Background: http://robert.ocallahan.org/2016/02/introducing-rr-chaos-mode.html
I just landed on rr master support for a "-h" option which enables a chaos mode for rr recording. This is designed to help reproduce intermittent test failures under rr. We already have a few reports of people using this successfully to find difficult bugs. Even though rr works only on desktop Linux (including VMs), I've reproduced a bug that only showed up in automation on Android, and khuey reproduced a bug that only showed up on OSX 10.6. I'm continuing to do experiments to try to reproduce more of our top intermittents, but you may already find rr chaos mode useful. I recommend running a single test or a small group of tests continuously; one of my bugs only had a few failing runs out of a thousand. I'm sure there are still bugs rr can't reproduce, and I'm very interested in hearing about bugs that eventually get fixed but that rr was not able to reproduce. By studying such bugs we can improve rr chaos mode so it can find them. Obviously, once rr chaos mode has proved itself, we should get some automation around it. I'd like a bit more experience with it before we have that discussion. Rob -- lbir ye,ea yer.tnietoehr rdn rdsme,anea lurpr edna e hnysnenh hhe uresyf toD selthor stor edna siewaoeodm or v sstvr esBa kbvted,t rdsme,aoreseoouoto o l euetiuruewFa kbn e hnystoivateweh uresyf tulsa rehr rdm or rnea lurpr .a war hsrer holsa rodvted,t nenh hneireseoouot.tniesiewaoeivatewt sstvr esn _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
