Re: syslog performance when logging big statements

On Jul 8, 2008, at 8:24 AM, Achilleas Mantzios wrote:

> File sizes of about 3M result in actual logging output of ~ 10Mb.
> In this case, the INSERT *needs* 20 minutes to return. This is
> because the logging through syslog seems to severely slow the system.
> If instead, i use stderr, even with logging_collector=on, the same
> statement needs 15 seconds to return.
>

In syslog.conf is the destination for PG marked with a "-"? (ie -/var/
log/pg.log) which tells syslog to not sync after each line logged.
That could explain a large chunk of the difference in time.

--
Jeff Trout <jeff@jefftrout.com>
http://www.stuarthamm.net/
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