From owner-freebsd-current@FreeBSD.ORG  Thu Oct  4 19:32:03 2007
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 32D8D16A420
	for <freebsd-current@freebsd.org>; Thu,  4 Oct 2007 19:32:03 +0000 (UTC)
	(envelope-from kip.macy@gmail.com)
Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.172])
	by mx1.freebsd.org (Postfix) with ESMTP id C24BD13C4BE
	for <freebsd-current@freebsd.org>; Thu,  4 Oct 2007 19:32:02 +0000 (UTC)
	(envelope-from kip.macy@gmail.com)
Received: by ug-out-1314.google.com with SMTP id a2so456817ugf
	for <freebsd-current@freebsd.org>; Thu, 04 Oct 2007 12:32:01 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta;
	h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	bh=DpgHKhB+6bco2kOsjni0Qzgeb5RsfBjjGKkv5rnpFpQ=;
	b=ZyTXCB0/CWItU/uYd5e6OPmfSVr4+O6WYuAdKBdKFnRGi2zyAKMsah4ghR/ewJkgw1tNGB+0ZPFGlQne4wlYJQb5d2u+GP2y/Tr6kkysUAqaSRYMdT2SZJEsnpUa37FoG7SAyeztp/l1qd3oSrOhFWAgxmkWTHRVitGYg6gpqt4=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta;
	h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	b=JRzR6Dk/fXA+MoENCKQju/e4mopGgdu3E6QxM0ZJxejdctzk8H7+C5jn+zVdkg6jUFCg8xLilPv9o/70ctr4N4IWvhnKwttGEAoZEI0z4CwIP19cw6xLBgOw9QcBI+Pr/RGnqX0lWeMrbvz2AFAETlbpjRe/1c2BDLFDVGNqBvY=
Received: by 10.78.171.20 with SMTP id t20mr8282411hue.1191526320679;
	Thu, 04 Oct 2007 12:32:00 -0700 (PDT)
Received: by 10.78.162.18 with HTTP; Thu, 4 Oct 2007 12:32:00 -0700 (PDT)
Message-ID: <b1fa29170710041232s5effd277rbf0a8705bf94927b@mail.gmail.com>
Date: Thu, 4 Oct 2007 12:32:00 -0700
From: "Kip Macy" <kip.macy@gmail.com>
To: "Artem Kuchin" <matrix@itlegion.ru>
In-Reply-To: <009a01c806bc$5c7021d0$0c00a8c0@Artem>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <009a01c806bc$5c7021d0$0c00a8c0@Artem>
Cc: freebsd-current@freebsd.org
Subject: Re: Scheduler selection for web hosting
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 04 Oct 2007 19:32:03 -0000

On 10/4/07, Artem Kuchin <matrix@itlegion.ru> wrote:
> Hello!
>
> I have read that in 7-Current there are two schedulers.
> 4BSD - which, AFAIK, is a renamed new SMP scheduler, but i'm not sure
> ULE
>
> 7-current amd64 is actually seems to be VERY stable on hardware and
> software we use, so, we want to move it to production servers and
> want to get max perfomance from it for web hosting.
>
> As, as i know, scheduler is a very important thing when i comes to
> perfomance in havy loaded really multitasking system. We are having
> about 900 processes in about 20 jails.
>
> So, what is the difference between the two? Which seems to be better
> for hosting? Is ULE bugfree and stable enogh for this?
>

ULE has been very heavily tested. I find in most of my networking
benchmarks on 4-way / 8-way machines it reduces cpu utilization by
1/3rd for a given level of throughput. Your mileage will of course
vary.

 -Kip