Re: Tom Lane 2016-09-29 <16946.1475157...@sss.pgh.pa.us> > Robert Haas <robertmh...@gmail.com> writes: > > As long as we get %t and %p in there we're going to be way ahead, really. > > Could we get consensus on just changing the default to > > log_line_prefix = '%t [%p] ' > > and leaving the rest out of it? I think pretty much everybody agrees > that those fields are useful, whereas the rest of it is a lot more > context-dependent. (For example, there are a whole lot of real > installations where neither %u nor %d would be worth the log space.)
Nod. In many installations %u and %d will be effectively constants.
> Personally I'm also on board with using this for regression testing:
>
> log_line_prefix = '%t [%p] %q%a '
>
> but I doubt it can be sold as a general-purpose default.
I don't think it makes much sense to log only %a unconditionally,
except maybe for making more applications actually set it.
If we were to add more fields I'd go for
log_line_prefix = '%t [%p] %q%u@%d/%a '
but the above-proposed '%t [%p] ' is already fixing 95% of the problem
(and the remaining 5% are unclear).
Possibly the longer version could be added as an example in the
documentation.
So, in short, +1.
Christoph
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