From owner-freebsd-performance@FreeBSD.ORG Wed Oct 24 16:08:04 2007 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3075316A469 for ; Wed, 24 Oct 2007 16:08:04 +0000 (UTC) (envelope-from josh.carroll@gmail.com) Received: from rv-out-0910.google.com (rv-out-0910.google.com [209.85.198.187]) by mx1.freebsd.org (Postfix) with ESMTP id 0656C13C4B5 for ; Wed, 24 Oct 2007 16:08:03 +0000 (UTC) (envelope-from josh.carroll@gmail.com) Received: by rv-out-0910.google.com with SMTP id l15so186759rvb for ; Wed, 24 Oct 2007 09:07:56 -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:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=LAVZMicoR0gmEwGcfLE4LnDfPlq0rkiLJ6t22i+mZU8=; b=IRTEoDUK3e+8lMph17Cd2psUrPYRYtXsj2CtJqMOb69u4osJoD1QlqfI/z6M7amrzmsCEprFliiR+tUCvk94oJi2XrSpwcgXDIygLWmqaM1V/UfShW82AAhm0qu06YXChbaD5ne3TAegU37o5tmCqDIhjshc+qU5Vc+/RFslEoc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=ehC9vIkpceyay8ZeKTtF2eNWiP1tqwqn1wyHFiVEAR7mvFJC8gigGsLyrIKeXwbwOkikEL9MllRLeVYVKgWlZXIH8/VK2CiYsuAAAjNVg/pIAp4cy0MF1L6+QiCYNyMTv+Su8EIc+pYHj05sz05QDGqyLzkYpd9yyvbbASZKZY4= Received: by 10.141.206.13 with SMTP id i13mr358281rvq.1193242076389; Wed, 24 Oct 2007 09:07:56 -0700 (PDT) Received: by 10.35.117.12 with HTTP; Wed, 24 Oct 2007 09:07:56 -0700 (PDT) Message-ID: <8cb6106e0710240907p28f351f1w3d638e578a4aeb42@mail.gmail.com> Date: Wed, 24 Oct 2007 12:07:56 -0400 From: "Josh Carroll" To: "Nick Evans" In-Reply-To: <20071024114954.5ea1b37b@pleiades.nextvenue.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <8cb6106e0710230902x4edf2c8eu2d912d5de1f5d4a2@mail.gmail.com> <471E343C.2040509@FreeBSD.org> <20071024171915.E84143@delplex.bde.org> <8cb6106e0710240639r20e03ce9w81ed3354338b7395@mail.gmail.com> <20071024113434.326c3749@pleiades.nextvenue.com> <8cb6106e0710240839h1a59f9f9y919e6b297c3efb8e@mail.gmail.com> <20071024114954.5ea1b37b@pleiades.nextvenue.com> Cc: remy.nonnenmacher@activnetworks.com, Kris Kennaway , freebsd-performance@freebsd.org, Bruce Evans Subject: Re: ULE vs. 4BSD in RELENG_7 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: josh.carroll@gmail.com List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Oct 2007 16:08:04 -0000 > Yes, that's the proper default. You could try setting steal_thresh to 1. I > noticed a problem with building ports on an 8 core Xeon system while 8 > distributed.net crunchers were running. The port build would proceed > incredibly slowly, steal_thresh=1 helped a little bit. It might not make up > the 5% gap you're seeing though. During early ULE2/3 testing the other > variables Jeff recommended trying were sched.pick_pri (which I never saw > effect from), sched_tryself and sched.balance. They're all bools IIRC. Since > this workload is a bit different from any of mine it would be worthwhile to > try those variables. Thanks for the information. Setting sched_tryself to 0 improved things slightly. sched.balance didn't seem to help. I'm trying to increase/decrease the balance_interval to see if that helps. Josh