#5897: GHC runtime task workers are not released with C FFI
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Reporter: sanketr | Owner:
Type: bug | Status: closed
Priority: highest | Milestone: 7.4.2
Component: Runtime System | Version: 7.4.1
Resolution: fixed | Keywords: worker, ffi
Os: Unknown/Multiple | Architecture: x86_64 (amd64)
Failure: None/Unknown | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related: #4262
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Comment(by sanketr):
Replying to [comment:12 simonmar]:
> I looked into your example again. Although the RTS was not keeping all
the OS threads around, it ''was'' retaining information about each OS
thread that had been used as a worker in the past, and this was being
printed in the output of `+RTS -s`. Since keeping around all this
information could constitute a space leak, I've dropped it (see the commit
above).
>
> The example program above used to leak space over time, now it runs in
constant space.
>
> The per-Task stats weren't particularly useful anyway, even for me.
Terrific! The per-task stats now look much more useful after this fix.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5897#comment:13>
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