From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269194AbUHaVEr (ORCPT ); Tue, 31 Aug 2004 17:04:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267702AbUHaVC6 (ORCPT ); Tue, 31 Aug 2004 17:02:58 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:31449 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S269176AbUHaUeO (ORCPT ); Tue, 31 Aug 2004 16:34:14 -0400 Subject: Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 From: Lee Revell To: Ingo Molnar Cc: Daniel Schmitt , "K.R. Foley" , Felipe Alfaro Solana , linux-kernel , Mark_H_Johnson@raytheon.com In-Reply-To: <20040831202051.GA1111@elte.hu> References: <20040830090608.GA25443@elte.hu> <1093934448.5403.4.camel@krustophenia.net> <20040831070658.GA31117@elte.hu> <1093980065.1603.5.camel@krustophenia.net> <20040831193734.GA29852@elte.hu> <1093981634.1633.2.camel@krustophenia.net> <20040831195107.GA31327@elte.hu> <20040831200912.GA32378@elte.hu> <1093983034.1633.11.camel@krustophenia.net> <20040831201420.GA899@elte.hu> <20040831202051.GA1111@elte.hu> Content-Type: text/plain Message-Id: <1093984452.1596.0.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 31 Aug 2004 16:34:12 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2004-08-31 at 16:20, Ingo Molnar wrote: > so ... could you try the patch below - does it work and how does the > latency look like now? (ontop of an unmodified generic.c) > Now it looks like this: preemption latency trace v1.0.2 ------------------------------- latency: 574 us, entries: 19 (19) ----------------- | task: X/1391, uid:0 nice:0 policy:0 rt_prio:0 ----------------- => started at: cond_resched+0xd/0x40 => ended at: sys_ioctl+0xdf/0x290 =======> 00000001 0.000ms (+0.000ms): touch_preempt_timing (cond_resched) 00000001 0.000ms (+0.000ms): do_blank_screen (vt_ioctl) 00000001 0.000ms (+0.000ms): is_console_locked (do_blank_screen) 00000001 0.001ms (+0.000ms): hide_cursor (do_blank_screen) 00000001 0.002ms (+0.000ms): vgacon_cursor (hide_cursor) 00000001 0.004ms (+0.001ms): hide_softcursor (do_blank_screen) 00000001 0.004ms (+0.000ms): is_console_locked (do_blank_screen) 00000001 0.004ms (+0.000ms): vgacon_save_screen (do_blank_screen) 00000001 0.005ms (+0.000ms): _mmx_memcpy (vgacon_save_screen) 00000001 0.006ms (+0.000ms): kernel_fpu_begin (_mmx_memcpy) 00000001 0.481ms (+0.475ms): vgacon_blank (do_blank_screen) 00000001 0.481ms (+0.000ms): vgacon_set_origin (vgacon_blank) 00000001 0.573ms (+0.091ms): set_origin (vt_ioctl) 00000001 0.573ms (+0.000ms): is_console_locked (set_origin) 00000001 0.573ms (+0.000ms): vgacon_set_origin (set_origin) 00000001 0.574ms (+0.000ms): release_console_sem (vt_ioctl) 00000001 0.575ms (+0.000ms): sub_preempt_count (sys_ioctl) 00000001 0.575ms (+0.000ms): _mmx_memcpy (check_preempt_timing) 00000001 0.575ms (+0.000ms): kernel_fpu_begin (_mmx_memcpy) Lee