On Thu, Apr 30, 2015 at 03:41:55PM +0900, Carsten Haitzler wrote:
> once you realize just how much it's doing... you begin to go "wow - it manages
> to cope with all that that well? WOW!" :) on the long-term is to make a lot of
> this vertex generation threaded so we'd still soak up cpu - but async.
Got it.
> > Thanks for the suggestion. I tried triple buffering and it does create bad
> > artifacts.
>
> quite possible. but did you look at the difference in cpu usage? switching to
> pager plain instead of pager as a module will reduce the render area IF you
> had
> partial rendering...
So I understand the theory you just explained, but practise disagrees.
New snapshot pager:
e19 idles around 8% CPU
mplayer with e19 in opengl rendering: 16% CPU
mplayer with e19 in software rendering: 12% CPU
Old non snapshotting pager:
e19 idles around 1% CPU
mplayer with e19 in opengl rendering: 10% CPU
mplayer with e19 in software rendering: 5% CPU
So whatever OpenGL e19 is doing, it's taking a lot more CPU to use my GPU
than software rendering.
Does that make sense?
Also, disabling the snapshotting pager made a huge difference, especially
for e19 at idle.
Just for reference, mplayer was using 3% CPU to play my video, so I was a
bit upset when e19 was using 10-15%, i.e. 3 to 5x more CPU than mplayer,
to display it.
One other things I was thinking about. I have 3 virtual screens. With the
snapshotting pager, it has to render my 2 other screens to put them in the
pager. Without it, it doesn't have to render the 2 non visible screens,
correct?
If so, that would explain the big savings I'm seeing.
> > Engine: OpenGL (I may try software rendering again, it somehow looked faster
> > on my quadcore CPU)
> > Tear-free: disabled
> > Texture from pixmap: enabled
> > Swapping method: autho
>
> you really want tear-free. really. disabling this is just doing yourself a
> disservice. :)
Thanks, I turned tear free back on.
> > X-messages: send flush and send dump enabled
> >
> > Hopefully these are decent options for reduced CPU/GPU load.
> > It would be awesome if you had a preset like the old E where you could say
> > "low power system" and it would dial down anything known expensive, but in
> > the meantime, I very much appreciate your direct help :)
>
> you have a quad core system... not a low power thing. :)
If you make my laptop warm, spin up its fans, and half its battery life,
we're not going to be friends though ;)
Anyway, looks like using software rendering and disabling the snapshotting
pager made things much better.
Thanks for your help.
Now, I still have a bug I haven't pinned down yet:
On occasion, e19 will unminimize a window (take it from the list of
minimized windows and display it in full) when I close an e dialog or
minimize another window. Quite strange.
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
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