netdev - Re: [PATCH net-next v2] tcp: reduce cpu usage under tcp memory pressure when SO

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Message-ID: <1439304576.1084.24.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Tue, 11 Aug 2015 07:49:36 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jason Baron <jbaron@...mai.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2] tcp: reduce cpu usage under tcp memory
 pressure when SO_SNDBUF is set

On Tue, 2015-08-11 at 14:38 +0000, Jason Baron wrote:
> From: Jason Baron <jbaron@...mai.com>

> In my testing, this brought a single threaad's cpu usage down from 100% to ~1%
> while maintaining the same level of throughput.
> 

Hi Jason. Could you give more details on this test ?

How many flows are competing ?



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