Experimental Physics and
Industrial Control System

Heinz Junkes via Core-talk <core-talk at aps.anl.gov> · Tue, 2 Jun 2020 18:00:46 +0200

> On 26. May 2020, at 05:45, Johnson, Andrew N. via Core-talk <core-talk at aps.anl.gov> wrote:
> 
> 
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> Heinz, If there is a measurable performance advantage in providing an implementation of the epicsMessageQueue based on Posix message queues I don’t have an objection in our providing one for other OSs, but we would have to work out how to exclude Darwin builds from the Posix rule since MacOS X doesn’t have a mqueue.h header at all.
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> I do remember that there are a few places in the default implementation where in the course of a single send or receive operation there may be multiple task switches that could occur between the sending and receiving threads. However if there isn’t likely to be much of a performance gain I don’t know whether it’s worth spending much time on this.
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> - Andrew
> 

Is there already a performance test for the epicsMessageQueues implementation? Otherwise, I'll give it a try.

Gruss Heinz

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System