From: D. Peter Siddons (siddons@bnl.gov)
Date: Wed Feb 21 2001 - 08:42:13 EST
Hi Tim, No, it's not. At least not without adding some extensions (RTLinux, for example). I just discovered an open source RT operating system with a fairly complete set of features calle RTEMS (http://www.oarcorp.com/RTEMS/rtems.html). I don't have much experience with it yet, but it does work, and there are ports to various processors. Pete Siddons. Tim Noell wrote: > > Hi uCLinux'ers: > > I'm unfamiliar with uCLinux, and have some questions. I have scanned over the > FAQ and the list archives and didn't see these questions before, so here goes > ... (hope I didn't miss them ...) > > Is uCLinux a Real Time OS? > > More specifically, > > 1) Is interrupt latency bounded? > 2) Is scheduling latency bounded? > 3) Is the scheduler priority-based pre-emptive, or "age" based, or both (e.g., > age up to a max, then RT_[FIFO|SCHED] above that)? > 4) When running in supervisor mode of the CPU, is the multi-tasking then > cooperative instead of priority-based pre-emptive? (as is the case w/Linux) ... > > I am considering using uCLinux on a low-end embedded project, but my real-time > concerns are more important in this application than if the processor is > transitioned between user and supervisor modes. > > If uCLinux is not a true RTOS, what do you recommend? eCos looks interesting, > but I haven't dug too deep yet ... > > Again, I ask for forgiveness in advance if these questions have already been > discussed ... :-) > > Thanks in advance, > Tim > > // Tim Noell > // Specialist, Business Printer Division > // Lexmark International, Inc. > // "Only dead fish go with the flow." > > This message resent by the uclinux-dev@uclinux.org list server http://www.uClinux.org/ This message resent by the uclinux-dev@uclinux.org list server http://www.uClinux.org/
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