On Tue, Jul 14, 2020 at 6:51 PM Thomas Munro <thomas.mu...@gmail.com> wrote: > In the meantime, here's a rebase of the more straightforward patches > in the stack. These are the ones that deal only with fixed sets of > file descriptors, and they survive check-world on Linux, > Linux+EXEC_BACKEND (with ASLR disabled) and FreeBSD, and at least > check on macOS and Windows (my CI recipes need more work to get > check-world working on those two). There's one user-visible change > that I'd appreciate feedback on: I propose to drop the FATAL error > when the postmaster goes away, to make things more consistent. See > below for more on that.
Here's the effect of patches 0001-0003 on the number of relevant system calls generate by "make check" on Linux and FreeBSD, according to strace/truss -f -c: epoll_create1: 4,825 -> 865 epoll_ctl: 12,454 -> 2,721 epoll_wait: ~45k -> ~45k close: ~81k -> ~77k kqueue: 4,618 -> 866 kevent: ~54k -> ~46k close: ~65k -> ~61k I pushed those three patches, but will wait for more discussion on the rest.
