Opened 4 years ago

Closed 4 years ago

#10693 closed bug (duplicate)

Profile ghc -j with an eye for performance issues

Reported by: bgamari Owned by:
Priority: normal Milestone:
Component: Compiler Version: 7.10.1
Keywords: Cc:
Operating System: Unknown/Multiple Architecture: Unknown/Multiple
Type of failure: Compile-time performance bug Test Case:
Blocked By: Blocking:
Related Tickets: #9221 Differential Rev(s):
Wiki Page:


ghc -j doesn't seem to scale as well as it could. Reports claim that even packages with embarasssingly parallel module structures (e.g. highlighting-kate) only scale out to three or so processors.

Profiling a parallel build would be a useful first step to finding out why.

Change History (1)

comment:1 Changed 4 years ago by bgamari

Resolution: duplicate
Status: newclosed

Oops, looks like #9221 already reported this.

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