If you run this code, does the profiling information reveal anything
(profile (super on-paint)))
(define/override (on-char e)
(profile (super on-char e)))
(define frame (new frame% [label "Simple Edit"]
(define canvas (new ec% [parent frame]))
(define text (new text%))
(send canvas set-editor text)
(send frame show #t)
On Fri, Feb 9, 2018 at 11:05 PM, Evan Whitmer <evd...@gmail.com> wrote:
> I forgot to mention that I have a 4K display, and I think that's important
> to note here.
> On Friday, February 9, 2018 at 7:00:18 PM UTC-10, Evan Whitmer wrote:
>> I, too, am having typing latency issues in DrRacket in the definitions
>> window. As Dave noted, the size of the window seems to be related to the
>> issue, and, in my experience, it's not just an issue with the Definitions
>> window. Both the Interactions window and even the following code snippet
>> (taken from StackOverflow) will have this same lag:
>> (define frame (new frame% [label "Simple Edit"]
>> [width 1800]
>> [height 1800]))
>> (define canvas (new editor-canvas% [parent frame]))
>> (define text (new text%))
>> (send canvas set-editor text)
>> (send frame show #t)
>> (define delta (make-object style-delta% 'change-size 14))
>> (send delta set-face "Menlo")
>> (send text change-style delta)
>> I am on Ubuntu 17.10 using Racket 6.11 with the proprietary nVidia drivers
>> and X.org. My GTK version is 3. I don't have this issue with any of the
>> other text editors that I've tried to use.
>> I tried to profile the above text editor, but I am a novice Racketeer and
>> could not figure out a way to profile a thread managed in racket/gui. Does
>> anyone perhaps know of a way to hook the above into a profiler to see what
>> might be the cause of this lag?
>> Has anyone happened to stumble onto this issue recently and solved it?
>> On Saturday, April 1, 2017 at 6:07:28 AM UTC-10, gneuner2 wrote:
>>> On Fri, 31 Mar 2017 13:34:38 -0700 (PDT), Dave Musicant
>>> <musi...@gmail.com> wrote:
>>> >I'm using DrRacket on a 64-bit Ubuntu 16.04 system with the
>>> >default Unity windowing system, and am finding that typing
>>> >in the definitions window is laggy.
>>> I've seen similar behavior on CentOS 6.5-6.8 under Gnome(2) - it has
>>> persisted across a number of OS and Racket versions.
>>> I have seen the lag in Dr Racket with 6.1, 6.5, 6.7 and 6.8. I
>>> compiled 6.1 and 6.5 myself, so there might have been something
>>> strange in those cases, but 6.7 and 6.8 were stock Linux x86_64
>>> Turning off background expansion helps somewhat, but I have found that
>>> limiting memory seems to help the most. On Linux I run Dr Racket with
>>> the limit set to 512MB. That might be too low for some people, but it
>>> works fine for my typical (webserver app) uses.
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