> > Can you somehow share your perf.data with me? I'll check what's going > > on. > > https://git.kernel.org/cgit/linux/kernel/git/namhyung/linux-perf.git/plain/tools/perf/perf.timechart.data?h=perf/tmp Hm, I don't see any issue with your data, I can see dd disk io and firefox polls. I attached output.png, but it has some artifacts (I used imagemagick to convert it); if I use Inkscape to view SVG, I don't see any artifacts (maybe there is a problem, but another one).
Do you get different picture (empty process bars) if you run it on your side? If you do, then I'm puzzled...
