From owner-freebsd-stable Thu Jul 19 20:34:56 2001 Delivered-To: freebsd-stable@freebsd.org Received: from schoolie.there.net (segv.bitslap.net [208.25.77.10]) by hub.freebsd.org (Postfix) with ESMTP id 06EE437B406 for ; Thu, 19 Jul 2001 20:34:53 -0700 (PDT) (envelope-from rrs@there.net) Received: from localhost (localhost [127.0.0.1]) by schoolie.there.net (Postfix) with ESMTP id CDA2F14327 for ; Thu, 19 Jul 2001 20:35:42 -0700 (PDT) Date: Thu, 19 Jul 2001 20:35:42 -0700 (PDT) From: Rob Schulhof Reply-To: rrs@schoolie.there.net To: freebsd-stable@freebsd.org Subject: High interrupt rate Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I'm puzzled why my system is spending 1% of CPU on system interrupts when completely idle. I even with avery thing killed except kernel proceses top and vmstat show 0.8% is spent servicing interrupts. A 'vmstat -i' shows the only interrupts set are the CLK and RTC. Anybody come across this? I'm assuming it's a hardware problem. Thanks, Rob 4.3-STABLE FreeBSD 4.3-STABLE #0: Mon Jul 16 21:41:28 PDT Athlon 1.4GHZ EP-8K7A motherboard ATAPI CD-ROM drive Adaptec 2940UW with 2 disks ATI Xpert 2000 card SB PCI128 sound card 256MB Kingston DDR RAM dmesg: Copyright (c) 1992-2001 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 4.3-STABLE #0: Mon Jul 16 21:41:28 PDT 2001 root@schoolie.there.net:/usr/src/sys/compile/SCHOOLIE Timecounter "i8254" frequency 1193182 Hz Timecounter "TSC" frequency 1400059547 Hz CPU: AMD Athlon(tm) processor (1400.06-MHz 686-class CPU) Origin = "AuthenticAMD" Id = 0x642 Stepping = 2 Features=0x183f9ff AMD Features=0xc0440000<,AMIE,DSP,3DNow!> real memory = 268435456 (262144K bytes) avail memory = 258154496 (252104K bytes) Preloaded elf kernel "kernel" at 0xc0329000. Pentium Pro MTRR support enabled md0: Malloc disk npx0: on motherboard npx0: INT 16 interface pcib0: on motherboard pci0: on pcib0 pcib1: at device 1.0 on pci0 pci1: on pcib1 pci1: at 5.0 irq 10 isab0: at device 7.0 on pci0 isa0: on isab0 atapci0: port 0xd400-0xd40f at device 7.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 chip1: at device 7.4 on pci0 ahc0: port 0xe400-0xe4ff mem 0xeb000000-0xeb000fff irq 15 at device 9.0 on pci0 aic7880: Wide Channel A, SCSI Id=7, 16/255 SCBs xl0: <3Com 3c905B-TX Fast Etherlink XL> port 0xe800-0xe87f mem 0xeb002000-0xeb00207f irq 11 at device 10.0 on pci0 xl0: Ethernet address: 00:50:04:1b:8b:6e miibus0: on xl0 xlphy0: <3Com internal media interface> on miibus0 xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto pcm0: port 0xec00-0xec3f irq 11 at device 12.0 on pci0 vt0 on isa0 vt0: generic, 80 col, color, 8 scr, mf2-kbd, [R3.20-b24] vt0: driver is using old-style compatability shims orm0: