User:Hlangos
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System Load
Comparison
| Device | MSI DigiVOX mini II V3.0 |
Fujitsu-Siemens DVB-T Mobile TV Tuner |
Toshiba USB DVB-T Tuner PX1211E-1TVD |
Sino Video SV3420D-V02 |
|---|---|---|---|---|
| Picture | todo | |||
| driver | af9015 | vp7045 | dib3000mc | ec168 |
| zap w/o pid filter |
27.6 | 5.8 | 5.8 | 2.3 |
| vdr w/o pid filter |
34.3 | 14.8 | 13.4 | 4.4 |
| zap with pid filter |
1.1 | - | 0.5 | 2.4 |
| vdr with pid filter |
14.7 | - | 8.0 | 4.4 |
Detailed powertop measurements
More details:
I ran zap and vdr on a system that is idle. Without zap or vdr the system does about 5 wakups per second and spends about 0.1% of its time in C0 (cpu running).
Polling of the remote is disabled using the module option disable_rc_polling=1 for the dvb_usb module.
The hardware PID filter is enabled with the option force_pid_filter_usage=1 for the dvb_usb module.
vdr is the one from e-tobi.net/vdr-experimental lenny vdr-extensions here's the list of plugins that were enabled during the test: | Searching for plugins (VDR 1.6.0-2/1.6.0) (cache hit): epgsearch quickepgsearch conflictcheckonly live epgsearchonly ffnetdev streamdev-server.
MSI DigiVOX mini II rev.3
Compiled and installed according to the instructions on MSI_DigiVox_mini_II_V3.0.
The device has a hardware PID filter, but the maximum block size for transfers over USB seems to be limited to 512 byte. This causes a lot of protocol overhead.
#####################################################
==================== remote disabled, pid filter disabled
------------------ running zap
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) (27.6%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.0ms ( 0.0%) 188 Mhz 100.0%
C3 0.3ms (72.4%)
Wakeups-from-idle per second : 2721.4 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
63.1% (4686.6) /sys/bus/usb/devices/5-1
36.7% (2724.0) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
0.1% ( 7.1) zap : schedule_timeout (process_timeout)
0.0% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.0% ( 1.6) <kernel module> : ehci_work (ehci_watchdog)
0.0% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.0% ( 1.0) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
0.0% ( 1.0) ifconfig : b44_open (b44_timer)
0.0% ( 1.0) zap : do_nanosleep (hrtimer_wakeup)
0.0% ( 0.5) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
------------------- running vdr
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) (34.4%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.4ms (36.3%) 188 Mhz 100.0%
C3 0.2ms (29.3%)
Wakeups-from-idle per second : 2580.6 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
59.1% (4300.1) /sys/bus/usb/devices/5-1
37.6% (2730.7) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
3.0% (221.1) vdr : futex_wait (hrtimer_wakeup)
0.1% ( 6.1) vdr : schedule_timeout (process_timeout)
0.0% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.0% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.0% ( 1.5) vdr : hrtick_set (hrtick)
0.0% ( 1.0) ifconfig : b44_open (b44_timer)
0.0% ( 1.0) vdr : do_nanosleep (hrtimer_wakeup)
0.0% ( 1.0) tail : do_nanosleep (hrtimer_wakeup)
0.0% ( 0.9) <kernel module> : ehci_work (ehci_watchdog)
#######################################
------------------ remote disabled, pid filter enabled:
------------------ running zap
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 1.1%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.0ms ( 0.0%) 188 Mhz 100.0%
C3 11.4ms (98.9%)
