Re: [intel-pstate driver regression] processor frequency very high even if in idle

[JÃrg Otte]

2016-03-30 17:33 GMT+02:00 Pandruvada, Srinivas <srinivas.pandruvada@xxxxxxxxx>:
> On Wed, 2016-03-30 at 13:05 +0200, Rafael J. Wysocki wrote:
>> On Wed, Mar 30, 2016 at 12:17 PM, JÃrg Otte <jrg.otte@xxxxxxxxx>
>> wrote:
>> >
>> > 2016-03-29 23:34 GMT+02:00 Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>:
>> > >
>> > > On Tuesday, March 29, 2016 07:32:27 PM JÃrg Otte wrote:
>> > > >
>> > > > 2016-03-29 19:24 GMT+02:00 JÃrg Otte <jrg.otte@xxxxxxxxx>:
>> > > > >
>> > > > > in v4.5 and earlier intel-pstate downscaled idle processors
>> > > > > (load
>> > > > > 0.1-0.2%) to minumum frequency, in my case 800MHz.
>> > > > >
>> > > > > Now in v4.6-rc1 the characteristic has dramatically changed.
>> > > > > If in
>> > > > > idle the processor frequency is more or less a few MHz around
>> > > > > 2500Mhz.
>> > > > > This is the maximum non turbo frequency.
>> > > > >
>> > > > > No difference between powersafe or performance governor.
>> > > > >
>> > > > > I currently use acpi_cpufreq which works as usual.
>> > > > >
>> > > > > Processor:
>> > > > > Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz (family: 0x6, model:
>> > > > > 0x3c,
>> > > > > stepping: 0x3)
>> > > > >
>> > > > > Last known good kernel is: 4.5.0-01127-g9256d5a
>> > > > > First known bad kernel is: 4.5.0-02535-g09fd671
>> > > > >
>> > > > > There is
>> > > > > commit 277edba Merge tag 'pm+acpi-4.6-rc1-1' of
>> > > > > git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
>> > > > > in between, which brought a few changes in intel_pstate.
>> > > Can you please check commit a4675fbc4a7a (cpufreq: intel_pstate:
>> > > Replace timers
>> > > with utilization update callbacks)?
>> > >
>> > Yes , this solved the problem for me.
>> > I had to resolve some conflicts myself when reverting that
>> > commit. Hard work :).
>> Thanks for doing this.  Can you please post the revert patch you have
>> used?
>>
>> >
>> > Here is a 10-seconds trace of the used frequencies when
>> > in "desktop-idle":
>> >
>> > driver          cpu0 cpu1 cpu2 cpu3
>> > -------------------------------------
>> > intel_pstate (  800  928  941 1200) MHz   load:( 0.2)%
>> > intel_pstate (  800  928 1181 1800) MHz   load:( 0.0)%
>> > intel_pstate ( 1675 1576 1347  800) MHz   load:( 0.0)%
>> > intel_pstate ( 1198 1576  842  800) MHz   load:( 0.5)%
>> > intel_pstate (  800 1181 1113 1600) MHz   load:( 0.0)%
>> > intel_pstate (  808 1181  805  800) MHz   load:( 0.5)%
>> > intel_pstate (  844 1191  900 1082) MHz   load:( 0.3)%
>> > intel_pstate (  816 1191  800  800) MHz   load:( 0.0)%
>> > intel_pstate (  800  905  892 1082) MHz   load:( 0.2)%
>> > intel_pstate (  945  905 1340  800) MHz   load:( 0.3)%
>> Please also run turbostat with and without your revert patch applied.
> I want to reproduce this if I can. Can you give us info about your
> setup (Linux distribution, laptop model etc.)?
>
> Thanks,
> Srinivas

Distro: Ubuntu 14.04.4 LTS
Laptop: FUJITSU LIFEBOOK A544

lspci:
=======
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core
Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core
Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core
Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core
Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset
Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220
Series Chipset Family MEI Controller #1 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset
High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset
Family PCI Express Root Port #1 (rev d4)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset
Family PCI Express Root Port #3 (rev d4)
00:1c.5 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset
Family PCI Express Root Port #6 (rev d4)
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series
Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family
SMBus Controller (rev 04)
00:1f.6 Signal processing controller: Intel Corporation 8 Series
Chipset Family Thermal Management Controller (rev 04)
03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)

