On Tue, 29 Nov 2011 19:51:26 +1000 David Seikel <onef...@gmail.com> wrote:
> While I'm happy that EFL is working on the tiny little embedded 800MHz > 486 board, it might be a tad underpowered. > > At one point during this devices typical usage, it has to send stuff to > a serial printer, play a sound (through a USB based built in sound > chip), AND do a simple edje animation. At other times, it might be > doing one of the more complex animations, but need to play a short > sound on demand. The printer is kinda fussy about the timing of stuff > sent to it. > > After a short bit of testing, the sounds sometimes stutter quite badly > during the heavier animations, but is smooth during the others. > However, this is in a test mode, where there is more stuff on the > screen to slow things down. > > It's my understanding that edje runs in the idler, so shouldn't the > sound and printer, which both use ecore FD handlers to know when it's a > good time to write, have priority? > > I can probably fine tune things enough with judicious edje freezes, or > frame time, or something. It does not really matter if the animations > are a little jerky, might not even be noticeable, but the sound and > printing have to be spot on. > > Any hints from those more experienced with edge and FD handlers? > it's important to keep in mind that ANY blocking will impede execution of the main loop. fd handlers are called as soon as they are able, but select() is limited by the next timer's duration; if you have lots of timers (eg. animations) playing, select() will be available for shorter amounts of time, potentially leading to i/o starvation while timers and related functions do their work. ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
