[Boost-bugs] [Boost C++ Libraries] #10496: 100% cpu usage when reading serial port on MacOSX

Subject: [Boost-bugs] [Boost C++ Libraries] #10496: 100% cpu usage when reading serial port on MacOSX
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-09-11 21:32:48


#10496: 100% cpu usage when reading serial port on MacOSX
-------------------------------------------+----------------------------
 Reporter: Christopher Moore <crmoore@…> | Owner: chris_kohlhoff
     Type: Bugs | Status: new
Milestone: To Be Determined | Component: asio
  Version: Boost 1.56.0 | Severity: Problem
 Keywords: |
-------------------------------------------+----------------------------
 Simple test program is attached. All it does is setup a serial port and
 start waiting for data. It prints the first data it receives, and quits.
 It is using 100% cpu (according to activity monitor).

 I've tried with the following serial ports: silab usb adapter, prolific
 usb adapter, and pty with master attached to socat.

 The profiler puts most of the time in ```kevent``` called from
 ```boost::asio::detail::kqueue_reactor::run(bool,
 boost::asio::detail::op_queue<boost::asio::detail::task_io_service_operation>&)```

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10496>
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