On Wed, 19 May 2021 19:46:43 +0100, Martin Wynne via fpc-pascal <fpc-pascal@lists.freepascal.org> wrote:
>On 18/05/2021 20:59, Bo Berglund via fpc-pascal wrote: >> I have a pretty sizable console app written with Delphi 15 years ago but >> ported >> to Linux using FreePascal (3.2.0) with Lazarus (2.0.12) as IDE. > >I have the same problem with high CPU usage for a 20-year-old Delphi App >compiled in Lazarus(2.0) > >When run in debug mode within the Lazarus IDE it runs fine. > >When run stand-alone as a Windows exe the CPU usage shoots up to 30% and >stays there. > >I found that the problem is in the Lazarus Application.OnIdle event, >which fails to honour the Done parameter and runs continuously: > > >http://docwiki.embarcadero.com/Libraries/Sydney/en/Vcl.Forms.TApplication.OnIdle > >Martin. The link you posted shows a page where Forms are used. My app does not use Forms. Is your application a GUI type app? Mine is specifically ported to be a non-GUI console app so there are no GUI-realted items in there like Form dependencies. For example Application.Processmessages is totally non-existent. I had a lot of trouble removing all of the GUI-related stuff from the Delphi code when porting. Had to rewrite parts of the underlying system to get it done. -- Bo Berglund Developer in Sweden _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
