From owner-freebsd-current@FreeBSD.ORG Tue Aug 28 04:41:46 2007 Return-Path: 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 4E7B716A420; Tue, 28 Aug 2007 04:41:46 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from relay02.kiev.sovam.com (relay02.kiev.sovam.com [62.64.120.197]) by mx1.freebsd.org (Postfix) with ESMTP id D7E4C13C468; Tue, 28 Aug 2007 04:41:45 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from [212.82.216.226] (helo=deviant.kiev.zoral.com.ua) by relay02.kiev.sovam.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.67) (envelope-from ) id 1IPstU-000Ob5-MJ; Tue, 28 Aug 2007 07:41:45 +0300 Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.1/8.14.1) with ESMTP id l7S4fXY2034333; Tue, 28 Aug 2007 07:41:33 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.1/8.14.1/Submit) id l7S4fXZ3034332; Tue, 28 Aug 2007 07:41:33 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Tue, 28 Aug 2007 07:41:33 +0300 From: Kostik Belousov To: Robert Watson Message-ID: <20070828044133.GR2332@deviant.kiev.zoral.com.ua> References: <46D25242.10504@micom.mng.net> <20070827231419.H30469@fledge.watson.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="HzaOE8X7KzPzAQEl" Content-Disposition: inline In-Reply-To: <20070827231419.H30469@fledge.watson.org> User-Agent: Mutt/1.4.2.3i X-Scanner-Signature: 4204c266f86c3e9b1e0231505dd73b85 X-DrWeb-checked: yes X-SpamTest-Envelope-From: kostikbel@gmail.com X-SpamTest-Group-ID: 00000000 X-SpamTest-Info: Profiles 1410 [August 27 2007] X-SpamTest-Info: helo_type=3 X-SpamTest-Info: {received from trusted relay: not dialup} X-SpamTest-Method: none X-SpamTest-Method: Local Lists X-SpamTest-Rate: 0 X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0255], KAS30/Release Cc: Ganbold , "freebsd-current@freebsd.org" Subject: Re: computer becomes slow when compiling something X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Aug 2007 04:41:46 -0000 --HzaOE8X7KzPzAQEl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Aug 27, 2007 at 11:14:58PM +0100, Robert Watson wrote: >=20 > On Mon, 27 Aug 2007, Ganbold wrote: >=20 > >I'm running FreeBSD 7.0-CURRENT with SCHED_ULE, INVARIANTS, WITNESS=20 > >enabled kernel. >=20 > Try the same thing again without INVARIANTS and WITNESS, both of which ca= n=20 > consume a lot of CPU in kernel on a very active system, especially if lot= s=20 > of vnodes are being allocated and freed. Especially WITNESS. It does happens on the kernels without debug options, in particular, WITNESS and INVARIANTS. It happens when a lot of short-lived processes are rapidly created. Compilation is a good example of such workload; running configure script is even better. --HzaOE8X7KzPzAQEl Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFG06d8C3+MBN1Mb4gRAqisAKDrMamxMNqS40/pe3ezT/xozB7bawCfSfrc 8QQz2WuOWQVqrtL0jyHFeRQ= =m33C -----END PGP SIGNATURE----- --HzaOE8X7KzPzAQEl--