From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 23 May 2001 00:01:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 23 May 2001 00:01:43 -0400 Received: from relay1.scripps.edu ([137.131.200.29]:51432 "EHLO relay1.scripps.edu") by vger.kernel.org with ESMTP id ; Wed, 23 May 2001 00:01:32 -0400 Date: Tue, 22 May 2001 20:58:10 -0700 (PDT) From: Andy Arvai Message-Id: <200105230358.UAA14993@astra.scripps.edu> To: linux-kernel@vger.kernel.org, linux-smp@vger.kernel.org Subject: noapic doesn't quite work as advertised X-Sun-Charset: US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I've got a tyan s2520 motherboard (dual PIII + i840) which is having a problem with APIC errors. I tried running with noapic, but there were still errors, although fewer. Does anyone have any idea what is going on? I'm running 2.4.4 and software raid5, which generates a lot of interrupts. Here are some of the APIC errors (with noapic): May 21 12:38:31 rad kernel: APIC error on CPU0: 02(01) May 21 12:42:31 rad kernel: APIC error on CPU0: 01(01) May 21 12:42:31 rad kernel: APIC error on CPU1: 02(02) May 21 12:43:13 rad kernel: APIC error on CPU0: 01(02) May 21 12:43:13 rad kernel: APIC error on CPU1: 02(01) May 21 13:48:19 rad kernel: SCSI disk error : host 3 channel 0 id 0 lun 0 return code = 8000002 May 21 13:48:19 rad kernel: [valid=0] Info fld=0x0, Current sd08:d2: sense key Aborted Command May 21 13:48:19 rad kernel: Additional sense indicates Scsi parity error May 21 13:48:19 rad kernel: I/O error: dev 08:d2, sector 56590336 May 21 13:48:19 rad kernel: interrupting MD-thread pid 1223 May 21 13:48:19 rad kernel: raid5: parity resync was not fully finished, restarting next time. Here is /proc/interrupts to prove I'm really running with noapic: CPU0 CPU1 0: 17760464 0 XT-PIC timer 1: 29525 0 XT-PIC keyboard 2: 0 0 XT-PIC cascade 3: 27416165 0 XT-PIC eth1 11: 188276091 0 XT-PIC aic7xxx, aic7xxx, aic7xxx, aic7xxx 12: 413496 0 XT-PIC PS/2 Mouse 14: 1137884 0 XT-PIC ide0 15: 1740847 0 XT-PIC ide1 NMI: 0 0 LOC: 17760053 17759969 ERR: 31 Right now I'm running with noapic and nosmp and so far this seems to be working. I really would like to be able to use the second cpu so any suggestion would be greatly appreciated. Andy arvai@scripps.edu