Wakeups-from-idle per second : 89.0 interval: 15.0s
no ACPI power usage estimate available
Top causes for wakeups:
47.5% ( 63.9) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
31.9% ( 43.0) /sys/bus/usb/devices/5-1
8.1% ( 10.9) <kernel module> : ehci_work (ehci_watchdog)
5.6% ( 7.6) zap : schedule_timeout (process_timeout)
1.5% ( 2.0) xfsaild : schedule_timeout (process_timeout)
1.3% ( 1.7) xfsbufd : schedule_timeout (process_timeout)
0.7% ( 1.0) zap : do_nanosleep (hrtimer_wakeup)
0.7% ( 1.0) ifconfig : b44_open (b44_timer)
0.7% ( 1.0) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
0.4% ( 0.5) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
------------------ running vdr
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) (14.7%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.2%) 188 Mhz 100.0%
C3 1.1ms (85.1%)
Wakeups-from-idle per second : 823.2 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
46.2% (784.8) /sys/bus/usb/devices/5-1
39.4% (668.4) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
13.0% (221.3) vdr : futex_wait (hrtimer_wakeup)
0.4% ( 6.9) <kernel module> : ehci_work (ehci_watchdog)
0.4% ( 6.3) vdr : schedule_timeout (process_timeout)
0.1% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.1% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.1% ( 1.0) tail : do_nanosleep (hrtimer_wakeup)
0.1% ( 1.0) ifconfig : b44_open (b44_timer)
0.1% ( 1.0) vdr : do_nanosleep (hrtimer_wakeup)
0.1% ( 0.9) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
0.0% ( 0.5) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
#########################################
Fujitsu-Siemens DVB-T Mobile TV Tuner
It doesn't have a hardware PID filter but uses 4096 byte bulk transfers over USB. Thus has less USB protocol overhead.
--------------------------- without remote, without pid filter
------------------ zap
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 5.7%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.0ms ( 0.0%) 188 Mhz 100.0%
C3 2.0ms (94.3%)
Wakeups-from-idle per second : 473.5 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
55.7% (592.2) USB device 5-1 : DVB-T 2 (Afatech)
42.9% (455.9) <interrupt> : uhci_hcd:usb1, ehci_hcd:usb5, HDA Intel
0.5% ( 5.7) zap : schedule_timeout (process_timeout)
0.2% ( 2.4) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
0.2% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.2% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.1% ( 1.0) zap : do_nanosleep (hrtimer_wakeup)
-------------------- vdr
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) (13.0%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.1%) 188 Mhz 100.0%
C3 1.5ms (86.8%)
Wakeups-from-idle per second : 611.1 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
45.1% (540.5) USB device 5-1 : DVB-T 2 (Afatech)
34.9% (418.2) <interrupt> : uhci_hcd:usb1, ehci_hcd:usb5, HDA Intel
18.4% (220.8) vdr : futex_wait (hrtimer_wakeup)
--------------------------
Toshiba USB DVB-T TV PX1211E-1TVD
This device has a hardware PID filter and uses 4096 Byte bulk transfers.
[329345.857835] dvb-usb: found a 'LITE-ON USB2.0 DVB-T Tuner' in warm state.
[329345.859820] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
[329345.862374] DVB: registering new adapter (LITE-ON USB2.0 DVB-T Tuner)
[329345.875554] DVB: registering adapter 0 frontend 0 (DiBcom 3000MC/P)...
[329345.898401] MT2060: successfully identified (IF1 = 1220)
[329346.390290] dvb-usb: LITE-ON USB2.0 DVB-T Tuner successfully initialized and connected.
