similar to: [PATCH net-next] virtio-net: rx busy polling support

Displaying 20 results from an estimated 1000 matches similar to: "[PATCH net-next] virtio-net: rx busy polling support"

2014 Jul 16
9
[PATCH net-next V2 0/3] rx busy polling support for virtio-net
Hi all: This series introduces the support for rx busy polling support. This was useful for reduing the latency for a kvm guest. Patch 1-2 introduces helpers which is used for rx busy polling. Patch 3 implement the main function. Test was done between a kvm guest and an external host. Two hosts were connected through 40gb mlx4 cards. With both busy_poll and busy_read are set to 50 in guest, 1
2014 Jul 16
9
[PATCH net-next V2 0/3] rx busy polling support for virtio-net
Hi all: This series introduces the support for rx busy polling support. This was useful for reduing the latency for a kvm guest. Patch 1-2 introduces helpers which is used for rx busy polling. Patch 3 implement the main function. Test was done between a kvm guest and an external host. Two hosts were connected through 40gb mlx4 cards. With both busy_poll and busy_read are set to 50 in guest, 1
2014 Jul 20
1
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On Wed, Jul 16, 2014 at 02:21:47PM +0800, Jason Wang wrote: > Add basic support for rx busy polling. > > Test was done between a kvm guest and an external host. Two hosts were > connected through 40gb mlx4 cards. With both busy_poll and busy_read > are set to 50 in guest, 1 byte netperf tcp_rr shows 116% improvement: > transaction rate was increased from 9151.94 to 19787.37.
2014 Jul 20
1
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On Wed, Jul 16, 2014 at 02:21:47PM +0800, Jason Wang wrote: > Add basic support for rx busy polling. > > Test was done between a kvm guest and an external host. Two hosts were > connected through 40gb mlx4 cards. With both busy_poll and busy_read > are set to 50 in guest, 1 byte netperf tcp_rr shows 116% improvement: > transaction rate was increased from 9151.94 to 19787.37.
2014 Jul 16
0
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
Add basic support for rx busy polling. Test was done between a kvm guest and an external host. Two hosts were connected through 40gb mlx4 cards. With both busy_poll and busy_read are set to 50 in guest, 1 byte netperf tcp_rr shows 116% improvement: transaction rate was increased from 9151.94 to 19787.37. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at
2014 Jul 16
2
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On 07/16/2014 11:51 AM, Jason Wang wrote: > Add basic support for rx busy polling. > > Test was done between a kvm guest and an external host. Two hosts were > connected through 40gb mlx4 cards. With both busy_poll and busy_read > are set to 50 in guest, 1 byte netperf tcp_rr shows 116% improvement: > transaction rate was increased from 9151.94 to 19787.37. > > Cc: Rusty
2014 Jul 16
2
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On 07/16/2014 11:51 AM, Jason Wang wrote: > Add basic support for rx busy polling. > > Test was done between a kvm guest and an external host. Two hosts were > connected through 40gb mlx4 cards. With both busy_poll and busy_read > are set to 50 in guest, 1 byte netperf tcp_rr shows 116% improvement: > transaction rate was increased from 9151.94 to 19787.37. > > Cc: Rusty
2014 Jul 17
2
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On Thursday 17 July 2014 08:25 AM, Jason Wang wrote: > On 07/16/2014 04:38 PM, Varka Bhadram wrote: >> On 07/16/2014 11:51 AM, Jason Wang wrote: >>> Add basic support for rx busy polling. >>> >>> Test was done between a kvm guest and an external host. Two hosts were >>> connected through 40gb mlx4 cards. With both busy_poll and busy_read >>>
2014 Jul 17
2
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On Thursday 17 July 2014 08:25 AM, Jason Wang wrote: > On 07/16/2014 04:38 PM, Varka Bhadram wrote: >> On 07/16/2014 11:51 AM, Jason Wang wrote: >>> Add basic support for rx busy polling. >>> >>> Test was done between a kvm guest and an external host. Two hosts were >>> connected through 40gb mlx4 cards. With both busy_poll and busy_read >>>
2014 Jul 17
0
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On 07/16/2014 04:38 PM, Varka Bhadram wrote: > On 07/16/2014 11:51 AM, Jason Wang wrote: >> Add basic support for rx busy polling. >> >> Test was done between a kvm guest and an external host. Two hosts were >> connected through 40gb mlx4 cards. With both busy_poll and busy_read >> are set to 50 in guest, 1 byte netperf tcp_rr shows 116% improvement: >>
