On Tue, Dec 1, 2020 at 6:19 PM Krunal Bauskar <krunalbaus...@gmail.com> wrote: > I would request you guys to re-think it from this perspective to help ensure > that PGSQL can scale well on ARM. > s_lock becomes a top-most function and LSE is not a universal solution but > CAS surely helps ease the main bottleneck.
CAS patch isn't proven to be a universal solution as well. We have tested the patch on just a few processors, and Tom has seen the regression [1]. The benchmark used by Tom was artificial, but the results may be relevant for some real-life workload. I'm expressing just my personal opinion, other committers can have different opinions. I don't particularly think this topic is necessarily a non-starter. But I do think that given ambiguity we've observed in the benchmark, much more research is needed to push this topic forward. Links. 1. https://www.postgresql.org/message-id/741389.1606530957%40sss.pgh.pa.us ------ Regards, Alexander Korotkov
