On 9 February 2011 21:05, Arjan van de Ven <[email protected]> wrote:
> reports the btrfs background workers,
> not the guys who cause those to be busy.
> (the "D" ones in the screenshot)
>
> can you run "powertop -d" to see if other "D"'s show up?
I ran vmstat, top, sar and took a dump of /proc/stat. None of them
show high percentages in iowait state. All of them show around 97% cpu
idle time. Is powertop erroneously showing high polling then?
Also, my disk light stays off so I dont think high IO is taking place
on the disk atleast. It might be some other device?
Find the logs attached.
>
>
--
Peace, Love, Linux
Debayan Banerjee
PowerTOP 1.12 (C) 2007, 2008 Intel Corporation
Collecting data for 15 seconds
Your CPU supports the following C-states : C1 C2 C4
Your BIOS reports the following C-states : C1 C2 C4
Cn Avg residency
C0 (cpu running) ( 0.5%)
polling 14.3ms (99.5%)
C1 mwait 0.0ms ( 0.0%)
C2 mwait 0.0ms ( 0.0%)
C4 mwait 0.0ms ( 0.0%)
P-states (frequencies)
1.60 Ghz 0.1%
1333 Mhz 0.0%
1067 Mhz 0.0%
800 Mhz 99.9%
Disk accesses:
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
The application 'btrfs-transacti' is writing to file '?' on /dev/sda2
Wakeups-from-idle per second : 69.4 interval: 15.0s
no ACPI power usage estimate available
Top causes for wakeups:
0.0% ( 0.0)D btrfs-transacti
71.6% ( 24.9) [ath] <interrupt>
14.2% ( 4.9) syndaemon
10.7% ( 3.7) [ata_piix, uhci_hcd:usb3] <interrupt>
1.2% ( 0.4) phy0
0.6% ( 0.2) init
0.4% ( 0.1) avahi-daemon
0.2% ( 0.1) PS/2 keyboard/mouse/touchpad interrupt
0.2% ( 0.1) [kernel core] bdi_arm_supers_timer (sync_supers_timer_fn)
0.2% ( 0.1) [kernel core] start_rt_bandwidth.clone.1
(sched_rt_period_timer)
0.2% ( 0.1) btrfs-endio-met
0.2% ( 0.1) gconfd-2
0.2% ( 0.1) wpa_supplicant
0.2% ( 0.1) gnome-settings-
Suggestion: Enable wireless power saving mode by executing the following
command:
iwconfig wlan0 power timeout 500ms
This will sacrifice network performance slightly to save power.
Recent USB suspend statistics
Active Device name
0.0% USB device 1-6 : USB2.0 XGA WebCam (JMICRON TECHNOLOGIES CO., LTD.)
0.0% USB device usb5 : UHCI Host Controller (Linux 2.6.35.3-13.5-netbook
uhci_hcd)
0.0% USB device usb4 : UHCI Host Controller (Linux 2.6.35.3-13.5-netbook
uhci_hcd)
0.0% USB device usb3 : UHCI Host Controller (Linux 2.6.35.3-13.5-netbook
uhci_hcd)
0.0% USB device usb2 : UHCI Host Controller (Linux 2.6.35.3-13.5-netbook
uhci_hcd)
0.0% USB device usb1 : EHCI Host Controller (Linux 2.6.35.3-13.5-netbook
ehci_hcd)
Recent audio activity statistics
Active Device name
0.0% hwC0D2 Realtek ALC662 rev1
Recent SATA AHCI link activity statistics
Active Partial Slumber Device name
Linux 2.6.35.3-13.5-netbook (ws217.ltsp) 02/16/11 _i686_ (2 CPU)
08:17:13 CPU %user %nice %system %iowait %steal %idle
08:17:14 all 0.00 0.00 1.00 0.00 0.00 99.00
08:17:15 all 0.00 0.00 2.00 0.00 0.00 98.00
08:17:16 all 0.00 0.00 1.49 0.00 0.00 98.51
08:17:17 all 6.00 0.00 4.50 0.00 0.00 89.50
08:17:18 all 1.50 0.00 5.00 0.00 0.00 93.50
08:17:19 all 1.00 0.50 4.48 0.00 0.00 94.03
08:17:20 all 0.50 0.00 3.98 25.37 0.00 70.15
08:17:21 all 0.00 0.00 1.51 0.00 0.00 98.49
08:17:22 all 0.00 0.00 2.00 0.00 0.00 98.00
08:17:23 all 0.00 0.00 1.99 0.00 0.00 98.01
Average: all 0.90 0.05 2.80 2.55 0.00 93.71
cpu 10081 85 11102 497513 6859 0 1859 0 0 0
cpu0 4744 41 5318 249266 2525 0 1850 0 0 0
cpu1 5337 44 5783 248247 4333 0 8 0 0 0
intr 5411085 149 2602 0 0 0 0 0 0 52 1358 0 0 9829 0 0 0 125 96082 0 12292 0 0
0 39 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0
ctxt 858161
btime 1297821876
processes 3070
procs_running 1
procs_blocked 0
