Bruce Momjian <pgman@candle.pha.pa.us> writes:
> We added some PostgreSQL code to touch the socket file during
> checkpoints, and I thought that was in 7.1.
You're thinking about the socket lock file, which is a plain file.
The problem with socket files is that the file mod time usually doesn't
change even when it's in active use. That's why things like
/tmp-scrubbers need to make an exception for socket files.
regards, tom lane