[329346.390729] usbcore: registered new interface driver dvb_usb_dibusb_mc
===================================== without pid filter
============ zap
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 5.8%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.0%) 188 Mhz 100.0%
C3 2.0ms (94.2%)
Wakeups-from-idle per second : 484.0 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
55.9% (611.8) USB device 5-1 : DVB-T 2 (Afatech)
42.9% (469.2) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
0.5% ( 5.5) zap : schedule_timeout (process_timeout)
0.2% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.1% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.1% ( 1.0) ifconfig : b44_open (b44_timer)
============ vdr
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) (13.4%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.1%) 188 Mhz 100.0%
C3 1.4ms (86.5%)
Wakeups-from-idle per second : 616.6 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
45.5% (553.8) /sys/bus/usb/devices/5-1
35.0% (425.1) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
18.2% (221.1) vdr : futex_wait (hrtimer_wakeup)
0.5% ( 5.9) vdr : schedule_timeout (process_timeout)
0.2% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.1% ( 1.8) xfsbufd : schedule_timeout (process_timeout)
0.1% ( 1.0) ifconfig : b44_open (b44_timer)
0.1% ( 1.0) tail : do_nanosleep (hrtimer_wakeup)
0.1% ( 1.0) vdr : do_nanosleep (hrtimer_wakeup)
0.0% ( 0.5) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
0.0% ( 0.5) <kernel core> : schedule_delayed_work_on (delayed_work_timer_fn)
0.0% ( 0.5) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
=================================with pid filter
==================== zap
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 0.5%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.0ms ( 0.0%) 188 Mhz 100.0%
C3 36.1ms (99.5%)
Wakeups-from-idle per second : 27.6 interval: 20.0s
no ACPI power usage estimate available
Top causes for wakeups:
31.2% ( 10.0) syslogd : ehci_irq (ehci_watchdog)
29.0% ( 9.3) zap : schedule_timeout (process_timeout)
8.7% ( 2.8) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
6.2% ( 2.0) xfsaild : schedule_timeout (process_timeout)
5.8% ( 1.9) USB device 5-1 : DVB-T 2 (Afatech)
5.3% ( 1.7) xfsbufd : schedule_timeout (process_timeout)
3.1% ( 1.0) ifconfig : b44_open (b44_timer)
3.1% ( 1.0) zap : do_nanosleep (hrtimer_wakeup)
===================== vdr
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 8.0%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.0%) 188 Mhz 100.0%
C3 3.0ms (91.9%)
Wakeups-from-idle per second : 311.3 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
50.1% (221.4) vdr : futex_wait (hrtimer_wakeup)
24.3% (107.5) /sys/bus/usb/devices/5-1
20.3% ( 89.5) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
1.7% ( 7.3) <kernel module> : ehci_work (ehci_watchdog)
1.4% ( 6.0) vdr : schedule_timeout (process_timeout)
0.5% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.4% ( 1.8) xfsbufd : schedule_timeout (process_timeout)
0.2% ( 1.0) ifconfig : b44_open (b44_timer)
0.2% ( 1.0) vdr : do_nanosleep (hrtimer_wakeup)
0.2% ( 1.0) tail : do_nanosleep (hrtimer_wakeup)
0.1% ( 0.5) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
SinoVideo 3420D-V02
The name and number schema seems a little intransparent for the whole family of devices. But they are cheap as chips.
I picked up mine new via ebay from a Chinese shop for less than 6 Euros (+pp), including remote and antenna.
It was sold to me as SV3420B but the PCB says SV3420D-V02. The
- SV3420D-V02
[1217714.429823] usb 5-1: new high speed USB device using ehci_hcd and address 11 [1217714.561392] usb 5-1: configuration #1 chosen from 1 choice [1217714.572099] input: HID 18b4:1689 as /class/input/input9 [1217714.600549] input,hidraw0: USB HID v1.11 Keyboard [HID 18b4:1689] on usb-0000:00:1d.7-1 [1217714.601760] usb 5-1: New USB device found, idVendor=18b4, idProduct=1689 [1217714.601896] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Without any driver the device is already recognized as keyboard.
[1220628.851806] dvb-usb: found a 'E3C EC168 DVB-T USB2.0 reference design' in cold state, will try to load a firmware [1220628.852984] firmware: requesting dvb-usb-ec168.fw [1220629.527759] dvb-usb: downloading firmware from file 'dvb-usb-ec168.fw' [1220629.551527] dvb-usb: found a 'E3C EC168 DVB-T USB2.0 reference design' in warm state. [1220629.552845] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. [1220629.554959] DVB: registering new adapter (E3C EC168 DVB-T USB2.0 reference design) [1220629.558609] DVB: registering adapter 0 frontend 0 (E3C EC100 DVB-T)... [1220629.559342] MXL5005S: Attached at address 0xc6 [1220629.560823] dvb-usb: E3C EC168 DVB-T USB2.0 reference design successfully initialized and connected. [1220629.561204] usbcore: registered new interface driver dvb_usb_ec168
After compiling the ec168 driver as described in a possible way to get the ec168 working the device is registered by the dvb_usb framework.
