[concurrency-interest] ForkJoinPool does not achieve expected parallelism
rco at quartetfs.com
Wed May 23 05:25:38 EDT 2012
Thanks for the explanation and the quick fix!
On Wed, May 23, 2012 at 1:17 AM, Doug Lea <dl at cs.oswego.edu> wrote:
> On 05/22/12 12:20, Romain Colle wrote:
> Thanks for the nicely conceived test case!
> The problem was lack of a secondary signalling check
> (present in previous versions) that isn't now needed
> for submissions queues, but sometimes is otherwise.
> This is now in updated CVS and jar files.
> I'm not quite sure why the initial "2" was put there.
> It allows some parallelization of signalling, by
> letting other threads help with wakeups when
> they find work.
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