2014 Jul 17
0
[PATCH net-next V2 3/3] virtio-net: rx busy polling support
On 07/17/2014 11:27 AM, Varka Bhadram wrote: > > On Thursday 17 July 2014 08:25 AM, Jason Wang wrote: >> On 07/16/2014 04:38 PM, Varka Bhadram wrote: >>> On 07/16/2014 11:51 AM, Jason Wang wrote: >>>> Add basic support for rx busy polling. >>>> >>>> Test was done between a kvm guest and an external host. Two hosts were >>>>
2014 Jul 23
3
[PATCH v3 net-next 0/2] rx busy polling support for virtio-net
Hi all: This series introduces the support for rx busy polling support. This was useful for reduing the latency for a kvm guest. Instead of introducing new states and spinlocks, this series re-uses NAPI state to synchonrize between NAPI and busy polling. This grealy simplified the codes and reduce the overheads of spinlocks for normal NAPI fast path. Test was done between a kvm guest and an
2014 Jul 23
3
[PATCH v3 net-next 0/2] rx busy polling support for virtio-net
Hi all: This series introduces the support for rx busy polling support. This was useful for reduing the latency for a kvm guest. Instead of introducing new states and spinlocks, this series re-uses NAPI state to synchonrize between NAPI and busy polling. This grealy simplified the codes and reduce the overheads of spinlocks for normal NAPI fast path. Test was done between a kvm guest and an
2014 Jul 15
0
[PATCH net-next] virtio-net: rx busy polling support
On Tue, 2014-07-15 at 17:41 +0800, Jason Wang wrote: > Add basic support for rx busy polling. > > 1 byte netperf tcp_rr on mlx4 shows 116% improvement: the transaction > rate was increased from 9151.94 to 19787.37. This is a misleading changelog. You forgot to describe how you allowed busy polling, as it is not 'automatic' If not, this patch adds two spinlock/unlock pairs
2014 Oct 15
2
[RFC PATCH net-next 5/6] virtio-net: enable tx interrupt
On 10/15/2014 06:18 PM, Michael S. Tsirkin wrote: > On Wed, Oct 15, 2014 at 03:25:29PM +0800, Jason Wang wrote: >> > Orphan skb in ndo_start_xmit() breaks socket accounting and packet >> > queuing. This in fact breaks lots of things such as pktgen and several >> > TCP optimizations. And also make BQL can't be implemented for >> > virtio-net. >> >
2014 Oct 15
2
[RFC PATCH net-next 5/6] virtio-net: enable tx interrupt
On 10/15/2014 06:18 PM, Michael S. Tsirkin wrote: > On Wed, Oct 15, 2014 at 03:25:29PM +0800, Jason Wang wrote: >> > Orphan skb in ndo_start_xmit() breaks socket accounting and packet >> > queuing. This in fact breaks lots of things such as pktgen and several >> > TCP optimizations. And also make BQL can't be implemented for >> > virtio-net. >> >
2014 Oct 15
2
[RFC PATCH net-next 5/6] virtio-net: enable tx interrupt
Orphan skb in ndo_start_xmit() breaks socket accounting and packet queuing. This in fact breaks lots of things such as pktgen and several TCP optimizations. And also make BQL can't be implemented for virtio-net. This patch tries to solve this issue by enabling tx interrupt. To avoid introducing extra spinlocks, a tx napi was scheduled to free those packets. More tx interrupt mitigation
2014 Oct 15
2
[RFC PATCH net-next 5/6] virtio-net: enable tx interrupt
Orphan skb in ndo_start_xmit() breaks socket accounting and packet queuing. This in fact breaks lots of things such as pktgen and several TCP optimizations. And also make BQL can't be implemented for virtio-net. This patch tries to solve this issue by enabling tx interrupt. To avoid introducing extra spinlocks, a tx napi was scheduled to free those packets. More tx interrupt mitigation
2014 Oct 14
4
[PATCH RFC] virtio_net: enable tx interrupt
On newer hosts that support delayed tx interrupts, we probably don't have much to gain from orphaning packets early. Based on patch by Jason Wang. Note: this will likely degrade performance for hosts without event idx support. Various fallback options are available, including orphaning conditionally. Testing TBD. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> ---
2014 Oct 14
4
[PATCH RFC] virtio_net: enable tx interrupt
On newer hosts that support delayed tx interrupts, we probably don't have much to gain from orphaning packets early. Based on patch by Jason Wang. Note: this will likely degrade performance for hosts without event idx support. Various fallback options are available, including orphaning conditionally. Testing TBD. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> ---