From owner-freebsd-current@FreeBSD.ORG Sun Jul 18 10:30:09 2010 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 3382F1065673; Sun, 18 Jul 2010 10:30:09 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 9753D8FC0C; Sun, 18 Jul 2010 10:30:07 +0000 (UTC) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id o6IAU48c016649 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 18 Jul 2010 13:30:04 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4) with ESMTP id o6IAU3Tq009437; Sun, 18 Jul 2010 13:30:03 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4/Submit) id o6IAU3bZ009436; Sun, 18 Jul 2010 13:30:03 +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: Sun, 18 Jul 2010 13:30:03 +0300 From: Kostik Belousov To: Doug Barton Message-ID: <20100718103003.GO2381@deviant.kiev.zoral.com.ua> References: <20100717192128.GM2381@deviant.kiev.zoral.com.ua> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="owpTafYe/1tj88Rh" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_20, DNS_FROM_OPENWHOIS autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-current@freebsd.org, Rui Paulo Subject: Re: Why is intr taking up so much cpu? 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: Sun, 18 Jul 2010 10:30:09 -0000 --owpTafYe/1tj88Rh Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jul 18, 2010 at 01:14:41AM -0700, Doug Barton wrote: > On Sat, 17 Jul 2010, Kostik Belousov wrote: >=20 > >Run top in the mode where all system threads are shown separately > >(e.g. top -HS seems to do it), then watch what thread eats the processor. >=20 > And the winner is! >=20 > 11 root -32 - 0K 168K WAIT 0 0:28 18.02% {swi4:=20 > clock} > 11 root 21 -64 - 0K 168K WAIT 0 1:17 18.90% intr >=20 > The first is with -H, the second without. Most likely it is some callout handling. Just in case, do you have console screensaver active ? --owpTafYe/1tj88Rh Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAkxC16sACgkQC3+MBN1Mb4jgzACeMg9veXo29z7tRQrjx+HXR5I1 FjcAoIR0uBJhJkUY/v7KqpCcor3z0nzQ =1Y1d -----END PGP SIGNATURE----- --owpTafYe/1tj88Rh--