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TP Reactor was excessively calling select #1157

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TP Reactor was excessively calling select #1157

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Commits on Jul 14, 2020

  1. TP Reactor was excessively calling select 

    The TP Reactor implementation of the clear_dispatch_mask was implemented
by clearing the entire ready set instead of just removing the handler
that was suspended.  This forced the TP Reactor to potentially dispatch
only a single handler before re-calling an expensive select() call and
restarting the dispatch with the new set returned from select().  This
heavily favored lower order fds and was inefficient.  This originated
with the fix for ACE bugzilla 1890 which appears to have mainly focused
on the single threaded select reactor.
    Daniel Kempenich committed Jul 14, 2020
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