rx().
> > - Conditonally enable tx polling for reducing the unnecessary
> > traversing and spinlock touching.
> >
> > Test shows about 17% improvement on rx pps.
> >
> > Please review
> >
> > Changes from V2:
> > - Don't enable rx vq if we meet an err or rx vq is empty
> > Changes from V1:
> > - use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open
> > coding.
> > - Add a new patch for conditionally enable tx polling.
>
> Michael, please review this patch series.
>
> Thanks.
thanks for the reminder, I plan to review next week.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH V3 0/2] vhost_net polling optimization
2016-06-02 19:08 ` David Miller
(?)
@ 2016-06-03 13:03 ` Michael S. Tsirkin
-1 siblings, 0 replies; 6+ messages in thread
From: Michael S. Tsirkin @ 2016-06-03 13:03 UTC (permalink / raw)
To: David Miller; +Cc: netdev, linux-kernel, kvm, virtualization
On Thu, Jun 02, 2016 at 12:08:06PM -0700, David Miller wrote:
> From: Jason Wang <jasowang@redhat.com>
> Date: Wed, 1 Jun 2016 01:56:32 -0400
>
> > This series tries to optimize vhost_net polling at two points:
> >
> > - Stop rx polling for reduicng the unnecessary wakeups during
> > handle_rx().
> > - Conditonally enable tx polling for reducing the unnecessary
> > traversing and spinlock touching.
> >
> > Test shows about 17% improvement on rx pps.
> >
> > Please review
> >
> > Changes from V2:
> > - Don't enable rx vq if we meet an err or rx vq is empty
> > Changes from V1:
> > - use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open
> > coding.
> > - Add a new patch for conditionally enable tx polling.
>
> Michael, please review this patch series.
>
> Thanks.
thanks for the reminder, I plan to review next week.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH V3 0/2] vhost_net polling optimization
2016-06-01 5:56 Jason Wang
@ 2016-06-02 19:08 ` David Miller
0 siblings, 0 replies; 6+ messages in thread
From: David Miller @ 2016-06-02 19:08 UTC (permalink / raw)
To: jasowang; +Cc: mst, kvm, virtualization, netdev, linux-kernel
From: Jason Wang <jasowang@redhat.com>
Date: Wed, 1 Jun 2016 01:56:32 -0400
> This series tries to optimize vhost_net polling at two points:
>
> - Stop rx polling for reduicng the unnecessary wakeups during
> handle_rx().
> - Conditonally enable tx polling for reducing the unnecessary
> traversing and spinlock touching.
>
> Test shows about 17% improvement on rx pps.
>
> Please review
>
> Changes from V2:
> - Don't enable rx vq if we meet an err or rx vq is empty
> Changes from V1:
> - use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open
> coding.
> - Add a new patch for conditionally enable tx polling.
Michael, please review this patch series.
Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH V3 0/2] vhost_net polling optimization
@ 2016-06-02 19:08 ` David Miller
0 siblings, 0 replies; 6+ messages in thread
From: David Miller @ 2016-06-02 19:08 UTC (permalink / raw)
To: jasowang; +Cc: netdev, virtualization, linux-kernel, kvm, mst
From: Jason Wang <jasowang@redhat.com>
Date: Wed, 1 Jun 2016 01:56:32 -0400
> This series tries to optimize vhost_net polling at two points:
>
> - Stop rx polling for reduicng the unnecessary wakeups during
> handle_rx().
> - Conditonally enable tx polling for reducing the unnecessary
> traversing and spinlock touching.
>
> Test shows about 17% improvement on rx pps.
>
> Please review
>
> Changes from V2:
> - Don't enable rx vq if we meet an err or rx vq is empty
> Changes from V1:
> - use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open
> coding.
> - Add a new patch for conditionally enable tx polling.
Michael, please review this patch series.
Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH V3 0/2] vhost_net polling optimization
@ 2016-06-01 5:56 Jason Wang
2016-06-02 19:08 ` David Miller
0 siblings, 1 reply; 6+ messages in thread
From: Jason Wang @ 2016-06-01 5:56 UTC (permalink / raw)
To: mst, kvm, virtualization, netdev, linux-kernel; +Cc: Jason Wang
Hi:
This series tries to optimize vhost_net polling at two points:
- Stop rx polling for reduicng the unnecessary wakeups during
handle_rx().
- Conditonally enable tx polling for reducing the unnecessary
traversing and spinlock touching.
Test shows about 17% improvement on rx pps.
Please review
Changes from V2:
- Don't enable rx vq if we meet an err or rx vq is empty
Changes from V1:
- use vhost_net_disable_vq()/vhost_net_enable_vq() instead of open
coding.
- Add a new patch for conditionally enable tx polling.
Jason Wang (2):
vhost_net: stop polling socket during rx processing
vhost_net: conditionally enable tx polling
drivers/vhost/net.c | 67 ++++++++++++++++++++++++++++-------------------------
1 file changed, 36 insertions(+), 31 deletions(-)
--
1.8.3.1
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-06-03 13:03 UTC | newest]
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2016-06-01 5:56 Jason Wang
2016-06-02 19:08 ` David Miller
2016-06-02 19:08 ` David Miller
2016-06-03 13:03 ` Michael S. Tsirkin
2016-06-03 13:03 ` Michael S. Tsirkin
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