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Date: Sat, 08 Jun 2013 22:34:44 +0200
From: Martin Steigerwald <Martin@...htvoll.de>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION] fan always on with 3.10-rc2
Am Freitag, 24. Mai 2013, 13:03:18 schrieb Martin Steigerwald:
> Hi!
>
> With 3.10-rc2 I see fan always or almost always on, even during extended
> periods of basically idling around. I did not notice this with 3.9. This is
> on an ThinkPad T520 with Intel Sandybridge i5-2520M dual core with
> hyperthreading at regularily 2,5 GhZ and Intel graphics (no nvidia).
>
> I am using full hz:
>
> martin@...kaba:~/Linux/Kernel/Mainline/Bugs/fan always on with 3.10.2-rc2> xzgrep NO_HZ config-3.10.0-rc2-tp520.xz
> CONFIG_NO_HZ_COMMON=y
> # CONFIG_NO_HZ_IDLE is not set
> CONFIG_NO_HZ_FULL=y
> CONFIG_NO_HZ_FULL_ALL=y
> CONFIG_NO_HZ=y
> CONFIG_RCU_FAST_NO_HZ=y
>
> And P-State driver (which I used in 3.9 already as well).
>
> Kernel config attached as xz. Use xzless or xzcat to display.
>
>
> What puzzles is output of powertop, especially:
Still present in 3.10-rc4.
I disabled P-State driver but then rpm seems to be even worse.
Around 2800 rpm all the time, was about 2650 with Intel P State driver.
Next I will try without CONFIG_NO_HZ_FULL and CONFIG_NO_HZ_FULL_ALL.
According to powertop CPU 0 is never idle
PowerTOP v2.0 Overview Idle stats Frequency stats Device stats Tunables
Package | Core | CPU 0 CPU 1
| | Actual 843 MHz 1148 MHz
Turbo Mode 2,2% | Turbo Mode 2,1% | Turbo Mode 2,1% 0,8%
2,50 GHz 0,9% | 2,50 GHz 0,9% | 2,50 GHz 0,9% 0,0%
2,00 GHz 0,0% | 2,00 GHz 0,0% | 2,00 GHz 0,0% 0,0%
1,80 GHz 0,1% | 1,80 GHz 0,1% | 1,80 GHz 0,1% 0,0%
1,60 GHz 0,0% | 1,60 GHz 0,0% | 1,60 GHz 0,0% 0,0%
1400 MHz 0,0% | 1400 MHz 0,0% | 1400 MHz 0,0% 0,0%
1200 MHz 0,0% | 1200 MHz 0,0% | 1200 MHz 0,0% 0,0%
1000 MHz 0,0% | 1000 MHz 0,0% | 1000 MHz 0,0% 0,0%
800 MHz 87,9% | 800 MHz 87,3% | 800 MHz 87,1% 3,5%
Idle 9,0% | Idle 9,6% | Idle 9,9% 95,7%
| Core | CPU 2 CPU 3
| | Actual 953 MHz 905 MHz
| Turbo Mode 0,8% | Turbo Mode 0,7% 0,1%
| 2,50 GHz 0,7% | 2,50 GHz 0,7% 0,0%
| 2,00 GHz 0,0% | 2,00 GHz 0,0% 0,0%
| 1,80 GHz 0,1% | 1,80 GHz 0,1% 0,0%
| 1,60 GHz 0,0% | 1,60 GHz 0,0% 0,0%
| 1400 MHz 0,0% | 1400 MHz 0,0% 0,0%
| 1200 MHz 0,0% | 1200 MHz 0,0% 0,0%
| 1000 MHz 0,0% | 1000 MHz 0,0% 0,0%
| 800 MHz 10,3% | 800 MHz 7,4% 3,7%
| Idle 88,1% | Idle 91,0% 96,2%
PowerTOP v2.0 Overview Idle stats Frequency stats Device stats Tunables
Package | Core | CPU 0 CPU 1
| | C0 active 32,5% 0,3%
| | POLL 96,4% 0,9 ms 0,0% 0,0 ms
| | C1E-SNB 0,0% 0,0 ms 0,0% 0,2 ms
C2 (pc2) 0,0% | |
C3 (pc3) 0,0% | C3 (cc3) 0,0% | C3-SNB 0,0% 0,0 ms 0,0% 0,1 ms
C6 (pc6) 0,0% | C6 (cc6) 0,0% | C6-SNB 0,0% 0,0 ms 0,0% 0,0 ms
C7 (pc7) 0,0% | C7 (cc7) 0,0% | C7-SNB 0,0% 0,0 ms 99,2% 10,9 ms
| Core | CPU 2 CPU 3
| | C0 active 1,2% 0,7%
| | POLL 0,0% 0,0 ms 0,0% 0,0 ms
| | C1E-SNB 0,0% 0,1 ms 0,1% 0,2 ms
| |
| C3 (cc3) 0,1% | C3-SNB 0,0% 0,8 ms 0,0% 0,2 ms
| C6 (cc6) 0,0% | C6-SNB 0,0% 0,0 ms 0,0% 0,0 ms
| C7 (cc7) 95,0% | C7-SNB 97,7% 14,5 ms 97,7% 12,2 ms
Old outputs with rc2 and P-State driver for comparison:
>
> PowerTOP v2.0 Overview Idle stats Frequency stats Device stats Tunables
>
>
> Package | Core | CPU 0 CPU 1
> | | C0 active 127,4% 2,3%
> ^^^^^^
> | | POLL 98,1% 0,9 ms 0,0% 0,0 ms
> ^^^^^
> | | C1E-SNB 0,0% 0,0 ms 0,4% 0,9 ms
> C2 (pc2) 0,0% | |
> C3 (pc3) 0,0% | C3 (cc3) 0,0% | C3-SNB 0,0% 0,0 ms 0,1% 0,8 ms
