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Date: Fri, 24 May 2013 13:03:18 +0200
From: Martin Steigerwald <Martin@...htvoll.de>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [REGRESSION] fan always on with 3.10-rc2
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:
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
Download attachment "config-3.10.0-rc2-tp520.xz" of type "application/x-xz" (25852 bytes)
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