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From: elns <look@the.footer.invalid>
Newsgroups: comp.lang.tcl
Subject: Re: Performance problems with "photo copy -to"
Date: Thu, 7 Nov 2024 23:44:49 +0100
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On 11/7/24 21:43, Paul Obermeier wrote:
> 
> Can anybody confirm my measurements?
> 

Using Tcl 8.6.15, Tk 8.6.15
Time for  100 copies:  1.31 seconds ( 13 milliseconds / copy)
Time for  400 copies: 20.32 seconds ( 50 milliseconds / copy)
Time for  900 copies: 102.27 seconds (113 milliseconds / copy)

Using Tcl 9.0.0, Tk 9.0.0
Time for  100 copies:  1.17 seconds ( 11 milliseconds / copy)
Time for  400 copies: 16.84 seconds ( 42 milliseconds / copy)
Time for  900 copies: 84.76 seconds ( 94 milliseconds / copy)

So, I see a performance increase with Tcl/Tk 9.0.0 instead of a decrease.

B.t.w.:
- Having replaced in your script [package version Tk] with $tk_patchLevel
   to prevent that multiple installed Tk versions are reported.
- The combination Tcl8.7 and Tk9 is not avaiable to me
- Did you perhaps use different compiler optimizations for your builds?
   (My builds are all without compiler optimizations.)


Regards,
Erik Leunissen
-- 
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