WCS System Load climbs to 100% apon opening

[GoogleCodeExporter]

What steps will reproduce the problem?
1. simply run/open the program
2.
3.

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?
WebCamStudio for GNU/Linux 0.57 beta 2 (Build:140)

Please provide any additional information below.

the previous version from the repositories never had this issue and obviously 
once the program reaches 100% it effects streaming by making the framerate very 
choppy, rather than a smooth 30fps

my hardware performance isnt even close to being effected while runing this 
program, none of my quad core processors are even past the 25% mark while 
running WCS and i have 4 gigs of RAM which idles around 500mb even with WCS 
running.

so this is clearly a bug

another note, not sure why, but WCS doesnt even show up in my list of processes 
running, i see Java which i know is used for WCS but even that process is only 
using about 25%

im thinking the fact there are 2 mini "preview" windows on the WCS control 
panel which cant be disabled is possibly causing unnecessary usage, even though 
as i stated the program jumps to 100% even without actually running any streams

example:

http://img51.imageshack.us/img51/4233/screenshot2a.gif

Original issue reported on code.google.com by [email protected] on 9 Aug 2011 at 12:50

[GoogleCodeExporter]

I am currently hunting this bug on my laptop.  It happens when I play a movie 
and the output is at 640x480...

I've just finished modifying the code to help this issue.

Could you provide me with a Studio generating this issue?

Original comment by patrick.balleux on 11 Aug 2011 at 9:52

• Changed state: Accepted
• Added labels: Priority-High
• Removed labels: Priority-Medium

[GoogleCodeExporter]

what do you mean by Studio generating the issue?

i posted the version of your program that im using

as stated, without even trying to broadcast anything it will gradually rise up 
in usage till it reaches 100% after a while it may drop down and start 
fluctuating around %80-100 but once i do try to broadcast it stays at 100%

the normal broadcasting i use with the program is "Desktop" view with the 
160x120 output, 30fps, high quality

or a DV cam with the same output settings

Original comment by [email protected] on 11 Aug 2011 at 4:22

[GoogleCodeExporter]

By Studio, I wanted to know what kind of source you were using.

As for processes, you won't find WebcamStudio but java since this is a java 
application...

Are you capturing the whole Desktop?  Also, I found out that using a desktop 
with compiz enabled, seems to trigger that weird issue where the CPU will get 
to 100%...

I'm still trying to figure out why Xorg and Compiz are creating this.  But 
running in a classic desktop does not trigger the problem.

I've been also working on the output where the version you currently use is not 
actually outputing at 30fps...  I still have some tests to do, but things are 
looking good.

Could you validate if you can trigger the issue in a classic gnome desktop 
without compiz enable?

Original comment by patrick.balleux on 25 Aug 2011 at 7:28

[GoogleCodeExporter]

i never use compiz as my visual effects is set to none and i dont see it in my 
processes until i switch it to "Extra" then i switch back and it closes so 
thats not an issue.

i dont capture the entire desktop, the capture size is normally no larger than 
320x240

what version of browser and flash are you using/testing, do you have an older 
recommended version? i dont mind installing an older version if it will fix 
things

Original comment by [email protected] on 26 Aug 2011 at 3:56

[GoogleCodeExporter]

This is strange, I am able to run WS smoothly on a laptop dual core with 2Gigs 
or ram...

You said that compiz cannot be started on your setup?  What kind of video card 
do you have?  

Original comment by patrick.balleux on 8 Oct 2011 at 4:41

[GoogleCodeExporter]

WebcamStudio 0.60 Alpha 1 seems to fix this issue

it shows a maximum of 776mb of memory at the bottom and rendering live desktop 
capture only uses around 50mb and i get a steady 30fps

only issue i have now, is theres a slight delay when looking at the preview 
built-in to your app, which translate into any flash cam site, even tho it says 
30 +/- 1 fps almost steady

do you think this could be, because im using OpenJDK and not ORACLE java? is 
there any known difference in performance?

Original comment by [email protected] on 12 May 2012 at 11:14