From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cong Wang <xiyou.wangcong@gmail.com>
Subject: Re: TSQ accounting skb->truesize degrades throughput for large
 packets
Date: Mon, 9 Sep 2013 05:28:50 +0000 (UTC)
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On Fri, 06 Sep 2013 at 17:00 GMT, Eric Dumazet <eric.dumazet@gmail.com> wrote:
> On Fri, 2013-09-06 at 17:36 +0100, Zoltan Kiss wrote:
>
>> So I guess it would be good to revisit the default value of this 
>> setting.
>
> If ixgbe requires 3 TSO packets in TX ring to get line rate, you also
> can tweak dev->gso_max_size from 65535 to 64000.
>

We observe similar regression on ixgbe driver, also virtio_net driver.