Faculty of Information Technology
Software Engineering Group

Opened 6 years ago

#121 new defect

High CPU usage in REPL on Windows

Reported by: Jan Vrany Owned by:
Priority: major Milestone:
Component: default Keywords:
Cc: Also affects CVS HEAD (eXept version): no


When St/X is started without access to graphical environment it enters a REPL. In Windows REPL causes high CPU usage.

It seems that for whatever reason St/X keeps polling for I/O which is what burns the CPU. Note, that in order to reproduce this you need to run St/X in a way that it has no access to Winsta0 window station. One way to simulate this is to hack WinWorkstation>>primInitializeFor: to always return nil

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