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On Mon, Apr 23, 2018 at 03:31:20PM -0400, Konrad Rzeszutek Wilk wrote: > On Mon, Apr 23, 2018 at 01:34:52PM +0800, Jason Wang wrote: > > Hi all: > > > > This RFC implement packed ring layout. The code were tested with > > Tiwei's RFC V2 a thttps://lkml.org/lkml/2018/4/1/48. Some fixups and > > tweaks were needed on top of Tiwei's code to make it run. TCP

On Mon, Apr 23, 2018 at 03:31:20PM -0400, Konrad Rzeszutek Wilk wrote: > On Mon, Apr 23, 2018 at 01:34:52PM +0800, Jason Wang wrote: > > Hi all: > > > > This RFC implement packed ring layout. The code were tested with > > Tiwei's RFC V2 a thttps://lkml.org/lkml/2018/4/1/48. Some fixups and > > tweaks were needed on top of Tiwei's code to make it run. TCP

On 2018?05?21? 00:25, Wei Xu wrote: > On Wed, May 16, 2018 at 08:32:13PM +0800, Jason Wang wrote: >> Hi all: >> >> This RFC implement packed ring layout. The code were tested with >> Tiwei's RFC V3 ahttps://lkml.org/lkml/2018/4/25/34. Some fixups and >> tweaks were needed on top of Tiwei's code to make it run for event >> index. > Could you please

On 2018?07?16? 16:39, Michael S. Tsirkin wrote: > On Mon, Jul 16, 2018 at 11:28:03AM +0800, Jason Wang wrote: >> Hi all: >> >> This series implements packed virtqueues. The code were tested with >> Tiwei's guest driver series at https://patchwork.ozlabs.org/cover/942297/ >> >> >> Pktgen test for both RX and TX does not show obvious difference with

On 2018?07?16? 16:39, Michael S. Tsirkin wrote: > On Mon, Jul 16, 2018 at 11:28:03AM +0800, Jason Wang wrote: >> Hi all: >> >> This series implements packed virtqueues. The code were tested with >> Tiwei's guest driver series at https://patchwork.ozlabs.org/cover/942297/ >> >> >> Pktgen test for both RX and TX does not show obvious difference with

On Mon, Apr 23, 2018 at 01:34:52PM +0800, Jason Wang wrote: > Hi all: > > This RFC implement packed ring layout. The code were tested with > Tiwei's RFC V2 a thttps://lkml.org/lkml/2018/4/1/48. Some fixups and > tweaks were needed on top of Tiwei's code to make it run. TCP stream > and pktgen does not show obvious difference compared with split ring. I have to ask then

On Mon, Apr 23, 2018 at 10:59:43PM +0300, Michael S. Tsirkin wrote: > On Mon, Apr 23, 2018 at 03:31:20PM -0400, Konrad Rzeszutek Wilk wrote: > > On Mon, Apr 23, 2018 at 01:34:52PM +0800, Jason Wang wrote: > > > Hi all: > > > > > > This RFC implement packed ring layout. The code were tested with > > > Tiwei's RFC V2 a

On Wed, May 16, 2018 at 08:32:13PM +0800, Jason Wang wrote: > Hi all: > > This RFC implement packed ring layout. The code were tested with > Tiwei's RFC V3 ahttps://lkml.org/lkml/2018/4/25/34. Some fixups and > tweaks were needed on top of Tiwei's code to make it run for event > index. Could you please show the change based on Tiwei's code to easy other's test?

On Mon, Jul 16, 2018 at 11:28:03AM +0800, Jason Wang wrote: > Hi all: > > This series implements packed virtqueues. The code were tested with > Tiwei's guest driver series at https://patchwork.ozlabs.org/cover/942297/ > > > Pktgen test for both RX and TX does not show obvious difference with > split virtqueues. The main bottleneck is the guest Linux driver, since

On Wed, Jul 17, 2019 at 06:52:40AM -0400, Jason Wang wrote: > Hi all: > > This series implements packed virtqueues which were described > at [1]. In this version we try to address the performance regression > saw by V2. The root cause is packed virtqueue need more times of > userspace memory accesssing which turns out to be very > expensive. Thanks to the help of 7f466032dc9e

On Mon, Jul 16, 2018 at 05:46:33PM +0800, Jason Wang wrote: > > > On 2018?07?16? 16:39, Michael S. Tsirkin wrote: > > On Mon, Jul 16, 2018 at 11:28:03AM +0800, Jason Wang wrote: > > > Hi all: > > > > > > This series implements packed virtqueues. The code were tested with > > > Tiwei's guest driver series at

On 2018?07?16? 20:49, Michael S. Tsirkin wrote: > On Mon, Jul 16, 2018 at 05:46:33PM +0800, Jason Wang wrote: >> >> On 2018?07?16? 16:39, Michael S. Tsirkin wrote: >>> On Mon, Jul 16, 2018 at 11:28:03AM +0800, Jason Wang wrote: >>>> Hi all: >>>> >>>> This series implements packed virtqueues. The code were tested with >>>>

Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V3 ahttps://lkml.org/lkml/2018/4/25/34. Some fixups and tweaks were needed on top of Tiwei's code to make it run for event index. Pktgen reports about 20% improvement on PPS (event index is off). More testing is ongoing. Notes for tester: - Start from this version, vhost need qemu co-operation to work

Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V3 ahttps://lkml.org/lkml/2018/4/25/34. Some fixups and tweaks were needed on top of Tiwei's code to make it run for event index. Pktgen reports about 20% improvement on PPS (event index is off). More testing is ongoing. Notes for tester: - Start from this version, vhost need qemu co-operation to work

Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V2 a thttps://lkml.org/lkml/2018/4/1/48. Some fixups and tweaks were needed on top of Tiwei's code to make it run. TCP stream and pktgen does not show obvious difference compared with split ring. Changes from V2: - do not use & in checking desc_event_flags - off should be most significant bit -

Hi all: This RFC implement packed ring layout. The code were tested with Tiwei's RFC V2 a thttps://lkml.org/lkml/2018/4/1/48. Some fixups and tweaks were needed on top of Tiwei's code to make it run. TCP stream and pktgen does not show obvious difference compared with split ring. Changes from V2: - do not use & in checking desc_event_flags - off should be most significant bit -

Hi all: This series implements packed virtqueues. The code were tested with Tiwei's guest driver series at https://patchwork.ozlabs.org/cover/942297/ Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test

Hi all: This series implements packed virtqueues. The code were tested with Tiwei's guest driver series at https://patchwork.ozlabs.org/cover/942297/ Pktgen test for both RX and TX does not show obvious difference with split virtqueues. The main bottleneck is the guest Linux driver, since it can not stress vhost for a 100% CPU utilization. A full TCP benchmark is ongoing. Will test

Hi all: This series implements packed virtqueues which were described at [1]. In this version we try to address the performance regression saw by V2. The root cause is packed virtqueue need more times of userspace memory accesssing which turns out to be very expensive. Thanks to the help of 7f466032dc9e ("vhost: access vq metadata through kernel virtual address"), such overhead cold be

Hi all: This series implements packed virtqueues which were described at [1]. In this version we try to address the performance regression saw by V2. The root cause is packed virtqueue need more times of userspace memory accesssing which turns out to be very expensive. Thanks to the help of 7f466032dc9e ("vhost: access vq metadata through kernel virtual address"), such overhead cold be