| From: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Christoph Berg <myon(at)debian(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Andrew Dunstan <andrew(at)dunslane(dot)net> |
| Subject: | Re: Non-empty default log_line_prefix |
| Date: | 2016-10-12 17:31:20 |
| Message-ID: | CAMkU=1zmOp5T70MX508nwFf8tvv2jOT+hGwLq8fNHLSxp-wVmQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Oct 12, 2016 at 10:11 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Jeff Janes <jeff(dot)janes(at)gmail(dot)com> writes:
> > On Sun, Oct 2, 2016 at 1:20 PM, Christoph Berg <myon(at)debian(dot)org> wrote:
> >> Patch attached. (Still using %t, I don't think %m makes sense for the
> >> default.)
>
> > What is the cost of using %m, other than 4 (rather compressible) bytes
> per
> > log entry?
>
> More log I/O, which is not free ... and that remark about compressibility
> is bogus for anyone who doesn't pipe their postmaster stderr into gzip.
> I'm already afraid that adding the timestamps will get us some pushback
> about log volume.
>
I don't pipe them into gzip, but every few months I go and pxz any of them
more than few months old.
Do you think the pushback will come from people who just accept the
defaults?
Cheers,
Jeff
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