lshw:
========
    description: Notebook
    product: LIFEBOOK A544 ()
    vendor: FUJITSU
    serial: YLUA094704
    width: 64 bits
    capabilities: smbios-2.7 dmi-2.7
    configuration: administrator_password=disabled boot=normal
chassis=notebook frontpanel_password=disabled
keyboard_password=disabled power-on_password=disabled
uuid=F4FC89BC-8701-1230-8B14-E01877C1801D
  *-core
       description: Motherboard
       product: FJNBB35
       vendor: FUJITSU
       physical id: 0
       serial: 651583-01R4712766
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          vendor: Intel Corp.
          physical id: 0
          bus info: cpu@0
          version: Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz
          serial: To Be Filled By O.E.M.
          slot: On Board
          size: 2500MHz
          capacity: 2500MHz
          width: 64 bits
          clock: 100MHz
          capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr
pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc
arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf
eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg
fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer
aes xsave avx f16c rdrand lahf_lm abm epb tpr_shadow vnmi flexpriority
ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt
dtherm ida arat pln pts cpufreq
          configuration: cores=2 enabledcores=2 threads=4
        *-cache:0
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             slot: L1-Cache
             size: 32KiB
             capacity: 32KiB
             capabilities: asynchronous internal write-back instruction
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             physical id: 3
             slot: L2-Cache
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             capabilities: asynchronous internal write-back unified
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             serial: 57641925
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             size: 8GiB
             width: 64 bits
             clock: 1600MHz (0.6ns)
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             slot: ChannelB-DIMM1
     *-firmware
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          vendor: FUJITSU // Phoenix Technologies Ltd.
          physical id: 25
          version: Version 1.17
          date: 05/09/2014
          size: 128KiB
          capacity: 4032KiB
          capabilities: pci pcmcia pnp upgrade shadowing cdboot
bootselect acpi usb biosbootspecification netboot
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          description: Host bridge
          product: Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 06
          width: 32 bits
          clock: 33MHz
        *-pci:0
             description: PCI bridge
             product: Xeon E3-1200 v3/4th Gen Core Processor PCI
Express x16 Controller
             vendor: Intel Corporation
             physical id: 1
             bus info: pci@0000:00:01.0
             version: 06
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm msi pciexpress normal_decode
bus_master cap_list
             configuration: driver=pcieport
             resources: irq:16
        *-display
             description: VGA compatible controller
             product: 4th Gen Core Processor Integrated Graphics Controller
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 06
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:24 memory:f0000000-f03fffff
memory:e0000000-efffffff ioport:4000(size=64) memory:c0000-dffff
        *-multimedia:0 UNCLAIMED
             description: Audio device
             product: Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
             vendor: Intel Corporation
             physical id: 3
             bus info: pci@0000:00:03.0
             version: 06
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi pciexpress bus_master cap_list
             configuration: latency=0
             resources: memory:f0710000-f0713fff
        *-usb
             description: USB controller
             product: 8 Series/C220 Series Chipset Family USB xHCI
             vendor: Intel Corporation
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi xhci bus_master cap_list
             configuration: driver=xhci_hcd latency=0
             resources: irq:28 memory:f0700000-f070ffff
        *-communication UNCLAIMED
             description: Communication controller
             product: 8 Series/C220 Series Chipset Family MEI Controller #1
             vendor: Intel Corporation
             physical id: 16
             bus info: pci@0000:00:16.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: latency=0
             resources: memory:f0719000-f071900f
        *-multimedia:1 UNCLAIMED
             description: Audio device
             product: 8 Series/C220 Series Chipset High Definition
Audio Controller
             vendor: Intel Corporation
             physical id: 1b
             bus info: pci@0000:00:1b.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi pciexpress bus_master cap_list
             configuration: latency=0
             resources: memory:f0714000-f0717fff
        *-pci:1
             description: PCI bridge
             product: 8 Series/C220 Series Chipset Family PCI Express
Root Port #1
             vendor: Intel Corporation
             physical id: 1c
             bus info: pci@0000:00:1c.0
             version: d4
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode
bus_master cap_list
             configuration: driver=pcieport
             resources: irq:16
        *-pci:2
             description: PCI bridge
             product: 8 Series/C220 Series Chipset Family PCI Express
Root Port #3
             vendor: Intel Corporation
             physical id: 1c.2
             bus info: pci@0000:00:1c.2
             version: d4
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode
bus_master cap_list
             configuration: driver=pcieport
             resources: irq:18 memory:f0600000-f06fffff
           *-network DISABLED
