[gst-devel] strange CPU loading for audiotestsrc and filesrc

[Viraj Karandikar]

Hi,

I am seeing some strange behaviour while doing CPU load measurement when
running gstreamer.
I am relying on uptime and idle time give by "cat /proc/uptime" to calculate
CPU load.
We have implemented custom audio source (dalsrc) and sink (dalsink) plugins
for our board (ARM9E on TI DM6446).
I am using gstreamer-0.10.24.

I have following two cases:
Case 1:
gst-launch audiotestsrc wave=silence is_live=true blocksize=160 !
audio/x-raw-int,rate=8000,depth=16,channels=2,width=16,signed=\(boolean\)TRUE,endianness=\(int\)1234
! dalsink
Average CPU load over 5 minutes : 18%

Case 2:
gst-launch filesrc location="wa12fs1_8k_stereo.wav" blocksize=160 ! wavparse
! dalsink
Average CPU load over 5 minutes : 2%

I am not able to explain difference in CPU loading in above 2 cases.
Does anyone have any clue?

regards,
Viraj
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20091008/d0267380/attachment.htm>