Hello, On Thu, Nov 10, 2016 at 1:39 AM, Piotr Gregor <piotrgregor@xxxxxxxxxxx> wrote: > What is your experience with Ubuntu (16.04) > and rt preempt. > What is your experience with rt preempt and Intel Core i7-6700? We are very happy with our Ivy Bridge systems (i7-3700). But we are not yet happy with Skylake (like i6700), especially when there is some GPU load. But you can take a look here, the system seems to perform OK (not ours): https://www.osadl.org/Latency-plot-of-system-in-rack-c-slot.qa-latencyplot-rcs0.0.html?shadow=0 > Is there any definite "no" for Ubuntu as a real-time operating system? We have used Ubuntu for ages (since 8.04 IIRC) as a development environment. For a kernel we use an lts-kernel with PREEMPT_RT patchset. We never bothered with Ubuntu-specific kernel patches. We use lxc containers to host the development environment, which allows us to target different distributions or Ubuntu releases. A complete Ubuntu desktop system brings along a quite complex default configuration (resolvconf, AppArmor, NetworkManager to just name a few) which you might have to deal with depending on your scenario. But so far, I never got the impression that Ubuntu is not a good fit as a development system for realtime applications. A lot of stuff just works out of the box, installation is trivial and you get regular new releases. We only use Ubuntu LTS releases. They get new hardware support from time to time (backports of kernel and Xorg from newer Ubuntu releases) which makes it possible to even skip a LTS release, using PPA for software we really care about. Disclaimer: Since we are quite happy with Ubuntu/Debian I never checked out other distros. > Would it be better to start from Debian? We switched our target to Debian this year. Partly out of licensing consideration, partly because snapshot.debian.org is just a fantastic service for long lived software. I don't know where Ubuntu is heading. I get the impression that they want to differentiate themselves more and more from the rest of the Linux ecosystem (e.g. Wayland vs Mir) which I don't see as an advantage because it will limit how much we can profit from other peoples experience with different distros. HTH Christoph -- 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
