On 2019/1/27 上午8:31, Michael S. Tsirkin wrote:
On Sat, Jan 26, 2019 at 02:37:08PM -0800, David Miller wrote:
From: Jason Wang
Date: Wed, 23 Jan 2019 17:55:52 +0800
This series tries to access virtqueue metadata through kernel virtual
address instead of copy_user() friends since they had too
From: Jason Wang
Date: Wed, 23 Jan 2019 17:55:52 +0800
> This series tries to access virtqueue metadata through kernel virtual
> address instead of copy_user() friends since they had too much
> overheads like checks, spec barriers or even hardware feature
> toggling.
>
> Test shows about 24%
On Sat, Jan 26, 2019 at 02:37:08PM -0800, David Miller wrote:
> From: Jason Wang
> Date: Wed, 23 Jan 2019 17:55:52 +0800
>
> > This series tries to access virtqueue metadata through kernel virtual
> > address instead of copy_user() friends since they had too much
> > overheads like checks, spec
From: "Michael S. Tsirkin"
Date: Wed, 23 Jan 2019 08:58:07 -0500
> On Wed, Jan 23, 2019 at 05:55:52PM +0800, Jason Wang wrote:
>> This series tries to access virtqueue metadata through kernel virtual
>> address instead of copy_user() friends since they had too much
>> overheads like checks, spec
On Wed, Jan 23, 2019 at 05:55:52PM +0800, Jason Wang wrote:
> This series tries to access virtqueue metadata through kernel virtual
> address instead of copy_user() friends since they had too much
> overheads like checks, spec barriers or even hardware feature
> toggling.
>
> Test shows about 24%
This series tries to access virtqueue metadata through kernel virtual
address instead of copy_user() friends since they had too much
overheads like checks, spec barriers or even hardware feature
toggling.
Test shows about 24% improvement on TX PPS. It should benefit other
cases as well.
Changes
