netdev - Re: [i40e] regression on TCP stream and TCP maerts, kernel-4.12.0-0.rc2

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Date:   Wed, 31 May 2017 15:48:27 +0200
From:   Adrian Tomasov <atomasov@...hat.com>
To:     Alexander Duyck <alexander.duyck@...il.com>,
        Adam Okuliar <aokuliar@...hat.com>,
        Mitch Williams <mitch.a.williams@...el.com>,
        intel-wired-lan <intel-wired-lan@...ts.osuosl.org>
Cc:     Netdev <netdev@...r.kernel.org>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        Otto Sabart <osabart@...hat.com>,
        Jirka Hladky <jhladky@...hat.com>
Subject: Re: [i40e] regression on TCP stream and TCP maerts,
 kernel-4.12.0-0.rc2

On Tue, 2017-05-30 at 18:27 -0700, Alexander Duyck wrote:
> On Tue, May 30, 2017 at 8:41 AM, Alexander Duyck
> <alexander.duyck@...il.com> wrote:
> > 
> > On Tue, May 30, 2017 at 6:43 AM, Adam Okuliar <aokuliar@...hat.com>
> > wrote:
> > > 
> > > Hello,
> > > 
> > > we found regression on intel card(XL710) with i40e driver.
> > > Regression is
> > > about ~45%
> > > on TCP_STREAM and TCP_MAERTS test for IPv4 and IPv6. Regression
> > > was first
> > > visible in kernel-4.12.0-0.rc1.
> > > 
> > > More details about results you can see in uploaded images in
> > > bugzilla. [0]
> > > 
> > > 
> > > [0] https://bugzilla.kernel.org/show_bug.cgi?id=195923
> > > 
> > > 
> > > Best regards, / S pozdravom,
> > > 
> > > Adrián Tomašov
> > > Kernel Performance QE
> > > atomasov@...hat.com
> > 
> > I have added the i40e driver maintainer and the intel-wired-lan
> > mailing list so that we can make are developers aware of the issue.
> > 
> > Thanks.
> > 
> > - Alex
> 
> Adam,
> 
> We are having some issues trying to reproduce what you reported.
> 
> Can you provide some additional data. Specifically we would be
> looking
> for an "ethtool -i", and an "ethtool -S" for the port before and
> after
> the test. If you can attach it to the bugzilla that would be
> appreciated.
> 
> Thanks.
> 
> - Alex

Hello Alex,

requested files are updated in bugzilla.

If you have any questions about testing feel free to ask.


Best regards,

Adrian