                description: Ethernet interface
                product: Wireless 7260
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:03:00.0
                logical name: wlan0
                version: 73
                serial: 80:19:34:4d:31:40
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
ethernet physical
                configuration: broadcast=yes driver=iwlwifi
driverversion=4.5.0-reva4675fbc4a7a-02536-g77 firmware=16.242414.0
latency=0 link=no multicast=yes
                resources: irq:27 memory:f0600000-f0601fff
        *-pci:3
             description: PCI bridge
             product: 8 Series/C220 Series Chipset Family PCI Express
Root Port #6
             vendor: Intel Corporation
             physical id: 1c.5
             bus info: pci@0000:00:1c.5
             version: d4
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode
bus_master cap_list
             configuration: driver=pcieport
             resources: irq:17 ioport:3000(size=4096)
memory:f0500000-f05fffff ioport:f0400000(size=1048576)
           *-network
                description: Ethernet interface
                product: RTL8111/8168/8411 PCI Express Gigabit
Ethernet Controller
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0
                bus info: pci@0000:04:00.0
                logical name: eth0
                version: 07
                serial: e0:18:77:c1:80:1d
                size: 1Gbit/s
                capacity: 1Gbit/s
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress msix vpd bus_master
cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt
1000bt-fd autonegotiation
                configuration: autonegotiation=on broadcast=yes
driver=r8169 driverversion=2.3LK-NAPI duplex=full
firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.0.18 latency=0 link=yes
multicast=yes port=MII speed=1Gbit/s
                resources: irq:26 ioport:3000(size=256)
memory:f0500000-f0500fff memory:f0400000-f0403fff
        *-isa
             description: ISA bridge
             product: HM86 Express LPC Controller
             vendor: Intel Corporation
             physical id: 1f
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             version: 04
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             clock: 33MHz
             capabilities: isa bus_master cap_list
             configuration: latency=0
        *-storage
             description: SATA controller
             product: 8 Series/C220 Series Chipset Family 6-port SATA
Controller 1 [AHCI mode]
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@0000:00:1f.2
             version: 04
             width: 32 bits
             clock: 66MHz
             capabilities: storage msi pm ahci_1.0 bus_master cap_list
             configuration: driver=ahci latency=0
             resources: irq:25 ioport:4088(size=8) ioport:4094(size=4)
ioport:4080(size=8) ioport:4090(size=4) ioport:4060(size=32)
memory:f071c000-f071c7ff
        *-serial UNCLAIMED
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             product: 8 Series/C220 Series Chipset Family SMBus Controller
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             version: 04
             width: 64 bits
             clock: 33MHz
             configuration: latency=0
             resources: memory:f0718000-f07180ff ioport:efa0(size=32)
        *-generic UNCLAIMED
             description: Signal processing controller
             product: 8 Series Chipset Family Thermal Management Controller
             vendor: Intel Corporation
             physical id: 1f.6
             bus info: pci@0000:00:1f.6
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: latency=0
             resources: memory:f071b000-f071bfff
     *-scsi:0
          physical id: 2
          bus info: usb@2:1
          logical name: scsi6
          capabilities: emulated scsi-host
          configuration: driver=usb-storage
        *-disk
             description: SCSI Disk
             product: ASM1153E
             vendor: asmedia
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             bus info: scsi@6:0.0.0
             logical name: /dev/sda
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             serial: 2109876543210
             size: 698GiB (750GB)
             capabilities: partitioned partitioned:dos
             configuration: ansiversion=6 sectorsize=4096 signature=000a8c30
           *-volume
                description: EXT4 volume
                vendor: Linux
                physical id: 1
                bus info: scsi@6:0.0.0,1
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                logical name: /media/jojo/deftoshiba
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                size: 698GiB
                capacity: 698GiB
                capabilities: primary journaled extended_attributes
large_files huge_files dir_nlink recover extents ext4 ext2 initialized
                configuration: created=2016-03-07 17:41:49
filesystem=ext4 label=deftoshiba lastmountpoint=/media/jojo/deftoshiba
modified=2016-03-30 17:05:24 mount.fstype=ext4
mount.options=rw,nosuid,nodev,relatime,data=ordered mounted=2016-03-30
17:05:24 state=mounted
     *-scsi:1
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guid=a08a4503-fae4-4a5b-b677-5c66cbbff634 sectorsize=4096
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mount.options=rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
state=mounted
           *-volume:1
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                configuration: created=2015-10-22 11:13:27
filesystem=ext4 lastmountpoint=/ modified=2016-03-30 17:04:26
mount.fstype=ext4
mount.options=rw,relatime,errors=remount-ro,data=ordered
mounted=2016-03-30 17:04:26 state=mounted
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  *-battery
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       version: 2014/ 7/14
       serial: 01A-Z140714001338Z
       slot: Internal Battery
       capacity: 48600mWh
       configuration: voltage=10,8V