#3553: parallel gc suffers badly if one thread is descheduled
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Reporter: simonmar | Owner: simonmar
Type: bug | Status: closed
Priority: normal | Milestone: 6.12.2
Component: Runtime System | Version: 6.10.4
Resolution: fixed | Keywords:
Difficulty: Unknown | Os: Unknown/Multiple
Testcase: | Architecture: Unknown/Multiple
Failure: None/Unknown |
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Comment(by wuzzeb):
I know you said you weren't going to investigate further and the ticket is
closed, so I am just adding a pointer to some info for future
investigation if someone decides to look into it again (I might myself if
I become more familiar with ghc internals).
There is a recent patch to the linux kernel to implement a futux which
spins in the kernel, see http://thread.gmane.org/gmane.linux.kernel/970412
You can spin in the kernel until the lock is released or you are scheduled
out, might be closer to what ghc wants.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3553#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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