Date: Fri, 23 Nov 2001 06:22:37 -0800 (PST) From: Alan Edmonds <kb5zuy@airmail.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/32226: time of day clock runs fast (approx twice as fast) Message-ID: <200111231422.fANEMbS51830@freefall.freebsd.org>
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>Number: 32226 >Category: kern >Synopsis: time of day clock runs fast (approx twice as fast) >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Nov 23 06:30:01 PST 2001 >Closed-Date: >Last-Modified: >Originator: Alan Edmonds >Release: -current cvsuped 22 Nov >Organization: >Environment: FreeBSD ernest 5.0-CURRENT FreeBSD 5.0-CURRENT #5: Fri Nov 23 09:16:41 GMT 2001 root@ernest:/usr/obj/usr/src/sys/TPAD i386 >Description: the time of day clock runs fast. For example: $ date; sleep 5; date Fri Nov 23 14:12:55 GMT 2001 Fri Nov 23 14:13:05 GMT 2001 $ sysctl kern.timecounter.hardware=TSC $ date; sleep 5; date Fri Nov 23 14:13:17 GMT 2001 Fri Nov 23 14:13:22 GMT 2001 In both cases, the subjective time was 5 seconds. Here is a dmesg output. $ 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 5.0-CURRENT #5: Fri Nov 23 09:16:41 GMT 2001 root@uk-demo-6:/usr/obj/usr/src/sys/TPAD Preloaded elf kernel "/boot/kernel/kernel" at 0xc03af000. Preloaded elf module "/boot/kernel/if_wi.ko" at 0xc03af0a8. Preloaded elf module "/boot/kernel/snd_pcm.ko" at 0xc03af154. Preloaded elf module "/boot/kernel/snd_solo.ko" at 0xc03af200. Preloaded elf module "/boot/kernel/atspeaker.ko" at 0xc03af2b0. Preloaded elf module "/boot/kernel/apm.ko" at 0xc03af360. Preloaded elf module "/boot/kernel/acpi.ko" at 0xc03af408. Timecounter "i8254" frequency 1193182 Hz Timecounter "TSC" frequency 365809290 Hz CPU: Pentium II/Pentium II Xeon/Celeron (365.81-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x66a Stepping = 10 Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR> real memory = 67043328 (65472K bytes) avail memory = 61493248 (60052K bytes) Pentium Pro MTRR support enabled pcibios: No call entry point npx0: <math processor> on motherboard npx0: INT 16 interface acpi0: <IBM Hammer > on motherboard acpi0: power button is handled as a fixed feature programming model. Timecounter "ACPI" frequency 3579545 Hz acpi_timer0: <32-bit timer at 3.579545MHz> port 0xf108-0xf10b on acpi0 acpi_cpu0: <CPU> on acpi0 acpi_cpu: CLK_VAL field overflows P_CNT register acpi_cpu: CLK_VAL field overlaps THT_EN bit acpi_tz0: <thermal zone> on acpi0 acpi_tz1: <thermal zone> on acpi0 acpi_button0: <Sleep Button> on acpi0 acpi_pcib0: <Host-PCI bridge> port 0xcf8-0xcff on acpi0 pci0: <PCI bus> on acpi_pcib0 pcib1: <PCI-PCI bridge> at device 1.0 on pci0 pci1: <PCI bus> on pcib1 pci1: <display, VGA> at device 0.0 (no driver attached) pci0: <simple comms> at device 6.0 (no driver attached) isab0: <PCI-ISA bridge> at device 7.0 on pci0 isa0: <ISA bus> on isab0 pcm0: <ESS Solo-1 (unknown vendor)> port 0x78a4-0x78a7,0x7890-0x7893,0x7870-0x787f,0x7850-0x785f,0x7800-0x783f irq 5 at device 8.0 on pci0 atapci0: <AcerLabs Aladdin ATA33 controller> port 0x78c0-0x78cf irq 15 at device 15.0 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 pci0: <bridge, PCI-unknown> at device 17.0 (no driver attached) pcic0: <O2micro 6832/6833 PCI-Cardbus Bridge> irq 9 at device 19.0 on pci0 pcic0: PCI Memory allocated: 0x44000000 pcic0: Warning: O2micro OZ68xx chips may not work pccard0: <PC Card bus (classic)> on pcic0 pcic1: <O2micro 6832/6833 PCI-Cardbus Bridge> irq 9 at device 19.1 on pci0 pcic1: PCI Memory allocated: 0x44001000 pcic1: Warning: O2micro OZ68xx chips may not work pccard1: <PC Card bus (classic)> on pcic1 ohci0: <AcerLabs M5237 (Aladdin-V) USB controller> mem 0x82100000-0x82100fff irq 10 at device 20.0 on pci0 usb0: OHCI version 1.0, legacy support usb0: <AcerLabs M5237 (Aladdin-V) USB controller> on ohci0 usb0: USB revision 1.0 uhub0: AcerLabs OHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered acpi_lid0: <Control Method Lid Switch> on acpi0 acpi_acad0: <AC adapter> on acpi0 acpi_cmbat0: <Control method Battery> on acpi0 atspeaker0 port 0x61 on acpi0 atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0 atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0 kbd0 at atkbd0 psm0: <PS/2 Mouse> irq 12 on atkbdc0 psm0: model Generic PS/2 mouse, device ID 0 fdc0: <NEC 72065B or clone> port 0x3f7,0x3f0-0x3f5 irq 6 on acpi0 fdc0: FIFO enabled, 8 bytes threshold fd0: <1440-KB 3.5" drive> on fdc0 drive 0 ppc0 port 0x3bc-0x3c3 irq 7 on acpi0 ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode ppi0: <Parallel I/O> on ppbus0 plip0: <PLIP network interface> on ppbus0 lpt0: <Printer> on ppbus0 lpt0: Interrupt-driven port sio0 port 0x3f8-0x3ff irq 4 on acpi0 sio0: type 16550A acpi_ec0: <embedded controller> port 0x66,0x62 on acpi0 ata-: ata0 already exists, skipping it ata-: ata1 already exists, skipping it atkbdc-: atkbdc0 already exists, skipping it fdc-: fdc0 already exists, skipping it pcic-: pcic0 already exists, skipping it pcic-: pcic1 already exists, skipping it ppc-: ppc0 already exists, skipping it sc-: sc0 already exists, skipping it sio-: sio0 already exists, skipping it vga-: vga0 already exists, skipping it orm0: <Option ROM> at iomem 0xc0000-0xcbfff on isa0 sc0: <System console> on isa0 sc0: VGA <16 virtual consoles, flags=0x200> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 pmtimer0 on isa0 sio1: configured irq 3 not in bitmap of probed irqs 0 ad0: 4645MB <IBM-DBCA-204860> [10068/15/63] at ata0-master UDMA33 acd0: CDROM <CRN-8241B> at ata1-master PIO4 Mounting root from ufs:/dev/ad0s2a pccard: card inserted, slot 0 pccard: card removed, slot 0 WARNING: / was not properly dismounted pccard: card inserted, slot 0 WARNING: /usr was not properly dismounted /usr: lost blocks 0 files 7 WARNING: /var was not properly dismounted wi0 at port 0x280-0x2c7 iomem 0xd4000-0xd43ff irq 9 flags 0x10000 slot 0 on pccard0 wi0: Ethernet address: 00:02:b3:04:b8:b8 $ >How-To-Repeat: See above. >Fix: I can fix the problem by setting the kern.timecounter.hardware variable to TSC (instead of ACPI). >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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