Experimental Physics and Industrial Control System
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On Nov 8, 2005, at 6:22 AM, Ralph Lange wrote: On my linux box (Debian 3.1), epicsMessageQueueTestHost yields unexpected results: aragon: .../base/3-14-X > bin/linux-x86/epicsMessageQueueTestHost Simple single-thread tests. [...] Single receiver, single sender tests. Systems with priority-based scheduler should send only 4 or 5 messages (sender priority > receiver priority). Sent 5 messages. Systems with priority-based scheduler should send 10 messages (sender priority < receiver priority). Sent 5 messages. All systems should send 10 messages (sender pauses after sending each message). Sent 10 messages. Shouldn't the middle case (sender priority < receiver priority) show 10 messages being sent instead of 5?
You're seeing the fact that your linux box doesn't have a strict priority-based scheduler -- i.e. it's not a "real-time" operating system.
-- Eric Norum <[email protected]> Advanced Photon Source Argonne National Laboratory (630) 252-4793
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ANJ, 02 Feb 2012 |
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