Andres Freund <andres@xxxxxxxxxxx> writes: > On 2017-11-21 18:21:16 -0500, Tom Lane wrote: >> Justin Pryzby <pryzby@xxxxxxxxxxxxx> writes: >>> As $subject: backends are stuck in startup for minutes at a time. I didn't >>> strace this time, but I believe last time I saw one was waiting in a futex. > A futex? Hm, that was stock postgres? Sure, since we switched to unnamed-POSIX semaphores in v10. On Linux those are futexes. (If Justin saw that while still on 9.6, then it'd be worth looking closer.) regards, tom lane
