From owner-svn-src-all@FreeBSD.ORG  Tue May 20 16:04:27 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 0B7A4165;
 Tue, 20 May 2014 16:04:27 +0000 (UTC)
Received: from mail-qg0-x231.google.com (mail-qg0-x231.google.com
 [IPv6:2607:f8b0:400d:c04::231])
 (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 9C18124B6;
 Tue, 20 May 2014 16:04:26 +0000 (UTC)
Received: by mail-qg0-f49.google.com with SMTP id a108so1075573qge.22
 for <multiple recipients>; Tue, 20 May 2014 09:04:25 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:sender:in-reply-to:references:date:message-id:subject
 :from:to:cc:content-type;
 bh=jxEbovZGBnG87/TkG33hEyTqjDUU6DPFkdfanQxMNw8=;
 b=FZl3kK2Ijr0C5sDvasFN5396vBu1PVbTfQFq2X0Om4vlkZUdiJKI2//wVfeovRQNSW
 Len8RE4MsPw2tNmJqGsVWhgeAI04t/tuAXDrC5QFVEPjE8Rqh2Ie+fJlRswp08W5Oano
 zx270vY6ExzDpU2wT3KWLseFoB46rXBggGVNu2lb9gAd+R+2QQm5MtUZLjX5GqdYkLyc
 C/L2m4uYm4lh60ys3S0QUXSEHBJblGLdpA+p8mtIBnClIj4mcMtiq2ZVgEyCT8t4QN5n
 ODvoHALbgMUJfR/Bi3i7nGbu0TiJIMsnHaVyaEK7aLm7ox42iY1WjqqjxUnuqgBISzjg
 CfQw==
MIME-Version: 1.0
X-Received: by 10.224.16.199 with SMTP id p7mr60042787qaa.76.1400601865781;
 Tue, 20 May 2014 09:04:25 -0700 (PDT)
Sender: adrian.chadd@gmail.com
Received: by 10.224.191.201 with HTTP; Tue, 20 May 2014 09:04:25 -0700 (PDT)
In-Reply-To: <20140520154113.GA23318@zxy.spb.ru>
References: <201405100053.s4A0rbF9080571@svn.freebsd.org>
 <20140511083114.GA53503@zxy.spb.ru>
 <CAJ-Vmo=x-JkHSVDT4REWQ_g=vb45T+TfrpZ8bc28NNbPd-ZYsg@mail.gmail.com>
 <20140520154113.GA23318@zxy.spb.ru>
Date: Tue, 20 May 2014 09:04:25 -0700
X-Google-Sender-Auth: 2BA7OtUkkns2bD-3VXVeE9jDicg
Message-ID: <CAJ-Vmonby1MVuuJnWoXcPh1cTE1q0SQEQhfL_ESzoDEWHtKcCw@mail.gmail.com>
Subject: Re: svn commit: r265792 - head/sys/kern
From: Adrian Chadd <adrian@freebsd.org>
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
Content-Type: text/plain; charset=UTF-8
Cc: "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>,
 "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>,
 "src-committers@freebsd.org" <src-committers@freebsd.org>
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 20 May 2014 16:04:27 -0000

On 20 May 2014 08:41, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:

>> (But if you try it on 10.0 and it changes things, by all means let me know.)
>
> I am try on 10.0, but not sure about significant improvement (may be
> 10%).
>
> For current CPU (E5-2650 v2 @ 2.60GHz) hwpmc don't working (1. after
> collect some data `pmcstat -R sample.out -G out.txt` don't decode any;
> 2. kldunload hwpmc do kernel crash) and I can't collect detailed
> profile information.

Yup. I'm starting to get really ticked off at how pmc logging on
multi-core devices just "stops" after a while. I'll talk with other
pmc people and see if we can figure out what the heck is going on. :(


-a