linux-kernel - Re: [PATCH net-next V2 0/3] rx busy polling support for virtio-net

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Message-ID: <53C7744E.60806@redhat.com>
Date:	Thu, 17 Jul 2014 14:59:26 +0800
From:	Jason Wang <jasowang@...hat.com>
To:	David Miller <davem@...emloft.net>
CC:	rusty@...tcorp.com.au, mst@...hat.com,
	virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next V2 0/3] rx busy polling support for virtio-net

On 07/17/2014 02:21 PM, David Miller wrote:
> From: Jason Wang <jasowang@...hat.com>
> Date: Wed, 16 Jul 2014 14:21:44 +0800
>
>> 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 byte netperf tcp_rr shows 116% improvement:
>> transaction rate was increased from 9151.94 to 19787.37.
>>
>> Changes from V1:
>> - split the patch info smaller ones
>> - add more details about test setup/configuration
>>
>> Please review.
> Looks like you can make some minor adjustments based upon review, and
> anyways I'd like to wait for Michael to get back and review a change
> of this nature.
>
> Thanks.

Ok, I will wait for Michael's comments and then post V3.

Thanks
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