Why?
DBUS is approximately 18 times slower than CORBA
From CORBA, DCOP and DBUS. A performance comparison

So why has everyone dropped Corba?

Hereìs the whole paper, written many years ago.

CORBA_DCOP_and_DBUS_A_performance_comparDownload

There is also another oldish document at https://wiki.gnome.org/Accessibility/Documentation/GNOME2/ATSPI2-Investigation/IPCResults (last edited in the 2013) showing similar re
https://monodes.com/predaelli/2023/10/22/why/
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