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Date: Wed, 30 Mar 2016 17:51:52 +0200
From: Jörg Otte <jrg.otte@...il.com>
To: "Pandruvada, Srinivas" <srinivas.pandruvada@...el.com>
Cc: "rafael@...nel.org" <rafael@...nel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
"rjw@...ysocki.net" <rjw@...ysocki.net>
Subject: Re: [intel-pstate driver regression] processor frequency very high
even if in idle
2016-03-30 17:33 GMT+02:00 Pandruvada, Srinivas <srinivas.pandruvada@...el.com>:
> On Wed, 2016-03-30 at 13:05 +0200, Rafael J. Wysocki wrote:
>> On Wed, Mar 30, 2016 at 12:17 PM, Jörg Otte <jrg.otte@...il.com>
>> wrote:
>> >
>> > 2016-03-29 23:34 GMT+02:00 Rafael J. Wysocki <rjw@...ysocki.net>:
>> > >
>> > > On Tuesday, March 29, 2016 07:32:27 PM Jörg Otte wrote:
>> > > >
>> > > > 2016-03-29 19:24 GMT+02:00 Jörg Otte <jrg.otte@...il.com>:
>> > > > >
>> > > > > 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
*-cpu
description: CPU
product: Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz
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
description: L1 cache
physical id: 2
slot: L1-Cache
size: 32KiB
capacity: 32KiB
capabilities: asynchronous internal write-back instruction
*-cache:1
description: L2 cache
physical id: 3
slot: L2-Cache
size: 256KiB
capacity: 256KiB
capabilities: asynchronous internal write-back unified
*-cache:2
description: L3 cache
physical id: 4
slot: L3-Cache
size: 3MiB
capacity: 3MiB
capabilities: asynchronous internal write-back unified
*-cache
description: L1 cache
physical id: 1
slot: L1-Cache
size: 32KiB
capacity: 32KiB
capabilities: asynchronous internal write-back data
*-memory
description: System Memory
physical id: 5
slot: System board or motherboard
size: 8GiB
*-bank:0
description: SODIMM DDR3 Synchronous 1600 MHz (0,6 ns)
product: M471B1G73DB0-YK0
vendor: Samsung
physical id: 0
serial: 57641925
slot: ChannelA-DIMM0
size: 8GiB
width: 64 bits
clock: 1600MHz (0.6ns)
*-bank:1
description: DIMM [empty]
physical id: 1
slot: ChannelA-DIMM1
*-bank:2
description: DIMM [empty]
physical id: 2
slot: ChannelB-DIMM0
*-bank:3
description: DIMM [empty]
physical id: 3
slot: ChannelB-DIMM1
*-firmware
description: BIOS
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
*-pci
description: Host bridge
product: Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller
vendor: Intel Corporation
physical id: 100
bus info: pci@...0:00:00.0
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@...0:00:01.0
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@...0:00:02.0
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@...0:00:03.0
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@...0:00:14.0
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@...0:00:16.0
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@...0:00:1b.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@...0:00:1c.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@...0:00:1c.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@...0:03:00.0
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@...0:00:1c.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@...0:04:00.0
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
bus info: pci@...0:00:1f.0
version: 04
width: 32 bits
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@...0:00:1f.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
description: SMBus
product: 8 Series/C220 Series Chipset Family SMBus Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@...0:00:1f.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@...0:00:1f.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
physical id: 0.0.0
bus info: scsi@6:0.0.0
logical name: /dev/sda
version: 0
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
logical name: /dev/sda1
logical name: /media/jojo/deftoshiba
version: 1.0
serial: b5dcbf60-26b0-42b5-af73-ce0cb2f8dbcb
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
physical id: 3
logical name: scsi2
capabilities: emulated
*-cdrom
description: DVD-RAM writer
product: CDDVDW SU-208CB
vendor: TSSTcorp
physical id: 0.0.0
bus info: scsi@2:0.0.0
logical name: /dev/cdrom
logical name: /dev/sr0
version: FU01
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=nodisc
*-scsi:2
physical id: 4
logical name: scsi4
capabilities: emulated
*-disk
description: ATA Disk
product: ST500LM000-1EJ16
vendor: Seagate
physical id: 0.0.0
bus info: scsi@4:0.0.0
logical name: /dev/sdb
version: FJ14
serial: W761H3BD
size: 465GiB (500GB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5
guid=a08a4503-fae4-4a5b-b677-5c66cbbff634 sectorsize=4096
*-volume:0
description: Windows FAT volume
vendor: mkfs.fat
physical id: 1
bus info: scsi@4:0.0.0,1
logical name: /dev/sdb1
logical name: /boot/efi
version: FAT32
serial: 8b74-4e15
size: 510MiB
capacity: 511MiB
capabilities: boot fat initialized
configuration: FATs=2 filesystem=fat mount.fstype=vfat
mount.options=rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
state=mounted
*-volume:1
description: EXT4 volume
vendor: Linux
physical id: 2
bus info: scsi@4:0.0.0,2
logical name: /dev/sdb2
logical name: /
version: 1.0
serial: 17ed5f3c-77aa-4dbe-992b-88c943eb9c4e
size: 457GiB
capabilities: journaled extended_attributes
large_files huge_files dir_nlink recover extents ext4 ext2 initialized
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
*-volume:2
description: Linux swap volume
vendor: Linux
physical id: 3
bus info: scsi@4:0.0.0,3
logical name: /dev/sdb3
version: 1
serial: 8c1aad5c-b153-46db-884b-d0d38ba2f9ee
size: 8097MiB
capacity: 8098MiB
capabilities: nofs swap initialized
configuration: filesystem=swap pagesize=4095
*-battery
description: Lithium Ion Battery
product: CP671396-01
vendor: FUJITSU
physical id: 1
version: 2014/ 7/14
serial: 01A-Z140714001338Z
slot: Internal Battery
capacity: 48600mWh
configuration: voltage=10,8V
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