This patch is an attempt to port EMC to run on realtime capable linux without a realtime hypervisor.
Linux-RT currently is not ready to support the hard realtime requirements of EMC, but I think it's a good idea to start playing with it. The patch is based on an earlier patchset published by Jeff. I'd like to maintain the EMC linux-rt support and other people are welcome to start working on it, too. Latencies currently are more or less crappy, because certain operations induce _huge_ latency spikes (most likely caused by the remaining huge locks in the kernel. This is being worked on.) Here's an example run of the latency test on linux-rt: http://bu3sch.de/misc/linuxrt-snapshot.png jitter can be brought into the millisecond range with certain operations, so there's room for improvement. ;) The screenshot is what I get without stressing the system. To run EMC on linux-rt, get the latest RT tree git://git.kernel.org/pub/scm/linux/kernel/git/clrkwllms/rt-linux.git and compile EMC with the --with-realtime=linux option. The patch is at http://bu3sch.de/patches/misc/emc-on-linux-rt.patch -- Greetings, Michael. ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
