Re: danger of stats_temp_directory = /dev/shm

Josh Berkus <josh@agliodbs.com> writes:
> Tom,
>> I note BTW that similar complaints could be lodged against the
>> log_directory setting.  We've not worried about that one too much.

> Actually, it does happen that when you change log_directory on a reload,
> stuff takes an uneven amount of time to "cut over"; that is, there's a
> few seconds while you're writing to both logs at once.  Materially,
> though, this isn't a serious operational issue (the logs are known to be
> asynchronous), so beyond confusing newbies, it's not something we'd want
> to fix.

Yeah, the stats temp directory will act pretty much the same way: there
will be an interval where backends might not get the most up-to-date data,
but it's not clear that it's worth the trouble to get it to be more nearly
synchronous.
        regards, tom lane