From owner-freebsd-hackers@FreeBSD.ORG  Thu Oct 18 15:11:58 2012
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
 by hub.freebsd.org (Postfix) with ESMTP id B5C3272C;
 Thu, 18 Oct 2012 15:11:58 +0000 (UTC)
 (envelope-from ndenev@gmail.com)
Received: from mail-wi0-f170.google.com (mail-wi0-f170.google.com
 [209.85.212.170])
 by mx1.freebsd.org (Postfix) with ESMTP id 166468FC1B;
 Thu, 18 Oct 2012 15:11:56 +0000 (UTC)
Received: by mail-wi0-f170.google.com with SMTP id hm2so1945909wib.1
 for <multiple recipients>; Thu, 18 Oct 2012 08:11:55 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=subject:mime-version:content-type:from:in-reply-to:date:cc
 :content-transfer-encoding:message-id:references:to:x-mailer;
 bh=9EAGJ3tBEIhFVcRVS8g2aCLO95xdlOnsmAkaMcXLB7o=;
 b=ACHnkuttJboOB8/p1FV9vKYYayRuAfHVQxJFcZ0pdrZwgYqjmFa07Nqx/YWOCyz/gM
 SNGAYxviLoWBobbThjqQo1VaW2I1oCR2XJk9jaLu4xrObYBmjagMpL+NcevSRbJBU8uR
 Ry2smtbX1Xg/O6C+ShAIvQyQ4b/ftXHSZEhpd0kOV5Txhj+hY5SoXgbj1W396FOYti4h
 TbBqWMuOkqlcZrNN9Fpt15lbRqvHHZxZytm38jS6T+vSskWHuG6b+oWaOCs+XTozgP+I
 pXAbJQk+maT76grejsFWUDeorEuXJKir3RSdWwNJTb7OOKW1kBiQRaDc04Pt81KAqtyE
 9r2Q==
Received: by 10.180.85.99 with SMTP id g3mr12044511wiz.5.1350573115711;
 Thu, 18 Oct 2012 08:11:55 -0700 (PDT)
Received: from ndenevsa.sf.moneybookers.net (g1.moneybookers.com.
 [217.18.249.148])
 by mx.google.com with ESMTPS id ay10sm34034836wib.2.2012.10.18.08.11.51
 (version=TLSv1/SSLv3 cipher=OTHER);
 Thu, 18 Oct 2012 08:11:52 -0700 (PDT)
Subject: Re: NFS server bottlenecks
Mime-Version: 1.0 (Mac OS X Mail 6.1 \(1498\))
Content-Type: text/plain; charset=us-ascii
From: Nikolay Denev <ndenev@gmail.com>
In-Reply-To: <CAF-QHFUU0hhtRNK1_p9zks2w+e22bfWOtv+XaqgFqTiURcJBbQ@mail.gmail.com>
Date: Thu, 18 Oct 2012 18:11:51 +0300
Content-Transfer-Encoding: quoted-printable
Message-Id: <6DAAB1E6-4AC7-4B08-8CAD-0D8584D039DE@gmail.com>
References: <937460294.2185822.1350093954059.JavaMail.root@erie.cs.uoguelph.ca>
 <302BF685-4B9D-49C8-8000-8D0F6540C8F7@gmail.com> <k5gtdh$nc0$1@ger.gmane.org>
 <0857D79A-6276-433F-9603-D52125CF190F@gmail.com>
 <CAF-QHFUU0hhtRNK1_p9zks2w+e22bfWOtv+XaqgFqTiURcJBbQ@mail.gmail.com>
To: Ivan Voras <ivoras@freebsd.org>
X-Mailer: Apple Mail (2.1498)
Cc: freebsd-hackers@freebsd.org
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 18 Oct 2012 15:11:58 -0000


On Oct 15, 2012, at 5:34 PM, Ivan Voras <ivoras@freebsd.org> wrote:

> On 15 October 2012 16:31, Nikolay Denev <ndenev@gmail.com> wrote:
>>=20
>> On Oct 15, 2012, at 2:52 PM, Ivan Voras <ivoras@freebsd.org> wrote:
>=20
>>> http://people.freebsd.org/~ivoras/diffs/nfscache_lock.patch
>>>=20
>>> It should apply to HEAD without Rick's patches.
>>>=20
>>> It's a bit different approach than Rick's, breaking down locks even =
more.
>>=20
>> Applied and compiled OK, I will be able to test it tomorrow.
>=20
> Ok, thanks!
>=20
> The differences should be most visible in edge cases with a larger
> number of nfsd processes (16+) and many CPU cores.

I'm now rebooting with your patch, and hopefully will have some results =
tomorrow.