linux-kernel - Re: [PATCH net-next 0/9] TX used ring batched updating for vhost

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Message-Id: <20180722.094412.532906090262121741.davem@davemloft.net>
Date:   Sun, 22 Jul 2018 09:44:12 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     mst@...hat.com
Cc:     jasowang@...hat.com, netdev@...r.kernel.org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 0/9] TX used ring batched updating for vhost

From: "Michael S. Tsirkin" <mst@...hat.com>
Date: Sun, 22 Jul 2018 17:37:05 +0300

> On Fri, Jul 20, 2018 at 08:15:12AM +0800, Jason Wang wrote:
>> Hi:
>> 
>> This series implement batch updating of used ring for TX. This help to
>> reduce the cache contention on used ring. The idea is first split
>> datacopy path from zerocopy, and do only batching for datacopy. This
>> is because zercopy had already supported its own batching.
>> 
>> TX PPS was increased 25.8% and Netperf TCP does not show obvious
>> differences.
>> 
>> The split of datapath will also be helpful for future implementation
>> like in order completion.
>> 
>> Please review.
>> 
>> Thanks
> 
> Acked-by: Michael S. Tsirkin <mst@...hat.com>
> 
> I'm very happy with the split, the mixed data path became hard to
> maintain.

Thanks for reviewing.

Series applied, thanks everyone.