From owner-freebsd-current@FreeBSD.ORG Mon May 19 13:08:27 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4C96437B401 for ; Mon, 19 May 2003 13:08:27 -0700 (PDT) Received: from boreas.isi.edu (boreas.isi.edu [128.9.160.161]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8AAE543F75 for ; Mon, 19 May 2003 13:08:26 -0700 (PDT) (envelope-from larse@ISI.EDU) Received: from isi.edu (nik.isi.edu [128.9.168.58]) by boreas.isi.edu (8.11.6p2/8.11.2) with ESMTP id h4JK8I100811; Mon, 19 May 2003 13:08:18 -0700 (PDT) Message-ID: <3EC939B1.8020606@isi.edu> Date: Mon, 19 May 2003 13:08:17 -0700 From: Lars Eggert Organization: USC Information Sciences Institute User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.4b) Gecko/20030519 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Dan Nelson References: <20030511.143231.133432780.imp@bsdimp.com> <1052692357.4921.128.camel@cf.freebsd-services.com> <16062.59918.302092.929640@curly.cs.duke.edu> <1052703871.4921.146.camel@cf.freebsd-services.com> <16063.38255.961273.900146@grasshopper.cs.duke.edu> <20030512124753.GA48753@survey.codeburst.net> <16063.39366.930707.980678@grasshopper.cs.duke.edu> <20030512130949.GB48440@survey.codeburst.net> <1053372251.815.50.camel@cf.freebsd-services.com> <3EC93331.7090004@isi.edu> <20030519200002.GE39543@dan.emsphone.com> In-Reply-To: <20030519200002.GE39543@dan.emsphone.com> X-Enigmail-Version: 0.75.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms070202040807040203040103" cc: Andrew Gallatin cc: current@freebsd.org Subject: Re: Interrupt latency problems X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 May 2003 20:08:27 -0000 This is a cryptographically signed message in MIME format. --------------ms070202040807040203040103 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Dan Nelson wrote: > In the last episode (May 19), Lars Eggert said: > >>Paul Richards wrote: >> >>>I'm also not sure why a lot more people aren't seeing this, unless >>>my motherboard is odd in sharing the acpi interrupt with a pci >>>slot. >> >>I tried to see if this is the case on my SMP board, but I don't seem >>to have acpi attached to any interrupt: >> >>[root@nik: ~] ps -axg | grep irq >> 24 ?? WL 0:00.00 (irq18: mpt0) >> 25 ?? WL 0:19.30 (irq19: em0 mpt1) >> 26 ?? WL 0:00.00 (irq16: xl0 uhci1) >> 27 ?? WL 1:57.07 (irq17: fwohci0 drm0) >> 28 ?? WL 1:09.27 (irq13: em1 ichsmb0) >> 29 ?? WL 0:00.02 (irq20: pcm0) >> 30 ?? WL 0:02.19 (irq2: uhci0 bktr0) >> 31 ?? WL 0:02.84 (irq14: ata0) >> 32 ?? WL 0:00.00 (irq15: ata1) >> 36 ?? WL 0:00.00 (irq6: fdc0) >> 37 ?? WL 0:00.00 (irq1: atkbd0) >> >>Is this the right way to check for this? > > > You sure you have acpi loaded? It shows up for me: > > $ ps ax | grep acpi0 > 22 ?? WL 0:00.00 (irq9: acpi0) I'm pretty sure I do - maybe acpi irq handling is different with an SMP kernel? [larse@nik: ~] ps ax | grep acpi 5 ?? IL 0:00.00 (acpi_task0) 6 ?? IL 0:00.00 (acpi_task1) 7 ?? IL 0:00.00 (acpi_task2) 78714 p4 LV+ 0:00.00 grep acpi (tcsh) [larse@nik: ~] kldstat | grep acpi 46 1 0xc068b000 48514 acpi.ko [larse@nik: ~] grep -i acpi /var/run/dmesg.boot Preloaded elf module "/boot/kernel/acpi.ko" at 0xc06d6fa8. Features=0x3febfbff acpi0: on motherboard acpi0: power button is handled as a fixed feature programming model. Timecounter "ACPI-fast" frequency 3579545 Hz acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0 acpi_cpu0: on acpi0 acpi_cpu1: on acpi0 acpi_cpu2: on acpi0 acpi_cpu3: on acpi0 <...> > Maybe the attach message to acpi should print the IRQ it's using. All > I get in dmesg is "acpi0: on motherboard". Lars -- Lars Eggert USC Information Sciences Institute --------------ms070202040807040203040103 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJtjCC AzgwggKhoAMCAQICEGZFcrfMdPXPY3ZFhNAukQEwDQYJKoZIhvcNAQEEBQAwgdExCzAJBgNV BAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgG A1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24gU2Vydmlj ZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTErMCkG CSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMDA4MzAwMDAw MDBaFw0wNDA4MjcyMzU5NTlaMIGSMQswCQYDVQQGEwJaQTEVMBMGA1UECBMMV2VzdGVybiBD YXBlMRIwEAYDVQQHEwlDYXBlIFRvd24xDzANBgNVBAoTBlRoYXd0ZTEdMBsGA1UECxMUQ2Vy dGlmaWNhdGUgU2VydmljZXMxKDAmBgNVBAMTH1BlcnNvbmFsIEZyZWVtYWlsIFJTQSAyMDAw 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