Hi, On 2024-12-19 17:34:29 -0500, Tom Lane wrote: > Andres Freund <and...@anarazel.de> writes: > > My current thoughts around this are that we should generally, independent of > > io_uring, increase the FD limit ourselves. > > I'm seriously down on that, because it amounts to an assumption that > we own the machine and can appropriate all its resources. If ENFILE > weren't a thing, it'd be all right, but that is a thing. We have no > business trying to consume resources the DBA didn't tell us we could.
Arguably the configuration *did* tell us, by having a higher hard limit... I'm not saying that we should increase the limit without a bound or without a configuration option, btw. As I had mentioned, the problem with relying on increasing the soft limit that is that it's not generally sensible to do so, because it causes a bunch of binaries to do be weirdly slow. Another reason to not increase the soft rlimit is that doing so can break programs relying on select(). But opting into a higher rlimit, while obviously adhering to the hard limit and perhaps some other config knob, seems fine? Greetings, Andres Freund
