On Tuesday 28 August 2012 03:09:29 Lars Segerlund did opine: > No I don't think I can run userspace code unmodified in rt-preempt, > but it's not a module either. > > What you need is rt-specific code, but it can be run as a user as > long as the privileges are set properly and priorities. > The nice part is that it's user space programming :-D ... albeit not > without rt concearns. > > Since I did state that rt-preempt implements POSIX , there are > rt-threads so I don't think there is a problem there, the prefaulting > nd such of stack and memory must be similar ? > > Doesn't HAL use rtapi threads ? ( in this case I really do not > remember, and it might be a case of RTFM on my part ). > > / regards, Lars.
The last time I played with an rt patched kernel on this machine was probably 5 years ago, so my comments are probably dated. At that time, very few high motion video protocols worked. tvtime was DOA for instance, as was gxine. The feel of the machine however (I wasn't running linuxcnc on this machine then) was great, on a par with a current kernel with the bfs patches. Frankly, for everyday use, this 2.6.32-122-rtai kernel, while it will run linuxcnc, is for normal uses a steaming pile of crap. The cpu scheduler thinks email is something it will do when it gets damned good an ready. And it usually isn't ready. And I do a lot of "swapoff -a;swapon -a"'s in between reboots just to keep kmail giving me the next unread msg in less than 20 seconds, a process it can do at 20 msgs a second when its in the mood to give kmail the cycles it needs. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! What happened last night can happen again. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
