[sturp]

I'm new on this forum, so Hello all

I try XBMC on my Mac mini and this software is very cool BUT it uses too much cpu in idle mode

So I build my own version with X-Code and profile the code with Shark (a Mac OS X tool).

It show that the tool spend a lot of time in semaphore handling for SDL. I don't know much in this graphic layer development but I don't seems good...
(maybe it's for menu button selected blinking)



I made another investigation in the next days but if someone can help me on SDL understanding, it could help...

[tslayer]

I think you have the wrong thread there. We know of cpu issues when idle. You can check the linux and windows forums.

elupus is working on a fix.

You can look at http://trac.xbmc.org/ticket/4382 for more details. I believe it applies to all platforms.

[sturp]

I think you have the wrong thread there. We know of cpu issues when idle. You can check the linux and windows forums.

elupus is working on a fix.

You can look at http://trac.xbmc.org/ticket/4382 for more details. I believe it applies to all platforms.

hum, I'm not talking about 100% cpu but only 20%, yes it's few but on my Mac mini it make run faster the fan...

[tslayer]

Yeah, it still may be the same issue. The thread you highlighted should not take that much cpu. It is just waiting indefinitely until a cd/dvd is put in the drive.

On linux, if I have vsync "Always Enabled", I also get about 20%. That is being fixed and should hopefully fix it on all platforms.

Thanks.

[sturp]

Yes, I just saw for the thread for cd/dvd

But interesting, on my Mac, the vsync option is desactivated and I get 15%, but if I check "Always Enabled", I have 11%...
FYI: I'm in debugging mode with X-Code so in window mode (not fullscreen)

Thanks for you quick response, it's cool to see the xbmc community is reactive

[sturp]

So I change the frame limitation in Application.cpp

const static unsigned int singleFrameTime = 40; // default limit 100 fps // sturp: limit 25fps

And the cpu is now at 5% but when the application is not the active windows, the cpu is at 15%

It seems there are lot of work to do to discrease the cpu used in idle mode...

FYI: FrontRow is using 3.5% of cpu in the Movies menu with text entry scrolling.

[tslayer]

Just keep monitoring that trac ticket I mentioned

[sturp]

So I patch the surface.cpp file with the modification provide by elupus (the owner of this track ticket).
But the modification doesn't cover Mac OS X, I move some of this code to "force" the execution on my build and I see a real reduction of cpu usage, 50% lower (from 15% to 7%).
Could you contact this track ticker owner to make the minor modification to integrate the OSX deploiement for his patch ?

[tslayer]

The patch is not ready.

Secondly, make the comment yourself in the trac ticket. It is open for everyone.

Thanks.

[sturp]

I make my comment

ps: sorry, I doesn't know it's the same login/pass on this forum :p