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<== Date ==> <== Thread ==>

Subject: Re: Commercial RTOS to replace vxWorks
From: Till Straumann <strauman@SLAC.Stanford.EDU>
To: Andrew Johnson <anj@aps.anl.gov>
Cc: john sinclair <sinclair@mail.phy.ornl.gov>, tech talk <tech-talk@aps.anl.gov>
Date: Fri, 21 Feb 2003 13:17:03 -0800
Andrew Johnson wrote:
john sinclair wrote:

Are there any plans to move toward a less expensive RTOS replacement for
vxWorks? I am interested in RTEMS but would also like to be able to
use a commercial product (without having to put up with Wind River).


RTEMS is available as a commercial product - you can pay oarcorp for support if you don't want to do everything yourself. Currently that's the leading alternative to vxWorks for IOCs with real hardware interfaces, although I'm personally interested in Jaluna, an open source (but also commercially supported) derivative of ChorusOS. It shouldn't be very hard to write the OSI routines to get EPICS running on Jaluna, which provides full Posix realtime support

RTEMS also supports the Posix API.


Unfortunately, my performance evaluation software had a bug
which resulted in apparently inferior latency figures
when using the POSIX API.

Repeated tests with the corrected benchmarking software
yielded the same low latencies measured when using
the native API.

-- Till

and a choice of 3 memory models, although nobody's doing this yet. http://www.jaluna.com/

- Andrew




References:
Commercial RTOS to replace vxWorks john sinclair
Re: Commercial RTOS to replace vxWorks Andrew Johnson

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