> C6 (pc6) 0,0% | C6 (cc6) 0,0% | C6-SNB 0,0% 0,0 ms 0,0% 0,8 ms
> C7 (pc7) 0,0% | C7 (cc7) 0,0% | C7-SNB 0,0% 0,0 ms 97,5% 7,4 ms
>
> | Core | CPU 2 CPU 3
> | | C0 active 1,9% 0,8%
> | | POLL 0,0% 0,0 ms 0,0% 0,0 ms
> | | C1E-SNB 1,1% 1,3 ms 0,0% 0,1 ms
> | |
> | C3 (cc3) 0,3% | C3-SNB 0,3% 1,0 ms 0,0% 0,2 ms
> | C6 (cc6) 0,1% | C6-SNB 0,1% 2,5 ms 0,0% 0,3 ms
> | C7 (cc7) 96,2% | C7-SNB 97,0% 7,2 ms 99,3% 17,2 ms
>
>
> PowerTOP v2.0 Overview Idle stats Frequency stats Device stats Tunables
>
>
> Package | Core | CPU 0 CPU 1
> | | Actual 3,2 GHz 3,1 GHz
> Idle 100,0% | Idle 100,0% | Idle 100,0% 100,0%
>
> | Core | CPU 2 CPU 3
> | | Actual 3,0 GHz 3,0 GHz
> | Idle 100,0% | Idle 100,0% 100,0%
>
>
> It seems the kernel is overbusying one core completely, if the output of
> powertop is correct. And why is Actual frequencing of CPUs that high?
> I saw that kernel tends to overtact quickly. I thought this was due to
> getting work done quickly and then let it idle. But the idle stats
> seem bogus to, maybe powertop is not up to date with current kernels?
>
> I see no reason for busying one core. This happens when CPU usage is
> below 20%. The fan is consistently around 2640 rpm:
>
>
> PowerTOP v2.0 Overview Idle stats Frequency stats Device stats Tunables
>
> Summary: 399,8 wakeups/second, 0,0 GPU ops/second, 0,0 VFS ops/sec and 3,0% CPU use
>
> Usage Events/s Category Description
> 2644 rpm Device Laptop fan
> 100,0% Device Audio codec hwC0D1: Conexant
> 100,0% Device Audio codec hwC0D3: Intel
> 100,0% Device Audio codec hwC0D0: Conexant
> 30,7 µs/s 112,3 Process [ksoftirqd/0]
> 4,2 ms/s 83,5 Process kwin -session 10cec7d36b000136265311700000023930000_1369322581_349094
> 0,8 ms/s 67,3 Process [irq/42-i915@pci]
> 5,5 ms/s 53,6 Process /usr/bin/X :0 vt7 -br -nolisten tcp -auth /var/run/xauth/A:0-eXsirc
> 698,3 µs/s 13,3 Process [irq/16-mmc0]
> 85,8 µs/s 9,1 Process [rcu_preempt]
> 297,1 µs/s 8,7 Process /usr/sbin/mysqld --defaults-file=/home/martin/.local/share/akonadi/mysql.conf --datadir
> 78,6 µs/s 8,1 Process [ksoftirqd/2]
> 6,7 ms/s 3,7 Process /usr/bin/plasma-desktop
> 218,9 µs/s 5,0 Interrupt [1] timer(softirq)
> 2,8 ms/s 2,9 Process /usr/bin/konsole -session 10cec7d36b000135326160200000249810027_1369322580_899575
> 65,9 µs/s 3,6 Process [ksoftirqd/1]
> 69,8 µs/s 3,5 Process [ksoftirqd/3]
> 38,1 µs/s 3,4 Process [rcuop/3]
> 35,3 µs/s 2,4 Process [rcuop/2]
> 6,0 ms/s 0,00 Process atop
> 21,3 µs/s 1,8 Process [irq/43-ahci]
> 33,3 µs/s 1,7 Process [rcuop/0]
> 122,3 µs/s 1,7 Process [btrfs-transacti]
> 66,4 µs/s 1,5 Process /usr/bin/dirmngr --daemon --sh
> 61,2 µs/s 1,0 Process [rcuop/1]
> 29,2 µs/s 1,0 Process /usr/lib/gvfs/gvfs-afc-volume-monitor
> 40,8 µs/s 0,9 Timer process_timeout
> 25,5 µs/s 0,9 Process /usr/bin/python /usr/bin/hp-systray -x
> 32,2 µs/s 0,7 Process /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
> 5,1 µs/s 0,7 Process [irq/44-eth0]
> 612,1 µs/s 0,4 Process ksysguardd
> 137,6 µs/s 0,5 Interrupt [7] sched(softirq)
> 5,6 µs/s 0,5 Timer clocksource_watchdog
> 71,2 µs/s 0,4 kWork disk_events_workfn
> 57,5 µs/s 0,4 Process kdeinit4: kded4 [kdeinit]
> 68,3 µs/s 0,3 Process akonadiserver
> 34,6 µs/s 0,3 Process /usr/bin/virtuoso-t +foreground +configfile /tmp/virtuoso_fB2599.ini +wait
> 14,9 µs/s 0,3 Process /usr/bin/gpg-agent --daemon --sh --write-env-file=/home/martin/.gnupg/gpg-agent-info-me
> 39,4 µs/s 0,30 Process /usr/bin/nepomukservicestub nepomukfileindexer
>
