[Tcl-bugs] [Tk] (marc_culler) tkt (Open): XCopyArea is very (very) slow on macOS with version 9

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Ticket Change [f4505cbec57de6ccca07bfedccb09589f8a2d17a10cd77cc6b5946302937af76]
  [XCopyArea is very (very) slow on macOS with version 9]
  By      marc_culler
  For     Tk
  On      2025-07-26T02:58:22.864
  Details https://core.tcl-lang.org/tk/tinfo?name=f4505cbec57de6ccca07bfedccb09589f8a2d17a10cd77cc6b5946302937af76
  Ticket  https://core.tcl-lang.org/tk/tktview/4af5ca1921122de63f37a99beefb2f5dbef72518

Changed Fields
  icomment: > At first, I thought it might be due to epoll/kqueue **TIP458**

            While I still don't understand what "it" refers to, I did look up  TIP
            #458 and I agree that whether epoll is used in the notifier  is
            totally unrelated to the time required for updating graphics.  The
            graphics updates do not involve the notifier at all. No events  are
            being processed. No files are being read or written. And,  even if the
            notifier were involved, using epoll should only improve  things.

            One thing that is happening in CGContextDrawImage, on my laptop
            anyway,  is that the entire image must be resampled in order to
            account for  the Retina display.
  login:    marc_culler
  username: Marc Culler

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