The paint times for 7.2 seem inconsistent with your previous tests... In any case, it seems mouse event handling takes longer in 7.3 based your results. What happens if you update the callback to discard any mouse events older than, say 50 milliseconds?
Alex. On Friday, June 7, 2019 at 7:27:32 PM UTC+8, evdubs wrote: > > I changed the Linux line of code to: > > [time-stamp (current-milliseconds)] > > Is there a reason why you did not want to do that? > > Any way, when I do that, here are the results I get: > > $ ~/racket-7.2/bin/racket chart-lag-test.rkt > Mouse > Min: 0.132080078125 > Max: 23.10107421875 > Mean: 3.257062241367008 > StdDev: 4.589805152078677 > > Paint > Min: 0.178955078125 > Max: 102.94091796875 > Mean: 28.86041259765625 > StdDev: 42.84071031974706 > > $ ~/racket-7.3.0.4/bin/racket chart-lag-test.rkt > Mouse > Min: 0.126953125 > Max: 202.34912109375 > Mean: 25.70277455891149 > StdDev: 38.4063903237421 > > Paint > Min: 0.175048828125 > Max: 21.754150390625 > Mean: 7.548767089843749 > StdDev: 8.728339324923978 > > If this modification is okay, I guess this is getting somewhere? > > Evan > > On Wednesday, June 5, 2019 at 5:43:40 PM UTC-10, Alex Harsanyi wrote: >> >> >> >> On Wednesday, June 5, 2019 at 9:23:26 PM UTC+8, Alex Harsanyi wrote: >>> >>> >>> >>> On Wednesday, June 5, 2019 at 8:51:48 PM UTC+8, evdubs wrote: >>>> >>>> I ran the program with your modifications, but counter to the >>>> documentation >>>> <https://docs.racket-lang.org/gui/event_.html?q=get-time-stamp#%28meth._%28%28%28lib._mred%2Fmain..rkt%29._event~25%29._get-time-stamp%29%29>, >>>> >>>> the values I get from get-time-stamp don't seem at all similar to >>>> current-milliseconds or current-inexact-milliseconds. I ended up >>>> defining delta as follows (with 1559695139340 being a guess): >>>> >>>> (define delta (- (current-inexact-milliseconds) 1559695139340 (send >>>> event get-time-stamp))) >>>> >>>> >>> On my machine, `get-time-stamp` always returns 0 -- this indicates that >>> the event% object itself is copied somewhere along the way but the >>> timestamp is not copied, The 1559695139340 is just the unix timestamp from >>> when you ran the code first time. I don't think the mouse test is relevant >>> as is... unfortunately I don't have any more suggestions for now... >>> >> >> It looks like the `get-time-stamp` returns a value that is not what the >> documentation specifies and it is also platform specific, I created an >> issue with the relevant details here: >> https://github.com/racket/gui/issues/132 >> >> For now, I cannot think of a way to determine how old a mouse event is >> when the callback is invoked. >> >> >>> >>> Alex. >>> >>> -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/2c303a34-c647-42f8-8c29-aeb1779c8807%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