>
> PowerTOP v2.0 Overview Idle stats Frequency stats Device stats Tunables
>
>
> Usage Device name
> 2644 rpm Laptop fan
> 4,3% CPU use
> 100,0% Audio codec hwC0D3: Intel
> 100,0% Audio codec hwC0D0: Conexant
> 100,0% Audio codec hwC0D1: Conexant
> 20,9 pkts/s Network interface: eth0 (e1000e)
> 100,0% USB device: usb-device-8087-0024
> 100,0% USB device: usb-device-8087-0024
> 100,0% Display backlight
> 100,0% Display backlight
> 100,0% USB device: EHCI Host Controller
> 100,0% USB device: Biometric Coprocessor (UPEK)
> 100,0% USB device: Integrated Smart Card Reader (Lenovo)
> 100,0% USB device: EHCI Host Controller
> 0,0 ops/s GPU
> 100,0% USB device: usb-device-17ef-100a
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1
> 100,0% USB device: PS/2+USB Mouse
> 100,0% PCI Device: Intel Corporation QM67 Express Chipset Family LPC Controller
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller
> 100,0% PCI Device: Ricoh Co Ltd MMC/SD Host Controller
> 100,0% PCI Device: Silicon Image, Inc. SiI 3531 [SATALink/SATARaid] Serial ATA Controller
> 100,0% PCI Device: Ricoh Co Ltd R5C832 PCIe IEEE 1394 Controller
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2
> 100,0% PCI Device: Intel Corporation 82579LM Gigabit Network Connection
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1
> 100,0% PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1
> 100,0% PCI Device: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller
> 100,0% PCI Device: Intel Corporation 2nd Generation Core Processor Family DRAM Controller
> 100,0% PCI Device: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak]
> 0,0 pkts/s Network interface: wlan0 (iwlwifi)
> 0,0% Thinkpad light
> 0,0% Radio device: thinkpad_acpi
> 0,0% Radio device: iwlwifi
>
>
> I saw nothing outstanding in dmesg or kern.log, just
>
> merkaba:~#2> grep "Intel pstate controlling: cpu" /var/log/kern.log
> May 20 10:03:31 merkaba kernel: [264852.930994] Intel pstate controlling: cpu 1
> May 20 10:03:31 merkaba kernel: [264852.944479] Intel pstate controlling: cpu 2
> May 20 10:03:31 merkaba kernel: [264852.957879] Intel pstate controlling: cpu 3
> May 21 09:14:03 merkaba kernel: [315800.710623] Intel pstate controlling: cpu 1
> May 21 09:14:03 merkaba kernel: [315800.724087] Intel pstate controlling: cpu 2
> May 21 09:14:03 merkaba kernel: [315800.737493] Intel pstate controlling: cpu 3
> May 21 20:01:20 merkaba kernel: [344305.122543] Intel pstate controlling: cpu 1
> May 21 20:01:20 merkaba kernel: [344305.135953] Intel pstate controlling: cpu 2
> May 21 20:01:20 merkaba kernel: [344305.149398] Intel pstate controlling: cpu 3
> May 21 21:52:18 merkaba kernel: [ 1.441043] Intel pstate controlling: cpu 0
> May 21 21:52:18 merkaba kernel: [ 1.441084] Intel pstate controlling: cpu 1
> May 21 21:52:18 merkaba kernel: [ 1.441123] Intel pstate controlling: cpu 2
> May 21 21:52:18 merkaba kernel: [ 1.441162] Intel pstate controlling: cpu 3
> May 23 17:22:29 merkaba kernel: [ 1.860224] Intel pstate controlling: cpu 0
> May 23 17:22:29 merkaba kernel: [ 1.860267] Intel pstate controlling: cpu 1
> May 23 17:22:29 merkaba kernel: [ 1.860306] Intel pstate controlling: cpu 2
> May 23 17:22:29 merkaba kernel: [ 1.860345] Intel pstate controlling: cpu 3
>
> But these seem to be regular and I had them before as well.
>
> Thanks,
>
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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