Re: screen update rate on a pi3b+ running stretch?
It's possibly easiest to hack whatever's driving it and stick in a
counter that increments every frame and check 100 or so of them
against the output of gettimeofday() or clock_gettime(). That's the
way I've always done it, which was maybe twice.
xrandr, xdpyinfo, fbset don't do it. You can try tvservice -s but I
think vertical refresh rate isn't what you're looking for exactly.
upstairs# tvservice -s
state 0x12000a [HDMI CEA (16) RGB lim 16:9], 1920x1080 @ 60.00Hz, progressive
That 60.00Hz doesn't change I think since the monitor depends on it.
And if it's double-buffered good luck, you really need how often the
first buffer fills up. Drawing usually happens into an offscreen
buffer then they get swapped, which could mean a pointer points to a
different place.
On 6/25/19, Gene Heskett <gheskett@shentel.net> wrote:
> Greetings all;
>
> So, do we have a utility that can measure the frame rate achieved, for a
> full screen 1920x1080 32 bit display?
>
> Thanks a bunch.
>
> Cheers, Gene Heskett
>
> --
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
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> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
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