On Wed, Sep 15, 2010 at 02:48:19PM +0200, Sergio Ruocco wrote: > Pradyumna Sampath wrote: > > I agree. Hard, soft ... far too qualitative for a discussion like > > this. Numbers, test cases and applications determine different > > meanings of these words. > > Right. Hard and Soft realtime discussions end up always in useless > infinite loops. The *applications*' *requirements* are hard or soft. > > These requirements reflect in the OS, the CPU, the IO devices, and more > typically a convolution of all of them, depending on what the > application does, i.e., the actual sequence of computations, OS > syscalls, IO operations and so on... I did a Linux Journal article on this topic a few years ago: http://www.linuxjournal.com/article/9361 I also did a portion of a short course on this topic last year: http://www.rdrop.com/users/paulmck/scalability/paper/ACACES2009/4-LKRT.2009.07.16a.pdf http://www.rdrop.com/users/paulmck/scalability/paper/ACACES2009/5-AppRT.2009.07.17b.pdf Thanx, Paul > > Top copy a phrase from one of the presentations from dresden. > > Which presentation? I am curious to read it. > > > Real-time need not always be real fast. > > "Real fast is not real-time" is a catchy phrase which comes from this > very old workshop: > > http://www.langston.com/Papers/uk.pdf > > I used it to motivate an investigation in the real-time properties of a > "real fast" microkernel: > > http://www.hindawi.com/journals/es/2008/234710.abs.html > > Have fun! > > Sergio > -- > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
