Our infrastructure at Mozilla does a great job of supporting all the jobs we need to run jobs for the thousands of pushes we do each month. Currently Talos runs on real hardware (and we have no plans to change that), but it does mean that we have a limited pool of available machines. Right now this isn't a problem for Linux 32 or 64 since we don't run any other jobs on those platforms.
The problem we do have is on OSX and Windows, and in the last 2 weeks we have had a big problem with backlog on Windows. The main reason we have a problem on OSX and Windows is because we run all the unit tests on there as well. Granted we have a larger pool of machines, but we run a considerably larger volume of tests on there. Trying to be smart about what we are doing, bug 1204920 [1] was filed to look into what would happen if we stopped running Talos on Linux32. We would still have OSX, Windows, and Linux64 support and from looking at all the data for the last 90 days, there are very few minor differences between 32 and 64 when it comes to catching regressions. After looking into this, we realized that we could reimage the linux32 machines as windows machines- this would then solve our backlog and give us some breathing room on capacity until we find other ways to reduce the load or make a more formal decision to increase the machine pool. Sadly there are really no plans to formally add back Linux32 support. What does Linux32 give us that Linux64 doesn't when it comes to Talos results? I am looking at this from a narrow lens, quite possibly someone else has ideas of what might be more useful. Overall we are serious about doing this, but want to do it knowing more so at what cost. Thanks for reading and fixing Performance regressions when they show up in your patches! [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1204920 _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
