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Date:	Wed, 16 Jul 2014 10:44:46 +0800
From:	Jason Wang <>
To:	Eric Dumazet <>
CC:,,,,, Vlad Yasevich <>
Subject: Re: [PATCH net-next] virtio-net: rx busy polling support

On 07/15/2014 06:21 PM, Eric Dumazet wrote:
> 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 in fast path.

> Also, it looks like you could split this in smaller patches.
> virtnet_napi_disable_all() & virtnet_napi_enable_all() could be added in
> a separate patch for example.

Sure, will split this patch into smaller ones in V2.

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