From owner-freebsd-stable@freebsd.org  Fri Jul 24 15:26:00 2015
Return-Path: <owner-freebsd-stable@freebsd.org>
Delivered-To: freebsd-stable@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id A078B9AAB61
 for <freebsd-stable@mailman.ysv.freebsd.org>;
 Fri, 24 Jul 2015 15:26:00 +0000 (UTC)
 (envelope-from nparhar@gmail.com)
Received: from mail-pa0-x236.google.com (mail-pa0-x236.google.com
 [IPv6:2607:f8b0:400e:c03::236])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 718DB1580;
 Fri, 24 Jul 2015 15:26:00 +0000 (UTC)
 (envelope-from nparhar@gmail.com)
Received: by pachj5 with SMTP id hj5so15958180pac.3;
 Fri, 24 Jul 2015 08:25:59 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=date:from:to:cc:subject:message-id:mail-followup-to:references
 :mime-version:content-type:content-disposition:in-reply-to
 :user-agent; bh=oo1daHER6Wp1W+bm2FepRIx3p3+tNDU1gYvFkl9kczc=;
 b=Bq5Vb2jxKV+qqqQwQ80ihP9SGl56ypns+tzj5xFgxjoyWwBnm7NHsGM/FXbNo6XSmK
 G76JdgMWTe0MJQdbfk/8bKJAgoV/Xfof+Ge++Ki3gpzoN762W1W2NVnPxeC/aJ44N3pj
 s4w7VPne1jzqjNvEm9heCEupGqlx2Jh9Gtbe2TgCi9QvHNTG6pKk3X+WN4mUKFknaBvT
 NbbMswCqjRKZ5g2URAAbQzxW6DUsItTZYLus/UxlPB/EVXaaQc8ordAz5ZbCFLvkHpRm
 2mvi/CCPXeh6G2YJfSX/KTp2eRwxIgj/f/E4fMeZnGQUTN9JkUS0qIpelFLDvPR5ejgm
 qRGQ==
X-Received: by 10.70.131.73 with SMTP id ok9mr32204883pdb.109.1437751559909;
 Fri, 24 Jul 2015 08:25:59 -0700 (PDT)
Received: from ox ([2601:641:c000:600:84cf:6e7f:7ff6:2375])
 by smtp.gmail.com with ESMTPSA id j5sm15216757pdi.7.2015.07.24.08.25.57
 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
 Fri, 24 Jul 2015 08:25:58 -0700 (PDT)
Date: Fri, 24 Jul 2015 08:25:55 -0700
From: Navdeep Parhar <nparhar@gmail.com>
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
Cc: Xin Li <delphij@delphij.net>, re@FreeBSD.org, d@delphij.net,
 freebsd-stable@freebsd.org
Subject: Re: freebsd downgrade
Message-ID: <20150724152555.GB4276@ox>
Mail-Followup-To: Slawa Olhovchenkov <slw@zxy.spb.ru>,
 Xin Li <delphij@delphij.net>, re@FreeBSD.org, d@delphij.net,
 freebsd-stable@freebsd.org
References: <1437693686.78236.2.camel@yandex.com>
 <55B17DEB.6070302@delphij.net> <20150724072052.GF43740@zxy.spb.ru>
 <55B1EC8F.7050304@delphij.net> <20150724075010.GG43740@zxy.spb.ru>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20150724075010.GG43740@zxy.spb.ru>
User-Agent: Mutt/1.5.23 (2014-03-12)
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable/>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 24 Jul 2015 15:26:00 -0000

On Fri, Jul 24, 2015 at 10:50:10AM +0300, Slawa Olhovchenkov wrote:
> > > 
> > > For me -- degradate network performance, about 30%. I am do
> > > verification now, by downgrading kernel.
> > 
> > What kind of workload and what NIC are you using?
> 
> Chelsio T580-LP-CR, http serving.
> r276179 can utilise 40Gbit, r281264 -- only 28Gbit.

Can you please try -RC1 when it comes out and report back if you still
see degraded network performance? 

Regards,
Navdeep