amd64/122695: [cpufreq] Lack of cpufreq control using amd64 eith core2 duo or quad

Thu May 14 18:00:15 UTC 2009

The following reply was made to PR amd64/122695; it has been noted by GNATS.

From: Bob Frazier <bobf at mrp3.com>
To: bug-followup at FreeBSD.org, freebsd-amd64 at FreeBSD.org
Cc:  
Subject: Re: amd64/122695: [cpufreq] Lack of cpufreq control using amd64 eith
 core2 duo or quad
Date: Thu, 14 May 2009 10:44:35 -0700

 I appear to be having a similar problem, and would like to provide additional information that (hopefully) will help to resolve it.

 1.  when running powerd, whenever the cpu frequency drops below the maximum (2100) value, cpu performance [based on keystroke 
 echo and general display slowness] appears to be at the LOWEST possible frequency.  As a result, CPU usage indicates above 100% 
 nearly all of the time, and immediately reverts the CPU to its maximum frequency [as it should].

 2.  setting the sysctl variable dev.cpu.0.freq manually to any of the frequencies listed in dev.cpu.0.freq_levels causes the 
 same thing to happen.

 3.  hardware:  HP Pavilion dv7 laptop with amd64 dual core, running FreeBSD 7.2 pre-release from April 28 [this problem was in 
 earlier 7.x versions as well].

 4.  eliminating the cpufreq driver by adding hint.acpi_throttle.0.disabled="1" to loader.conf only disabled the ability to 
 change frequencies [no other driver was available to do the job] so there's no obvious workaround.

 5.  'uname -a' output

 FreeBSD BSDSilver.SFT.local 7.2-PRERELEASE FreeBSD 7.2-PRERELEASE #0: Tue Apr 28 14:42:19 PDT 2009 
 bobf at BSDSilver.SFT.local:/usr/obj/usr/src/sys/GENERIC2  amd64

 [note:  the 'GENERIC2' config is really the same as 'GENERIC']

