On Mon, Dec 16, 2013 at 7:30 AM, Daniel van Vugt <daniel.van.v...@canonical.com> wrote: > Yes indeed. I did think about that, but if you look at the merge proposal > it's all about using the existing reports unmodified right now. And my > primary task was to assess the feasibility of nesting vs non-nested. > > I wasn't going to spend any more time on input latency measurements this > week but perhaps there is sufficient interest to get more details... > >
Out of curiosity: When you say leveraging existing reports, does that mean this evaluation is using the lttng traces? Thanks, Thomas > > On 16/12/13 14:27, Andreas Pokorny wrote: >> >> Hi, >> Can we split the times up? .. decoding from evdev until a EV_SYN .. >> internal processing in the shell.. transfer to client? >> >> >> >> On Mon, Dec 16, 2013 at 6:52 AM, Daniel van Vugt >> <daniel.van.v...@canonical.com <mailto:daniel.van.v...@canonical.com>> >> >> wrote: >> >> If I had a theory, I could test if it correlates with the spikes. At >> the moment I don't even have a theory. >> >> The other weird thing I didn't mention was that the "lowlatency" >> kernel has higher latency :). But it was worth a try. As are >> different kernel schedulers, I haven't tried playing with them yet. >> >> >> >> On 13/12/13 18:27, Christopher James Halse Rogers wrote: >> >> On Fri, 2013-12-13 at 17:31 +0800, Daniel van Vugt wrote: >> >> Here are some fun numbers I've collected about the latency >> between input >> events sent from the top-level Mir server to a client. All in >> milliseconds... >> >> Desktop (3.12.0-7-generic) >> Direct 0.8ms >> Nested 1.3ms >> >> Desktop (3.11.0-11-lowlatency) >> Direct 1.0ms >> Nested 1.7ms >> >> Nexus4 (3.4.0-3-mako) >> Direct 0.9ms >> Nested 1.5ms with high variance; frequent spikes to 73ms. >> Sometimes 700ms. >> >> >> Do we have any way to get insight into the spikes? Something >> strange is >> obviously happening when the variance is ~3 orders of magnitude. >> >> >> >> >> -- >> Mir-devel mailing list >> Mir-devel@lists.ubuntu.com <mailto:Mir-devel@lists.ubuntu.com> >> >> Modify settings or unsubscribe at: >> https://lists.ubuntu.com/__mailman/listinfo/mir-devel >> <https://lists.ubuntu.com/mailman/listinfo/mir-devel> >> >> > > -- > Mir-devel mailing list > Mir-devel@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/mir-devel -- Mir-devel mailing list Mir-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/mir-devel
