From owner-freebsd-bugs Tue Mar 13 19:20: 9 2001 Delivered-To: freebsd-bugs@hub.freebsd.org Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by hub.freebsd.org (Postfix) with ESMTP id BF8A937B71A for ; Tue, 13 Mar 2001 19:20:00 -0800 (PST) (envelope-from gnats@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.11.1/8.11.1) id f2E3K0F60343; Tue, 13 Mar 2001 19:20:00 -0800 (PST) (envelope-from gnats) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by hub.freebsd.org (Postfix) with ESMTP id 09C5337B719 for ; Tue, 13 Mar 2001 19:16:57 -0800 (PST) (envelope-from nobody@FreeBSD.org) Received: (from nobody@localhost) by freefall.freebsd.org (8.11.1/8.11.1) id f2E3Gvi59920; Tue, 13 Mar 2001 19:16:57 -0800 (PST) (envelope-from nobody) Message-Id: <200103140316.f2E3Gvi59920@freefall.freebsd.org> Date: Tue, 13 Mar 2001 19:16:57 -0800 (PST) From: piechota@argolis.org To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-1.0 Subject: kern/25788: microuptime() weny backwards, again Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >Number: 25788 >Category: kern >Synopsis: microuptime() weny backwards, again >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Mar 13 19:20:00 PST 2001 >Closed-Date: >Last-Modified: >Originator: Matt Piechota >Release: FreeBSD 4.2-STABLE >Organization: >Environment: FreeBSD cithaeron.argolis.org 4.2-STABLE FreeBSD 4.2-STABLE #1: Wed Feb 28 11:30:32 EST 2001 i386 >Description: I get microuptime() went backwards messages on the console every once in awhile. I can't exactly determine how to set them off, but just normal machine use does it. I wouldn't much care it it wouldn't crash my named about half the time. This has only started to happen since I moved to 4.X. This machine ran 3.3-3.5 for almost a year with no problems. IT was cvssupped around Feb 28 from the 4.X-STABLE tree. Epox motherboard, with an AMD K6-2 350 on it. Other PRs mentioned UDMA causing trouble, but this system runs off an Adaptec 2940UW (except the CDROM, but that hasn't been used since the install). The BIOS power management is turned off, and I don't have APM in the kernel. sysctl kern.timecounter returns: kern.timecounter.method: 0 kern.timecounter.hardware: i8254 dmesg is currently: 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 4.2-STABLE #1: Wed Feb 28 11:30:32 EST 2001 root@cithaeron.argolis.org:/usr/obj/usr/src/sys/CITHAERON Timecounter "i8254" frequency 1193182 Hz CPU: AMD-K6(tm) 3D processor (350.80-MHz 586-class CPU) Origin = "AuthenticAMD" Id = 0x58c Stepping = 12 Features=0x8021bf AMD Features=0x80000800 real memory = 67108864 (65536K bytes) config> q avail memory = 61890560 (60440K bytes) Preloaded elf kernel "kernel" at 0xc0368000. Preloaded userconfig_script "/boot/kernel.conf" at 0xc036809c. K6-family MTRR support enabled (2 registers) md0: Malloc disk npx0: on motherboard npx0: INT 16 interface pcib0: on motherboard pci0: on pcib0 pcib2: at device 1.0 on pci0 pci1: on pcib2 isab0: at device 7.0 on pci0 isa0: on isab0 atapci0: port 0xd000-0xd00f at device 7.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 uhci0: port 0xd400-0xd41f irq 11 at device 7.2 on pc i0 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 ahc0: port 0xd800-0xd8ff mem 0xe7102000-0xe710 2fff irq 10 at device 8.0 on pci0 aic7880: Wide Channel A, SCSI Id=7, 16/255 SCBs fxp0: port 0xdc00-0xdc1f mem 0xe7000000-0xe70f ffff,0xe7100000-0xe7100fff irq 12 at device 9.0 on pci0 fxp0: Ethernet address 00:a0:c9:05:ff:fd de0: port 0xe000-0xe07f mem 0xe7101000-0xe710107f irq 5 at device 10.0 on pci0 de0: 21041 [10Mb/s] pass 2.1 de0: address 00:40:05:36:57:f1 pcib1: on motherboard pci2: on pcib1 fdc0: at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0 fdc0: FIFO enabled, 8 bytes threshold fd0: <1440-KB 3.5" drive> on fdc0 drive 0 atkbdc0: at port 0x60,0x64 on isa0 atkbd0: flags 0x1 irq 1 on atkbdc0 kbd0 at atkbd0 vga0: at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 sc0: at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16550A ppc0: at port 0x378-0x37f irq 7 on isa0 ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode ppc0: FIFO with 16/16/16 bytes threshold ppi0: on ppbus0 plip0: on ppbus0 lpt0: on ppbus0 lpt0: Interrupt-driven port de0: enabling 10baseT port IP packet filtering initialized, divert enabled, rule-based forwarding enabled, default to deny, logging disabled acd0: CDROM at ata1-slave using PIO3 Waiting 15 seconds for SCSI devices to settle Mounting root from ufs:/dev/da0s1a da1 at ahc0 bus 0 target 4 lun 0 da1: Fixed Direct Access SCSI-2 device da1: 20.000MB/s transfers (20.000MHz, offset 15), Tagged Queueing Enabled da1: 6180MB (12657717 512 byte sectors: 255H 63S/T 787C) da0 at ahc0 bus 0 target 1 lun 0 da0: Fixed Direct Access SCSI-2 device da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing Enabled da0: 4340MB (8888924 512 byte sectors: 255H 63S/T 553C) microuptime() went backwards (92961.922154 -> 92961.-694746181) microuptime() went backwards (99894.857770 -> 99894.850112) microuptime() went backwards (100534.398866 -> 100534.-695217375) microuptime() went backwards (128117.346728 -> 128117.-695315098) microuptime() went backwards (130449.738615 -> 130449.-694932866) microuptime() went backwards (133120.999845 -> 133120.-694639703) pid 250 (named), uid 0: exited on signal 6 (core dumped) microuptime() went backwards (474987.078609 -> 474987.-695597242) microuptime() went backwards (629762.606331 -> 629762.598829) microuptime() went backwards (630099.144628 -> 630099.136070) pid 19428 (named), uid 0: exited on signal 6 (core dumped) I've read though the other PRs on this issue, none of the solutions seem to work. Am I SOL? >How-To-Repeat: It seems to happen through normal system use, although the it took a break for 4 days this time, after happening about 3 times a day the 2 previous days, twice yesterday, but not at all today. (it's 10pm right now). I haven't been using the system oddly on the days it happened (or didn't happen). >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message