netdev - Re: [PATCH] net: less interrupt masking in NAPI

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Message-ID: <547ED728.2010703@huawei.com>
Date:	Wed, 3 Dec 2014 17:26:00 +0800
From:	Yang Yingliang <yangyingliang@...wei.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	David Miller <davem@...emloft.net>, <netdev@...r.kernel.org>,
	<willemb@...gle.com>
Subject: Re: [PATCH] net: less interrupt masking in NAPI

On 2014/12/3 15:41, Eric Dumazet wrote:
> On Wed, 2014-12-03 at 15:31 +0800, Yang Yingliang wrote:
> 
>> This patch can resolve my performance problem.
>> Will/Can this patch queue for stable ?
> 
> Hmm.. please give us more details, I am surprised it can have
> a big impact.
> 
> 
> 
> 
Before this patch, when a large network flow arrives, some other processes
response slowly or even don't response because the cpu is dealing with softirq.

After this patch, under pressure, much more softirq is doing in ksoftirqd. The other
processes be scheduled.

My system has dual core.

Regards,
Yang

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