netdev - Re: [PATCH RFC] net: decrease the length of backlog queue immediately after it's detached from sk

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Message-ID: <570B9126.9080806@huawei.com>
Date:	Mon, 11 Apr 2016 19:57:26 +0800
From:	Yang Yingliang <yangyingliang@...wei.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	<netdev@...r.kernel.org>, <davem@...emloft.net>,
	Ding Tianhong <dingtianhong@...wei.com>
Subject: Re: [PATCH RFC] net: decrease the length of backlog queue immediately
 after it's detached from sk



On 2016/4/8 22:44, Eric Dumazet wrote:
> On Fri, 2016-04-08 at 19:18 +0800, Yang Yingliang wrote:
>
>> I expand  tcp_adv_win_scale and tcp_rmem. It has no effect.
>
> Try :
>
> echo -2 >/proc/sys/net/ipv4/tcp_adv_win_scale
>
> And restart your flows.
>
cat /proc/sys/net/ipv4/tcp_rmem
10240 2097152 10485760

echo 102400 20971520 104857600 > /proc/sys/net/ipv4/tcp_rmem
echo -2 >/proc/sys/net/ipv4/tcp_adv_win_scale

It seems has not effect.