 6.  dmesg output

 Copyright (c) 1992-2009 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 is a registered trademark of The FreeBSD Foundation.
 FreeBSD 7.2-PRERELEASE #0: Tue Apr 28 14:42:19 PDT 2009
      bobf at BSDSilver.SFT.local:/usr/obj/usr/src/sys/GENERIC2
 Timecounter "i8254" frequency 1193182 Hz quality 0
 CPU: AMD Turion(tm) X2 Dual-Core Mobile RM-72 (2100.08-MHz K8-class CPU)
    Origin = "AuthenticAMD"  Id = 0x200f31  Stepping = 1
    Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
    Features2=0x2001<SSE3,CX16>
    AMD Features=0xea500800<SYSCALL,NX,MMX+,FFXSR,RDTSCP,LM,3DNow!+,3DNow!>
    AMD Features2=0x131f<LAHF,CMP,SVM,ExtAPIC,CR8,Prefetch,<b9>,<b12>>
    TSC: P-state invariant
    Cores per package: 2
 usable memory = 4011659264 (3825 MB)
 avail memory  = 3831726080 (3654 MB)
 ACPI APIC Table: <HPQOEM SLIC-MPC>
 FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
   cpu0 (BSP): APIC ID:  0
   cpu1 (AP): APIC ID:  1
 ioapic0: Changing APIC ID to 4
 ioapic0 <Version 2.1> irqs 0-23 on motherboard
 kbd1 at kbdmux0
 acpi0: <HPQOEM SLIC-MPC> on motherboard
 acpi0: [ITHREAD]
 acpi0: Power Button (fixed)
 Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
 acpi_timer0: <32-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
 acpi_ec0: <Embedded Controller: GPE 0x3> port 0x62,0x66 on acpi0
 acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
 acpi_hpet0: HPET never increments, disabling
 device_attach: acpi_hpet0 attach returned 6
 acpi_button0: <Power Button> on acpi0
 pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
 pci0: <ACPI PCI bus> on pcib0
 pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
 pci1: <ACPI PCI bus> on pcib1
 vgapci0: <VGA-compatible display> port 0x7000-0x70ff mem 0xc0000000-0xcfffffff,0xd2400000-0xd240ffff,0xd2300000-0xd23fffff irq 
 18 at device 5.0 on pci1
 pci1: <multimedia, HDA> at device 5.1 (no driver attached)
 pcib2: <ACPI PCI-PCI bridge> at device 4.0 on pci0
 pci2: <ACPI PCI bus> on pcib2
 pcib3: <ACPI PCI-PCI bridge> at device 5.0 on pci0
 pci8: <ACPI PCI bus> on pcib3
 pci8: <base peripheral> at device 0.0 (no driver attached)
 pci8: <base peripheral, SD host controller> at device 0.2 (no driver attached)
 pci8: <base peripheral> at device 0.3 (no driver attached)
 pci8: <base peripheral> at device 0.4 (no driver attached)
 pcib4: <ACPI PCI-PCI bridge> at device 6.0 on pci0
 pci9: <ACPI PCI bus> on pcib4
 pci9: <network> at device 0.0 (no driver attached)
 pcib5: <ACPI PCI-PCI bridge> at device 7.0 on pci0
 pci10: <ACPI PCI bus> on pcib5
 re0: <RealTek 8101E/8102E/8102EL PCIe 10/100baseTX> port 0x2000-0x20ff mem 0xd1010000-0xd1010fff,0xd1000000-0xd100ffff irq 19 at 
 device 0.0 on pci10
 re0: Using 1 MSI messages
 re0: Chip rev. 0x24800000
 re0: MAC rev. 0x00000000
 miibus0: <MII bus> on re0
 rlphy0: <RTL8201L 10/100 media interface> PHY 1 on miibus0
 rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
 re0: Ethernet address: 00:1e:ec:fe:df:1a
 re0: [FILTER]
 atapci0: <ATI AHCI controller> port 0x8038-0x803f,0x804c-0x804f,0x8030-0x8037,0x8048-0x804b,0x8010-0x801f mem 
 0xd2508000-0xd25083ff irq 22 at device 17.0 on pci0
 atapci0: [ITHREAD]
 atapci0: AHCI Version 01.10 controller with 6 ports detected
 ata2: <ATA channel 0> on atapci0
 ata2: [ITHREAD]
 ata3: <ATA channel 1> on atapci0
 ata3: [ITHREAD]
 ata4: <ATA channel 2> on atapci0
 ata4: [ITHREAD]
 ata5: <ATA channel 3> on atapci0
 ata5: [ITHREAD]
 ata6: <ATA channel 4> on atapci0
 ata6: [ITHREAD]
 ata7: <ATA channel 5> on atapci0
 ata7: [ITHREAD]
 ohci0: <OHCI (generic) USB controller> mem 0xd2507000-0xd2507fff irq 16 at device 18.0 on pci0
 ohci0: [GIANT-LOCKED]
 ohci0: [ITHREAD]
 usb0: OHCI version 1.0, legacy support
 usb0: <OHCI (generic) USB controller> on ohci0
 usb0: USB revision 1.0
 uhub0: <ATI OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
 uhub0: 3 ports with 3 removable, self powered
 ohci1: <OHCI (generic) USB controller> mem 0xd2506000-0xd2506fff irq 16 at device 18.1 on pci0
 ohci1: [GIANT-LOCKED]
 ohci1: [ITHREAD]
 usb1: OHCI version 1.0, legacy support
 usb1: <OHCI (generic) USB controller> on ohci1
 usb1: USB revision 1.0
 uhub1: <ATI OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
 uhub1: 3 ports with 3 removable, self powered
 ehci0: <EHCI (generic) USB 2.0 controller> mem 0xd2508500-0xd25085ff irq 17 at device 18.2 on pci0
 ehci0: [GIANT-LOCKED]
 ehci0: [ITHREAD]
 usb2: EHCI version 1.0
 usb2: companion controllers, 3 ports each: usb0 usb1
 usb2: <EHCI (generic) USB 2.0 controller> on ehci0
 usb2: USB revision 2.0
 uhub2: <ATI EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb2
 uhub2: 6 ports with 6 removable, self powered
 ugen0: <Image Processor HP Webcam, class 239/2, rev 2.00/11.16, addr 2> on uhub2
 ohci2: <OHCI (generic) USB controller> mem 0xd2505000-0xd2505fff irq 18 at device 19.0 on pci0
 ohci2: [GIANT-LOCKED]
 ohci2: [ITHREAD]
 usb3: OHCI version 1.0, legacy support
 usb3: <OHCI (generic) USB controller> on ohci2
 usb3: USB revision 1.0
 uhub3: <ATI OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb3
 uhub3: 3 ports with 3 removable, self powered
 ohci3: <OHCI (generic) USB controller> mem 0xd2504000-0xd2504fff irq 18 at device 19.1 on pci0
 ohci3: [GIANT-LOCKED]
 ohci3: [ITHREAD]
 usb4: OHCI version 1.0, legacy support
 usb4: <OHCI (generic) USB controller> on ohci3
 usb4: USB revision 1.0
 uhub4: <ATI OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb4
 uhub4: 3 ports with 3 removable, self powered
 ehci1: <EHCI (generic) USB 2.0 controller> mem 0xd2508400-0xd25084ff irq 19 at device 19.2 on pci0
 ehci1: [GIANT-LOCKED]
 ehci1: [ITHREAD]
 usb5: EHCI version 1.0
 usb5: companion controllers, 3 ports each: usb3 usb4
 usb5: <EHCI (generic) USB 2.0 controller> on ehci1
 usb5: USB revision 2.0
 uhub5: <ATI EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb5
 uhub5: 6 ports with 6 removable, self powered
 pci0: <serial bus, SMBus> at device 20.0 (no driver attached)
 atapci1: <ATI IXP700 UDMA133 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x8000-0x800f irq 16 at device 20.1 on pci0
 ata0: <ATA channel 0> on atapci1
 ata0: [ITHREAD]
 pci0: <multimedia, HDA> at device 20.2 (no driver attached)
 isab0: <PCI-ISA bridge> at device 20.3 on pci0
 isa0: <ISA bus> on isab0
 pcib6: <ACPI PCI-PCI bridge> at device 20.4 on pci0
 pci128: <ACPI PCI bus> on pcib6
 acpi_acad0: <AC Adapter> on acpi0
 acpi_lid0: <Control Method Lid Switch> on acpi0
 acpi_tz0: <Thermal Zone> on acpi0
 acpi_tz0: _HOT value is absurd, ignored (226.8C)
 atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
 atkbd0: <AT Keyboard> irq 1 on atkbdc0
 kbd0 at atkbd0
 atkbd0: [GIANT-LOCKED]
 atkbd0: [ITHREAD]
 psm0: <PS/2 Mouse> irq 12 on atkbdc0
 psm0: [GIANT-LOCKED]
 psm0: [ITHREAD]
 psm0: model Generic PS/2 mouse, device ID 0
 battery0: <ACPI Control Method Battery> on acpi0
