From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932091AbYAUXYb (ORCPT ); Mon, 21 Jan 2008 18:24:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760800AbYAUXTx (ORCPT ); Mon, 21 Jan 2008 18:19:53 -0500 Received: from ns2.uludag.org.tr ([193.140.100.220]:41232 "EHLO uludag.org.tr" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1760276AbYAUXTv (ORCPT ); Mon, 21 Jan 2008 18:19:51 -0500 From: "=?utf-8?q?S=2E=C3=87a=C4=9Flar?= Onur" Reply-To: caglar@pardus.org.tr Organization: =?utf-8?q?T=C3=9CB=C4=B0TAK_/?= UEKAE To: LKML Subject: Rescheduling interrupts Date: Tue, 22 Jan 2008 01:19:38 +0200 User-Agent: KMail/1.9.6 (enterprise 0.20080118.763038) Cc: Ingo Molnar , Arjan van de Ven MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1463599.L3vYDv7SIA"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200801220119.42312.caglar@pardus.org.tr> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1463599.L3vYDv7SIA Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi; With Linus's latest git, powertop reports following while system nearly %10= 0=20 idle; PowerTOP version 1.9 (C) 2007 Intel Corporation Cn Avg residency P-states (frequencies) C0 (cpu running) ( 6,3%) 1,84 Ghz 0,4% C1 0,0ms ( 0,0%) 1333 Mhz 0,0% C2 0,1ms ( 0,5%) 1000 Mhz 99,6% C3 3,7ms (93,2%) Wakeups-from-idle per second : 306,8 interval: 10,0s Power usage (5 minute ACPI estimate) : 23,1 W (0,5 hours left) Top causes for wakeups: 59,9% (238,4) : Rescheduling interrupts ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^= ^^^ 14,7% ( 58,6) amarokapp : schedule_timeout (process_timeout) 5,5% ( 21,9) java : futex_wait (hrtimer_wakeup) 5,0% ( 19,8) : iwl3945 2,5% ( 10,0) java : schedule_timeout (process_timeout) 2,5% ( 10,0) : ehci_work (ehci_watchdog) 2,5% ( 10,0) : extra timer interrupt 1,6% ( 6,4) artsd : schedule_timeout (process_timeout) 1,0% ( 4,0) : usb_hcd_poll_rh_status (rh_timer_func) 0,5% ( 2,0) : ohci1394, uhci_hcd:usb4, nvidia 0,5% ( 2,0) : clocksource_check_watchdog=20 (clocksource_watchdog) 0,5% ( 2,0) kwin : schedule_timeout (process_timeout) 0,5% ( 1,9) wpa_supplicant : schedule_timeout (process_timeout) 0,3% ( 1,2) kdesktop : schedule_timeout (process_timeout) 0,3% ( 1,0) kwrapper : do_nanosleep (hrtimer_wakeup) 0,3% ( 1,0) klipper : schedule_timeout (process_timeout) 0,3% ( 1,0) artsd : do_setitimer (it_real_fn) 0,3% ( 1,0) gpg-agent : schedule_timeout (process_timeout) 0,3% ( 1,0) X : nv_start_rc_timer (nv_kern_rc_timer) 0,3% ( 1,0) kicker : schedule_timeout (process_timeout) 0,1% ( 0,5) iwl3945 : ieee80211_authenticate=20 (ieee80211_sta_timer) 0,1% ( 0,5) : neigh_table_init_no_netlink=20 (neigh_periodic_timer) This " : Rescheduling interrupts" causes at least 200 wakeups=20 (sometimes i see ~400 wakeups) for me and a quick google search yields [1],= =20 but i didn't see this reported to LKML, so here it is :). If anything else is needed please yell... [1] http://www.mail-archive.com/power@bughost.org/msg01009.html =2D-=20 S.=C3=87a=C4=9Flar Onur http://cekirdek.pardus.org.tr/~caglar/ Linux is like living in a teepee. No Windows, no Gates and an Apache in hou= se! --nextPart1463599.L3vYDv7SIA Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (GNU/Linux) iD8DBQBHlSiOy7E6i0LKo6YRAmADAJ9MmCHhIgHk3oUsBce4kWiuT0LJLACfZZki UaWfTAkLV4risW7Weg03Brg= =KeAV -----END PGP SIGNATURE----- --nextPart1463599.L3vYDv7SIA--