Having it recognized as usb keyboard causes additional 10 wakups per second and an idle load in C0 of 0.4%. I unloaded the usbhid module to have the same baseline for my load tests.
====================================== running zap
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 2.3%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.0%) 188 Mhz 100.0%
C3 7.4ms (97.7%)
Wakeups-from-idle per second : 132.2 interval: 15.0s
no ACPI power usage estimate available
Top causes for wakeups:
51.2% (135.7) USB device 5-1 : TvTUNER (SKGZ)
42.7% (113.1) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
2.7% ( 7.1) zap : schedule_timeout (process_timeout)
0.8% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.7% ( 1.7) xfsbufd : schedule_timeout (process_timeout)
0.4% ( 1.0) ifconfig : b44_open (b44_timer)
0.4% ( 1.0) zap : do_nanosleep (hrtimer_wakeup)
0.2% ( 0.6) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
======================================= running vdr
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 4.4%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.0%) 188 Mhz 100.0%
C3 3.5ms (95.6%)
Wakeups-from-idle per second : 278.3 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
70.8% (222.8) vdr : futex_wait (hrtimer_wakeup)
7.9% ( 24.7) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
7.4% ( 23.3) /sys/bus/usb/devices/5-1
6.3% ( 19.7) vdr : schedule_timeout (process_timeout)
4.4% ( 13.8) <kernel module> : ehci_work (ehci_watchdog)
0.6% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.5% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.3% ( 1.0) ifconfig : b44_open (b44_timer)
0.3% ( 1.0) vdr : do_nanosleep (hrtimer_wakeup)
0.3% ( 1.0) tail : do_nanosleep (hrtimer_wakeup)
--------------------------------------------with force pid filter
================================ zap
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 2.4%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.0ms ( 0.0%) 188 Mhz 100.0%
C3 7.4ms (97.6%)
Wakeups-from-idle per second : 131.8 interval: 15.0s
no ACPI power usage estimate available
Top causes for wakeups:
51.3% (136.1) /sys/bus/usb/devices/5-1
42.7% (113.2) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
2.6% ( 7.0) zap : schedule_timeout (process_timeout)
0.8% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.6% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.4% ( 1.0) ifconfig : b44_open (b44_timer)
0.4% ( 1.0) zap : do_nanosleep (hrtimer_wakeup)
0.3% ( 0.7) kdvb-ad-0-fe-0 : schedule_timeout (process_timeout)
================================= vdr
PowerTOP version 1.10 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 4.4%) 750 Mhz 0.0%
polling 0.0ms ( 0.0%) 563 Mhz 0.0%
C1 halt 0.0ms ( 0.0%) 375 Mhz 0.0%
C2 0.1ms ( 0.0%) 188 Mhz 100.0%
C3 3.7ms (95.6%)
Wakeups-from-idle per second : 267.6 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
76.9% (222.5) vdr : futex_wait (hrtimer_wakeup)
6.4% ( 18.6) vdr : schedule_timeout (process_timeout)
4.4% ( 12.8) <interrupt> : uhci_hcd:usb1, HDA Intel, ehci_hcd:usb5
4.4% ( 12.6) /sys/bus/usb/devices/5-1
4.0% ( 11.7) <kernel module> : ehci_work (ehci_watchdog)
0.7% ( 2.0) xfsaild : schedule_timeout (process_timeout)
0.6% ( 1.6) xfsbufd : schedule_timeout (process_timeout)
0.3% ( 1.0) ifconfig : b44_open (b44_timer)
0.3% ( 1.0) vdr : do_nanosleep (hrtimer_wakeup)
0.3% ( 1.0) tail : do_nanosleep (hrtimer_wakeup)
0.2% ( 0.6) kdvb-ad-1-fe-0 : schedule_timeout (process_timeout)