Experimental Physics and Industrial Control System
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Same results:
5 messages on Linux, 10 messages on HP-UX for the middle test.
Ralph
Marty Kraimer wrote:
Ralph,
Can you turn on real time priorities and try again?
Look at configure/CONFIG_SITE
Marty
On Nov 8, 2005, at 6:55 AM, Eric Norum wrote:
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.
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- Replies:
- Re: 3.14.8@Linux: OSS priorities problem? Ernest L. Williams Jr.
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- Re: 3.14.8@Linux: OSS priorities problem? Eric Norum
- Re: 3.14.8@Linux: OSS priorities problem? Marty Kraimer
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ANJ, 02 Feb 2012 |
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