Brian Smith wrote:
>
> The test always failed. When I decreased the number of threads in the
> test from 5,000 to 1,400 or so, then the tests passed sometimes, and
> sometimes failed. Decreasing the number of threads to under a thousand
> made the test pass consistently. IIRC, the test failed almost
> immediately upon executing.
conc023 creates 5000 threads that all do threadDelay with varying delays. On Windows, with both the threaded and non-threaded runtimes, this results in 5000 OS threads being created, which is usually enough to fill up your VM.
I intend to fix this, at least in the threaded RTS, in fact it'll be part of the
fix for http://hackage.haskell.org/trac/ghc/ticket/637. The I/O manager thread
handles sleeps and signals, but currently isn't implemented on Windows.
It already passes in the threaded RTS and every other way except GHCi: normal, opt, optasm, prof, profasm, threaded1, and threaded2. That is what I thought was strange.
Regards,
Brian
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