softirq 6637194 1 5275620 40 214 12327 1 94151 1101494 0 153346
[H[J[0;10mtop - 08:17:31 up 42 min, 1 user, load average: 0.11, 0.12,
0.08[0;10m[39;49m[K
Tasks:[0;10m[39;49m[0;10m 98 [0;10m[39;49mtotal,[0;10m[39;49m[0;10m
1 [0;10m[39;49mrunning,[0;10m[39;49m[0;10m 97
[0;10m[39;49msleeping,[0;10m[39;49m[0;10m 0
[0;10m[39;49mstopped,[0;10m[39;49m[0;10m 0
[0;10m[39;49mzombie[0;10m[39;49m[K
Cpu(s):[0;10m[39;49m[0;10m 2.0%[0;10m[39;49mus,[0;10m[39;49m[0;10m
2.2%[0;10m[39;49msy,[0;10m[39;49m[0;10m
0.0%[0;10m[39;49mni,[0;10m[39;49m[0;10m
94.1%[0;10m[39;49mid,[0;10m[39;49m[0;10m
1.4%[0;10m[39;49mwa,[0;10m[39;49m[0;10m
0.0%[0;10m[39;49mhi,[0;10m[39;49m[0;10m
0.4%[0;10m[39;49msi,[0;10m[39;49m[0;10m
0.0%[0;10m[39;49mst[0;10m[39;49m[K
Mem: [0;10m[39;49m[0;10m 1010660k
[0;10m[39;49mtotal,[0;10m[39;49m[0;10m 369880k
[0;10m[39;49mused,[0;10m[39;49m[0;10m 640780k
[0;10m[39;49mfree,[0;10m[39;49m[0;10m 1144k
[0;10m[39;49mbuffers[0;10m[39;49m[K
Swap:[0;10m[39;49m[0;10m 262136k
[0;10m[39;49mtotal,[0;10m[39;49m[0;10m 0k
[0;10m[39;49mused,[0;10m[39;49m[0;10m 262136k
[0;10m[39;49mfree,[0;10m[39;49m[0;10m 306772k
[0;10m[39;49mcached[0;10m[39;49m[K
[6;1H
[7m PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
[0;10m[39;49m[K
[0;10m[0;10m 3021 root 20 0 2528 964 760 R 9.1 0.1 0:00.10 top
[0;10m[39;49m
[0;10m 1 root 20 0 2064 532 472 S 0.0 0.1 0:01.70 init
[0;10m[39;49m
[0;10m 2 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kthreadd
[0;10m[39;49m
[0;10m 3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
[0;10m[39;49m
[0;10m 4 root RT 0 0 0 0 S 0.0 0.0 0:00.02 migration/0
[0;10m[39;49m
[0;10m 5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
[0;10m[39;49m
[0;10m 9 root 20 0 0 0 0 S 0.0 0.0 0:00.93 events/0
[0;10m[39;49m
[0;10m 11 root 20 0 0 0 0 S 0.0 0.0 0:00.01 khelper
[0;10m[39;49m
[0;10m 12 root 20 0 0 0 0 S 0.0 0.0 0:00.00 async/mgr
[0;10m[39;49m
[0;10m 13 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pm
[0;10m[39;49m
[0;10m 14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 sync_supers
[0;10m[39;49m
[0;10m 15 root 20 0 0 0 0 S 0.0 0.0 0:00.00 bdi-default
[0;10m[39;49m
[0;10m 16 root 20 0 0 0 0 S 0.0 0.0 0:00.26 kblockd/0
[0;10m[39;49m
[0;10m 18 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpid
[0;10m[39;49m
[0;10m 19 root 20 0 0 0 0 S 0.0 0.0 0:00.00
kacpi_notify
[0;10m[39;49m
[0;10m 20 root 20 0 0 0 0 S 0.0 0.0 0:00.00
kacpi_hotplug
[0;10m[39;49m
[0;10m 21 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata_aux
[0;10m[39;49m
[0;10m 22 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata_sff/0
[0;10m[39;49m
[0;10m 24 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khubd
[0;10m[39;49m
[0;10m 25 root 20 0 0 0 0 S 0.0 0.0 0:00.43 kseriod
[0;10m[39;49m
[0;10m 26 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kmmcd
[0;10m[39;49m
[0;10m 27 root 20 0 0 0 0 S 0.0 0.0 0:06.30 kondemand/0
[0;10m[39;49m
[0;10m 29 root 20 0 0 0 0 S 0.0 0.0 0:00.01 kswapd0
[0;10m[39;49m
[0;10m 30 root 20 0 0 0 0 S 0.0 0.0 0:00.00 aio/0
[0;10m[39;49m
[0;10m 32 root 20 0 0 0 0 S 0.0 0.0 0:00.00 crypto/0
[0;10m[39;49m
[0;10m 42 root 20 0 0 0 0 S 0.0 0.0 0:00.00 i915
[0;10m[39;49m
[0;10m 43 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kslowd000
[0;10m[39;49m
[0;10m 44 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kslowd001
[0;10m[39;49m
[0;10m 45 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_0
[0;10m[39;49m
[0;10m 46 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_1
[0;10m[39;49m[6;1H[K[38;1H[?25h[?0c
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 0 640908 1144 306768 0 0 41 21 1026 163 2 2 94 1
0
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