From time to time I face problems in several long running tcl programs on one of our Windows production Systems, which I'm unfortunally not able to track down.
The source codes are too complicated to post here...
All programs make heavy use of after Events, e.g. to periodically update a flag file on disk, and are execing many external excutables, either in an endless Loop or triggerd by twapi filesystem Monitoring.
What I see yesterday is this: