From owner-freebsd-hackers Tue Jan 29 13:28:27 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from seven.Alameda.net (seven.Alameda.net [64.81.63.137]) by hub.freebsd.org (Postfix) with ESMTP id 4783137B405 for ; Tue, 29 Jan 2002 13:28:19 -0800 (PST) Received: by seven.Alameda.net (Postfix, from userid 1000) id 043463A251; Tue, 29 Jan 2002 13:28:18 -0800 (PST) Date: Tue, 29 Jan 2002 13:28:18 -0800 From: Ulf Zimmermann To: hackers@FreeBSD.org Subject: Problems with 4.5-RC/-STABLE Message-ID: <20020129132818.F13765@seven.alameda.net> Reply-To: ulf@Alameda.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i Organization: Alameda Networks, Inc. X-Operating-System: FreeBSD 4.4-STABLE Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I have a machine with an AMD 1ghz and an IBM UMDA 100 disk. Until about 12-13 days ago (Jan 16-17), this machine was nice and fast on disk IO. I haven't done much io wise on the machine in the days since I did that last buildworld, but when I tried to buildworld yesterday and today, I am getting pretty often: Jan 29 13:16:09 ulfbsd /kernel: ad0: WRITE command timeout tag=0 serv=0 - resetting Jan 29 13:16:11 ulfbsd /kernel: ata0: resetting devices .. done Jan 29 13:19:06 ulfbsd /kernel: ad0: WRITE command timeout tag=0 serv=0 - resetting Jan 29 13:19:06 ulfbsd /kernel: ata0: resetting devices .. done Jan 29 13:22:17 ulfbsd /kernel: ad0: WRITE command timeout tag=0 serv=0 - resetting Jan 29 13:22:20 ulfbsd /kernel: ata0: resetting devices .. done Jan 29 13:22:56 ulfbsd /kernel: ad0: READ command timeout tag=0 serv=0 - resetting Jan 29 13:23:03 ulfbsd /kernel: ata0: resetting devices .. done This only happens under "heavy" io, and looking at "systat -vm" the io is not very fast: Disks ad0 acd0 fd0 md0 1884 ofod intrn KB/t 8.00 0.00 0.00 0.00 %slo-z 61984 buf tps 12 0 0 0 2084 tfree 400 dirtybuf MB/s 0.09 0.00 0.00 0.00 32528 desiredvnodes % busy 100 0 0 0 8132 numvnodes Disks ad0 acd0 fd0 md0 ofod intrn KB/t 22.39 0.00 0.00 0.00 %slo-z 61984 buf tps 17 0 0 0 tfree 123 dirtybuf MB/s 0.38 0.00 0.00 0.00 32528 desiredvnodes % busy 100 0 0 0 8132 numvnodes The MB/s is always below .4, % busy always at 100. CPU load itself is below 1. Nothing in regards to hardware has changed in this machine for many weeks. Here is the dmesg from boot: Copyright (c) 1992-2002 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 4.5-STABLE #8: Mon Jan 28 15:52:55 PST 2002 root@ulfbsd.autodaq.com:/usr/obj/usr/src/sys/ULFTOY Timecounter "i8254" frequency 1193182 Hz CPU: AMD Athlon(tm) Processor (1000.04-MHz 686-class CPU) Origin = "AuthenticAMD" Id = 0x642 Stepping = 2 Features=0x183f9ff AMD Features=0xc0440000<,AMIE,DSP,3DNow!> real memory = 536805376 (524224K bytes) config> q avail memory = 518705152 (506548K bytes) Preloaded elf kernel "kernel" at 0xc03ee000. Preloaded userconfig_script "/boot/kernel.conf" at 0xc03ee09c. Preloaded elf module "agp.ko" at 0xc03ee0ec. Pentium Pro MTRR support enabled md0: Malloc disk Using $PIR table, 8 entries at 0xc00fddf0 npx0: on motherboard npx0: INT 16 interface pcib0: on motherboard pci0: on pcib0 agp0: mem 0xd8000000-0xdbffffff at device 0.0 on pci0 pcib1: at device 1.0 on pci0 pci1: on pcib1 pci1: at 0.0 irq 11 isab0: at device 7.0 on pci0 isa0: on isab0 atapci0: port 0xd000-0xd00f at device 7.1 on pci0 atapci0: Correcting VIA config for southbridge data corruption bug ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 uhci0: port 0xd400-0xd41f irq 9 at device 7.2 on pci0 usb0: on uhci0 usb0: USB revision 1.0 uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered ums0: Logitech USB Mouse, rev 1.10/6.10, addr 2, iclass 3/1 ums0: 3 buttons and Z dir. uhub1: Genesys Logic, Inc. USB Hub, class 9/0, rev 1.01/0.12, addr 3 uhub1: 4 ports with 4 removable, bus powered uhci1: port 0xd800-0xd81f irq 9 at device 7.3 on pci0 usb1: on uhci1 usb1: USB revision 1.0 uhub2: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub2: 2 ports with 2 removable, self powered chip0: at device 7.4 on pci0 fxp0: port 0xe000-0xe01f mem 0xdf000000-0xdf0fffff,0xdf100000-0xdf100fff irq 11 at device 9.0 on pci0 fxp0: Ethernet address 00:a0:c9:a0:7f:72 inphy0: on miibus0 inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto rl0: port 0xe400-0xe4ff mem 0xdf101000-0xdf1010ff irq 10 at device 10.0 on pci0 rl0: Ethernet address: 00:50:ba:8f:cb:28 miibus1: on rl0 rlphy0: on miibus1 rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto pcm0: port 0xe800-0xe83f irq 5 at device 11.0 on pci0 orm0: