I just did a build of the world after seeing Philip Guenther's post on
better using C-states in ACPI for cooler CPU temperatures.
This is a *significant* improvement. I'm using a new ThinkPad, a w541.
During my first world build I saw temperatures as high as 94C. It did
not hit the fatal temperature to force a reboot but it was pretty hot.
This was at 3.3GHz.
After booting with the new kernel I wondered what the results would be.
Keeping track of hw.sensors.acpithinkpad0.temp3 on my older w500 would
typically be in the 86 - 92C range and then reboot if I was wasn't
careful.
This build the temperature was typically 78 - 80C, with one spike at
82C during the latter part of the xenocara build. My script checked
every 17 seconds. I can say from this one test that there is a huge
difference--10C, at least!
The last time I saw such a significant change to OpenBSD was when
soft deps came into the tree.
If you can run -current on your laptop, you should consider it. It
really is amazing. Later I will try to get a test jig in place such
that I can measure current draw and compare, but heat == power, so I'm
sure it's a success.
Thank you Philip, et al!
--STeve Andre'
ps: more on the w541 later and a description to dm...@openbsd.org.
---------- original email
Date: Sat, 13 Jun 2015 15:15:59 -0700
Subject: Re: CPU power consumption on thinkpad x201
From: Philip Guenther <guent...@gmail.com>
To: Jingcheng Zhang <dio...@gmail.com>
Cc: Shaun Reiger <srei...@sprmail.net>, "misc@openbsd.org"
<misc@openbsd.org>
On Thu, May 28, 2015 at 6:53 AM, Jingcheng Zhang <dio...@gmail.com> wrote:
> Another x201 user here, suffering from the same problem. Any
news/solutions
> on this issue?
I just committed support for using the deeper C-states advertised by
ACPI, which in testing dropped the temperature on most laptops.
Don't forget to send a dmesg to dm...@openbsd.org some time after you
upgrade, so we can check for any problems found by the code!
Philip Guenther
---------- w541 dmesg
OpenBSD 5.7-current (GENERIC.MP) #0: Mon Jun 8 20:49:25 EDT 2015
r...@paladin.home.network:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 33950375936 (32377MB)
avail mem = 32917573632 (31392MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.7 @ 0x7cd2d000 (68 entries)
bios0: vendor LENOVO version "GNET72WW (2.20 )" date 02/26/2015
bios0: LENOVO 20EGCTO1WW
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SLIC DBGP ECDT HPET APIC MCFG SSDT SSDT SSDT
SSDT SSDT SSDT SSDT PCCT SSDT TCP
A UEFI MSDM ASF! BATB FPDT UEFI
acpi0: wakeup devices LID_(S4) SLPB(S3) IGBE(S4) EXP2(S4) EXP3(S4)
XHCI(S3) EHC1(S3) EHC2(S3)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpiec0 at acpi0
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.31 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,ITSC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 99MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.15 MHz
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,IT
SC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 1, core 0, package 0
cpu2 at mainbus0: apid 2 (application processor)
cpu2: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.15 MHz
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,IT
SC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 1, package 0
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.15 MHz
cpu3:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,IT
SC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 1, core 1, package 0
cpu4 at mainbus0: apid 4 (application processor)
cpu4: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.15 MHz
cpu4:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,IT
SC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu4: 256KB 64b/line 8-way L2 cache
cpu4: smt 0, core 2, package 0
cpu5 at mainbus0: apid 5 (application processor)
cpu5: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.15 MHz
cpu5:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,IT
SC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu5: 256KB 64b/line 8-way L2 cache
cpu5: smt 1, core 2, package 0
cpu6 at mainbus0: apid 6 (application processor)
cpu6: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.15 MHz
cpu6:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,IT
SC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu6: 256KB 64b/line 8-way L2 cache
cpu6: smt 0, core 3, package 0
cpu7 at mainbus0: apid 7 (application processor)
cpu7: Intel(R) Core(TM) i7-4940MX CPU @ 3.10GHz, 798.15 MHz
cpu7:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,
SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,
SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,PERF,IT
SC,FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,SENSOR,ARAT
cpu7: 256KB 64b/line 8-way L2 cache
cpu7: smt 1, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (PEG_)
acpiprt2 at acpi0: bus 2 (EXP1)
acpiprt3 at acpi0: bus 3 (EXP2)
acpiprt4 at acpi0: bus 4 (EXP3)
acpiprt5 at acpi0: bus 6 (EXP5)
acpicpu0 at acpi0: C1, PSS
acpicpu1 at acpi0: C1, PSS
acpicpu2 at acpi0: C1, PSS
acpicpu3 at acpi0: C1, PSS
acpicpu4 at acpi0: C1, PSS
acpicpu5 at acpi0: C1, PSS
acpicpu6 at acpi0: C1, PSS
acpicpu7 at acpi0: C1, PSS
acpipwrres0 at acpi0: PUBS, resource for XHCI, EHC1, EHC2
acpipwrres1 at acpi0: NVP3, resource for PEG_
acpipwrres2 at acpi0: NVP2, resource for PEG_
acpitz0 at acpi0: critical temperature is 200 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
acpibat0 at acpi0: BAT0 model "45N1153" serial 4787 type LION oem "LGC"
acpiac0 at acpi0: AC unit offline
acpithinkpad0 at acpi0
cpu0: Enhanced SpeedStep 798 MHz: speeds: 3301, 3300, 3100, 2900, 2800,
2600, 2400, 2100, 2000, 1900,
1700, 1500, 1300, 1200, 1000, 800 MHz
pci0 at mainbus0 bus 0
0:28:4: bridge mem address conflict 0xb8000000/0x16100000
0:28:4: bridge mem address conflict 0xd0000000/0x22000000
pchb0 at pci0 dev 0 function 0 "Intel Core 4G Host" rev 0x06
ppb0 at pci0 dev 1 function 0 "Intel Core 4G PCIE" rev 0x06: msi
pci1 at ppb0 bus 1
1:0:0: mem address conflict 0xfff80000/0x80000
vendor "NVIDIA", unknown product 0x0ff6 (class display subclass VGA, rev
0xa1) at pci1 dev 0 function
0 not configured
vga1 at pci0 dev 2 function 0 "Intel HD Graphics 4600" rev 0x06
intagp at vga1 not configured
inteldrm0 at vga1
drm0 at inteldrm0
error: [drm:pid0:i915_write32] *ERROR* Unknown unclaimed register before
writing to 100000
error: [drm:pid0:intel_dp_set_link_train] *ERROR* Timed out waiting for
DP idle patterns
inteldrm0: 2880x1620
wsdisplay0 at vga1 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
azalia0 at pci0 dev 3 function 0 "Intel Core 4G HD Audio" rev 0x06: msi
azalia0: No codecs found
xhci0 at pci0 dev 20 function 0 "Intel 8 Series xHCI" rev 0x04: msi
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 "Intel xHCI root hub" rev 3.00/1.00 addr 1
"Intel 8 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
puc0 at pci0 dev 22 function 3 "Intel 8 Series KT" rev 0x04: ports: 1 com
com4 at puc0 port 0 apic 2 int 17: ns16550a, 16 byte fifo
com4: probed fifo depth: 0 bytes
em0 at pci0 dev 25 function 0 "Intel I217-LM" rev 0x04: msi, address
54:ee:75:51:2a:2c
ehci0 at pci0 dev 26 function 0 "Intel 8 Series USB" rev 0x04: apic 2 int 16
usb1 at ehci0: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia1 at pci0 dev 27 function 0 "Intel 8 Series HD Audio" rev 0x04: msi
azalia1: codecs: Realtek ALC292
audio0 at azalia1
ppb1 at pci0 dev 28 function 0 "Intel 8 Series PCIE" rev 0xd4: msi
pci2 at ppb1 bus 2
sdhc0 at pci2 dev 0 function 0 vendor "O2 Micro", unknown product 0x8520
rev 0x01: apic 2 int 16
sdmmc0 at sdhc0
ppb2 at pci0 dev 28 function 1 "Intel 8 Series PCIE" rev 0xd4: msi
pci3 at ppb2 bus 3
iwm0 at pci3 dev 0 function 0 "Intel Dual Band Wireless AC 7260" rev
0xbb, msi
ppb3 at pci0 dev 28 function 2 "Intel 8 Series PCIE" rev 0xd4: msi
pci4 at ppb3 bus 4
ppb4 at pci0 dev 28 function 4 "Intel 8 Series PCIE" rev 0xd4: msi
pci5 at ppb4 bus 6
ehci1 at pci0 dev 29 function 0 "Intel 8 Series USB" rev 0x04: apic 2 int 23
usb2 at ehci1: USB revision 2.0
uhub2 at usb2 "Intel EHCI root hub" rev 2.00/1.00 addr 1
pcib0 at pci0 dev 31 function 0 "Intel QM87 LPC" rev 0x04
ahci0 at pci0 dev 31 function 2 "Intel 8 Series AHCI" rev 0x04: msi,
AHCI 1.3
ahci0: port 0: 6.0Gb/s
ahci0: port 5: 6.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, Samsung SSD 840, EXT0> SCSI3
0/direct fixed naa.50025388a0631b0d
sd0: 953869MB, 512 bytes/sector, 1953525168 sectors, thin
sd1 at scsibus1 targ 5 lun 0: <ATA, ST2000LM003 HN-M, 2BC1> SCSI3
0/direct fixed naa.50004cf20d658f34
sd1: 1907729MB, 512 bytes/sector, 3907029168 sectors
ichiic0 at pci0 dev 31 function 3 "Intel 8 Series SMBus" rev 0x04: apic
2 int 18
iic0 at ichiic0
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
wsmouse1 at pms0 mux 0
pms0: Synaptics clickpad, firmware 8.1
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
ugen0 at uhub0 port 5 "Generic EMV Smartcard Reader" rev 2.01/1.20 addr 2
ugen1 at uhub0 port 11 "Intel product 0x07dc" rev 2.00/0.01 addr 3
uvideo0 at uhub0 port 12 configuration 1 interface 0
"8SSC20F26960L1GZ52304E9 Integrated Camera" rev 2
.00/10.04 addr 4
video0 at uvideo0
uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.04 addr 2
sdmmc0: can't enable card
uhub4 at uhub2 port 1 "Intel Rate Matching Hub" rev 2.00/0.04 addr 2
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (8f8295db9179eb37.a) swap on sd0b dump on sd0b
iwm0: hw rev 0x140, fw ver 25.228 (API ver 9), address cc:3d:82:6f:ac:48
