Tried running the program with +RTS -Nn where n = 2 or more? that should use
more OS threads
On Sun, Dec 21, 2008 at 10:43 PM, Günther Schmidt
Hi,
in an application of mine I start a long-running operation in a thread via forkIO so that the UI process doesn't get blocked. It just so happens, that the long-running process also takes the CPU to nearly 100% while it runs.
During that time the run-time system does *not* switch back and forth between the UI-process and the long-running task, it seems that the UI process only gets woken up *after* the high CPU thread finishes completely.
To the effect of course that it makes no difference at all to the UIs responsiveness whether I use forkIO or not.
The long running process is pretty atomic, it's a single query to the database which takes up to a minute to complete so I don't see a chance to squeeze a "mainIteration" in there.
What can I do?
Günther
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