netdev - Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

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Message-ID: <5665CF03.3030606@hpe.com>
Date:	Mon, 7 Dec 2015 10:25:07 -0800
From:	Rick Jones <rick.jones2@....com>
To:	Otto Sabart <osabart@...hat.com>,
	Alexander Duyck <alexander.duyck@...il.com>
Cc:	netdev@...r.kernel.org, Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jirka Hladky <jhladky@...hat.com>,
	Adam Okuliar <aokuliar@...hat.com>,
	Kamil Kolakowski <kkolakow@...hat.com>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>
Subject: Re: [BUG] net: performance regression on ixgbe (Intel 82599EB
 10-Gigabit NIC)

On 12/07/2015 03:28 AM, Otto Sabart wrote:
>> Hi Ota,
>>
>> It looks like there were a few changes that went through that could be
>> causing the regression.  The most obvious one that jumps out at me is commit
>> 72bfd32d2f84 ("ixgbe: disable LRO by default").  As such one thing you might
>> try doing is turning on LRO support via ethtool -k to see if that is the
>> issue you are seeing.
>>
>
> Hi Alex,
> enabling LRO resolved the problem.

So you had the same NIC and CPUs and whatnot on both sides?

rick jones

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