 cpu0: <ACPI CPU> on acpi0
 acpi_throttle0: <ACPI CPU Throttling> on cpu0
 cpu1: <ACPI CPU> on acpi0
 acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
 Timecounter "HPET" frequency 14318180 Hz quality 900
 ppc0: cannot reserve I/O port range
 sc0: <System console> at flags 0x100 on isa0
 sc0: VGA <16 virtual consoles, flags=0x300>
 sio0: configured irq 4 not in bitmap of probed irqs 0
 sio0: port may not be enabled
 sio0: configured irq 4 not in bitmap of probed irqs 0
 sio0: port may not be enabled
 sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
 sio0: type 8250 or not responding
 sio0: [FILTER]
 sio1: configured irq 3 not in bitmap of probed irqs 0
 sio1: port may not be enabled
 vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
 Timecounters tick every 1.000 msec
 ad4: 305245MB <FUJITSU MHZ2320BH G2 8909> at ata2-master SATA300
 acd0: DVDR <TSSTcorp CDDVDW TS-L633L/0400> at ata5-master SATA150
 SMP: AP CPU #1 Launched!
 GEOM_LABEL: Label for provider ad4s1a is ufsid/49695f53d076770c.
 GEOM_LABEL: Label for provider ad4s1d is ufsid/49695f5ef847b65e.
 GEOM_LABEL: Label for provider ad4s1e is ufsid/49695f53e3199c89.
 GEOM_LABEL: Label for provider ad4s1f is ufsid/49695f532bffd410.
 Trying to mount root from ufs:/dev/ad4s1a
 GEOM_LABEL: Label ufsid/49695f53d076770c removed.
 GEOM_LABEL: Label for provider ad4s1a is ufsid/49695f53d076770c.
 GEOM_LABEL: Label ufsid/49695f53e3199c89 removed.
 GEOM_LABEL: Label for provider ad4s1e is ufsid/49695f53e3199c89.
 GEOM_LABEL: Label ufsid/49695f532bffd410 removed.
 GEOM_LABEL: Label for provider ad4s1f is ufsid/49695f532bffd410.
 GEOM_LABEL: Label ufsid/49695f5ef847b65e removed.
 GEOM_LABEL: Label for provider ad4s1d is ufsid/49695f5ef847b65e.
 GEOM_LABEL: Label ufsid/49695f53d076770c removed.
 GEOM_LABEL: Label ufsid/49695f53e3199c89 removed.
 GEOM_LABEL: Label ufsid/49695f532bffd410 removed.
 GEOM_LABEL: Label ufsid/49695f5ef847b65e removed.
 hdac0: <ATI SB600 High Definition Audio Controller> mem 0xd2500000-0xd2503fff irq 16 at device 20.2 on pci0
 hdac0: HDA Driver Revision: 20090329_0131
 hdac0: [ITHREAD]
 hdac0: HDA Codec #0: IDT 92HD71B7
 hdac0: HDA Codec #1: Lucent/Agere Systems (Unknown)
 hdac1: <ATI RS780 High Definition Audio Controller> mem 0xd2410000-0xd2413fff irq 19 at device 5.1 on pci1
 hdac1: HDA Driver Revision: 20090329_0131
 hdac1: [ITHREAD]
 hdac1: HDA Codec #0: ATI RS690/780 HDMI
 pcm0: <HDA IDT 92HD71B7 PCM #0 Analog> at cad 0 nid 1 on hdac0
 pcm1: <HDA IDT 92HD71B7 PCM #1 Analog> at cad 0 nid 1 on hdac0
 pcm2: <HDA IDT 92HD71B7 PCM #2 Digital> at cad 0 nid 1 on hdac0
 pcm3: <HDA ATI RS690/780 HDMI PCM #0 Digital> at cad 0 nid 1 on hdac1
 pcm0:virtual:dsp0.vp0: play interrupt timeout, channel dead

 7.  additional sysctl information

 dev.cpu.0.%desc: ACPI CPU
 dev.cpu.0.%driver: cpu
 dev.cpu.0.%location: handle=\_PR_.CPU0
 dev.cpu.0.%pnpinfo: _HID=none _UID=0
 dev.cpu.0.%parent: acpi0
 dev.cpu.0.freq: 1837
 dev.cpu.0.freq_levels: 2100/-1 1837/-1 1575/-1 1312/-1 1050/-1 787/-1 525/-1 262/-1
 dev.cpu.0.cx_supported: C1/0
 dev.cpu.0.cx_lowest: C1
 dev.cpu.0.cx_usage: 100.00%
 dev.cpu.1.%desc: ACPI CPU
 dev.cpu.1.%driver: cpu
 dev.cpu.1.%location: handle=\_PR_.CPU1
 dev.cpu.1.%pnpinfo: _HID=none _UID=0
 dev.cpu.1.%parent: acpi0
 dev.cpu.1.cx_supported: C1/0
 dev.cpu.1.cx_lowest: C1
 dev.cpu.1.cx_usage: 100.00%
 dev.cpufreq.0.%driver: cpufreq
 dev.cpufreq.0.%parent: cpu0