From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261473AbULAWHt (ORCPT ); Wed, 1 Dec 2004 17:07:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261470AbULAWHj (ORCPT ); Wed, 1 Dec 2004 17:07:39 -0500 Received: from smtp3.netcabo.pt ([212.113.174.30]:48835 "EHLO exch01smtp09.hdi.tvcabo") by vger.kernel.org with ESMTP id S261469AbULAWHP (ORCPT ); Wed, 1 Dec 2004 17:07:15 -0500 Message-ID: <32792.192.168.1.8.1101938686.squirrel@192.168.1.8> In-Reply-To: <20041201215837.GA24809@elte.hu> References: <17532.195.245.190.94.1101829198.squirrel@195.245.190.94> <20041201103251.GA18838@elte.hu> <32831.192.168.1.5.1101905229.squirrel@192.168.1.5> <20041201154046.GA15244@elte.hu> <20041201160632.GA3018@elte.hu> <20041201162034.GA8098@elte.hu> <33059.192.168.1.5.1101927565.squirrel@192.168.1.5> <20041201212925.GA23410@elte.hu> <20041201213023.GA23470@elte.hu> <32788.192.168.1.8.1101938057.squirrel@192.168.1.8> <20041201215837.GA24809@elte.hu> Date: Wed, 1 Dec 2004 22:04:46 -0000 (WET) Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-19 From: "Rui Nuno Capela" To: "Ingo Molnar" Cc: linux-kernel@vger.kernel.org, "Lee Revell" , mark_h_johnson@raytheon.com, "K.R. Foley" , "Bill Huey" , "Adam Heath" , "Florian Schmidt" , "Thomas Gleixner" , "Michal Schmidt" , "Fernando Pablo Lopez-Lezcano" , "Karsten Wiese" , "Gunther Persoons" , emann@mrv.com, "Shane Shrybman" , "Amit Shah" , "Esben Nielsen" , "Andrew Morton" User-Agent: SquirrelMail/1.4.3a X-Mailer: SquirrelMail/1.4.3a MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal X-OriginalArrivalTime: 01 Dec 2004 22:07:09.0888 (UTC) FILETIME=[1A70E400:01C4D7F2] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar wrote: > > * Rui Nuno Capela wrote: > >> >> up. (can the soundcard period size / buffering be reduced further, to >> >> make it more sensitive to scheduling latencies?) >> > >> >> OK. >> >> A couple of hours later, as I thrown in some more jack clients into >> the picture, the XRUNs started to appear, but very discrete still. > > just curious, what type of CPU load did this create - over 50%? > At this very moment? About 75%. Here's a top snapshot: top - 22:03:48 up 3:36, 4 users, load average: 1.91, 2.73, 2.16 Tasks: 86 total, 1 running, 85 sleeping, 0 stopped, 0 zombie Cpu(s): 33.9% us, 39.7% sy, 0.0% ni, 26.5% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 500900k total, 411308k used, 89592k free, 12680k buffers Swap: 506008k total, 0k used, 506008k free, 209300k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 18300 rncbc 16 0 89128 87m 14m S 30.8 17.8 13:02.31 qsynth 18288 rncbc 20 0 28148 27m 2316 S 10.8 5.6 4:29.60 jackd 3078 root -71 -5 0 0 0 S 8.9 0.0 16:33.69 IRQ 5 16701 rncbc 15 0 26988 26m 14m S 7.3 5.4 4:05.01 qjackctl 3587 root 15 0 24288 13m 2696 S 3.8 2.8 9:27.28 X 4291 rncbc 15 0 28240 15m 12m S 1.9 3.1 1:44.69 kdeinit 4356 rncbc 15 0 21312 7832 5952 S 1.6 1.6 2:45.78 gkrellm 4346 rncbc 15 0 23744 12m 9.9m S 0.6 2.5 0:19.92 krandrtray 4347 rncbc 15 0 24260 12m 9m S 0.6 2.5 0:19.62 kdeinit 4355 rncbc 15 0 23684 11m 9504 S 0.6 2.3 0:16.15 kdeinit 4361 rncbc 15 0 24948 13m 11m S 0.6 2.8 0:38.53 kscd 4453 rncbc 16 0 27168 15m 12m S 0.6 3.1 0:28.73 kdeinit 24504 rncbc 17 0 2064 996 780 R 0.6 0.2 0:00.25 top 4323 rncbc 15 0 29280 13m 11m S 0.3 2.8 0:14.93 kdeinit 4330 rncbc 16 0 32296 19m 15m S 0.3 3.9 0:30.49 kdeinit 4333 rncbc 15 0 26880 14m 12m S 0.3 3.1 0:25.56 kdeinit 4337 rncbc 15 0 24680 13m 10m S 0.3 2.7 0:25.52 kamix 4345 rncbc 15 0 26500 14m 12m S 0.3 2.9 0:26.77 korgac Bye. -- rncbc aka Rui Nuno Capela rncbc@rncbc.org