The is HN so you are allowed to hold forth out of pure ignorance, if you want to. Android-wide and ChromeOS-wide profiling produce binaries including the Linux kernel that are peak-optimized for actual conditions in the field and real use cases. They ship the only profile-optimized Linux kernels you can get from any distribution. It is a demonstrably better product through telemetry.
Got a link to any information on this, especially the collection of the profile information from user's devices? The only reference I can see to PGO on android is the support they have for a more traditional flow (create special instrumented binary, run a 'representative' workload or two, get profile data for PGO). It would be especially interesting if there's any info on how much of a performance improvement this yielded.
