*** System ***
* ML profiling has been updated and reactivated, after some degration in
Isabelle2021:
- "isabelle build -o threads=1 -o profiling=..." works properly
within the PIDE session context;
- "isabelle profiling_report" now uses the session build database
(like "isabelle log");
- output uses non-intrusive tracing messages, instead of warnings.
This refers to Isabelle/014b944f4972.
For example:
isabelle build -o threads=1 -o profiling=time -c ZF
isabelle profiling_report ZF
isabelle profiling_report -c ZF
The threads=1 is required right now. A regular parallel session crashes like
this:
exception Fail raised (line 506 of "profiling.cpp"): Profiling is currently
active
(I need to ask David Matthews about it: a few years ago parallel profiling did
work to some extent.)
Makarius
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