Hi, On 2021-04-12 15:56:08 -0700, Paul Friedman wrote: > Also, I didn't understand your comment about a 'futex profile', could you > point me in the right direction here? My earlier mail included a section about running a perf profile showing the callers of the futex() system call, which in turn is what lwlocks end up using on linux when the lock is contended. Check the second half of: https://www.postgresql.org/message-id/20210412215738.xytq33wlciljyva5%40alap3.anarazel.de Greetings, Andres Freund
