[Tcl-bugs] [Tk] (erikleunissen) tkt (Open): "update idletasks" command is about 8 times slower

[<no...@tc...>]

Automated mail by fx, on behalf of no...@tc...

Ticket Change [5a808db250278957e6f503ded6d40a0f6e4a2c57bd874ff684a1d31a233b179c]
  ["update idletasks" command is about 8 times slower]
  By      erikleunissen
  For     Tk
  On      2025-10-23T16:24:55.111
  Details https://core.tcl-lang.org/tk/tinfo?name=5a808db250278957e6f503ded6d40a0f6e4a2c57bd874ff684a1d31a233b179c
  Ticket  https://core.tcl-lang.org/tk/tktview/7168473e104fe406d4302c69605ab268ea380d4f

Changed Fields
  icomment: I'm getting the opposite effect: on 9.1, the command is substantially
            faster than on 8.6:

            % set tcl_patchLevel  8.6.17  % time {update idletasks} 1000  5.796
            microseconds per iteration

            % set tcl_patchLevel  9.1a0  % time {update idletasks} 1000  0.659
            microseconds per iteration

            Several things to check for:  * the invocation of the time command
            that you used, results in just a  single run. That's not reliable
            enough. In the exercise above I'm using  1000 runs.  * there are two
            different variations of the "update" command:  - the Tcl update
            command (without Tk loaded)  - the Tk update command (package Tk
            loaded)  The latter is considerable slower than the former. Which one
            did you use for  the comparison?
  login:    erikleunissen

------------------------------------------------------------
See Tcl/Tk development @ http://core.tcl-lang.org/
------------------------------------------------------------