From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kenneth Johansson Subject: Annoying DVD and IRQ problem Date: Thu, 23 Sep 2004 00:28:43 +0200 Sender: linux-ide-owner@vger.kernel.org Message-ID: <1095892123.2779.12.camel@tiger> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from 1-1-4-20a.ras.sth.bostream.se ([82.182.72.90]:17332 "EHLO garbo.kenjo.org") by vger.kernel.org with ESMTP id S268072AbUIVWae (ORCPT ); Wed, 22 Sep 2004 18:30:34 -0400 Received: from tiger.kenjo.org ([192.168.1.2]) by garbo.kenjo.org with esmtp (Exim 3.36 #1 (Debian)) id 1CAFbP-0005Kf-00 for ; Thu, 23 Sep 2004 00:28:43 +0200 List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org I have a problem using the DVD drive under kernel 2.6 in all the versions I tested(up to 2.6.8.1). Since I do not use the dvd that often it has not been a big problem but now I starting to get tired of it. First is there any valid way for the interrupt rate to drop below 1000 ? This is a sample from vmstat during a copy from the dvd drive. ---- r b swpd free buff cache si so bi bo in cs us sy id wa 2 3 0 3812 21876 591388 0 0 2340 15260 455 230 25 75 0 0 2 3 0 4700 21844 590828 0 0 1288 0 422 133 17 83 0 0 2 4 0 4024 21828 592028 0 0 1288 136 233 121 11 89 0 0 2 1 0 3856 21852 592272 0 0 2712 116 412 232 21 71 0 7 2 2 0 3820 21876 592236 0 0 2736 0 330 214 17 83 0 0 3 3 0 3840 20376 592924 0 0 2468 0 495 332 53 47 0 0 3 3 0 4092 20396 592092 0 0 2612 0 794 257 29 71 0 0 ---- The drive should also do a lot better than 2MB/sec it's spec is 8x for +/-R and 12X DVD-rom During use the mouse pointer sometimes get just crazy for a few seconds it seams like X is getting fake mouse and keyboard events. resulting in all sort of fun things ranging from the mouse pointer just moving around to quiting some program. It's also not possible to watch tv with tvtime at the same time as the dvd is in use due to to many lost frames. 0000:00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) cat /proc/interrupts CPU0 0: 7232433 IO-APIC-edge timer 1: 11872 IO-APIC-edge i8042 8: 4 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 12: 150886 IO-APIC-edge i8042 15: 169584 IO-APIC-edge ide1 16: 7325765 IO-APIC-level eth0, nvidia 17: 205210 IO-APIC-level libata 18: 75514 IO-APIC-level EMU10K1 19: 5970 IO-APIC-level bttv0 21: 78 IO-APIC-level uhci_hcd, uhci_hcd NMI: 0 LOC: 7242394 ERR: 0 MIS: 4