mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-06-26 09:50:39 +00:00
Code Issues 1 Projects Releases Wiki Activity

added some thoughts about scheduler doing a little profiling on elements

Browse source 
Original commit message from CVS:
added some thoughts about scheduler doing a little profiling on elements
This commit is contained in:
Stefan Kost 2005-02-16 17:19:06 +00:00
parent 25b9d5e292
commit f38a2c4ea7
1 changed files with 26 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

26
docs/random/ensonic/profiling.txt Normal file
View file

@ -0,0 +1,26 @@
$Id$
Could schedulers do a little profiling?
* scheduler keeps a list of usecs the process function of each element was
running
* process functions are: loop, chain, get
* scheduler keeps a sum of all times
* each gst-element has a profile_percentage field
* when going to play
* scheduler sets sum and all usecs in the list to 0
* when handling an element
* remember old usecs t_old
* take time t1
* call elements processing function
* take time t2
* t_new=t2-t1
* sum+=(t_new-t_old)
* profile_percentage=t_new/sum;
* should the percentage be averaged?
* profile_percentage=(profile_percentage+(t_new/sum))/2.0;
* the profile_percentage shows how much CPU time the element uses in relation
to the whole pipeline