Re: Increasing the length of pg_stat_activity.current_query... - Mailing list pgsql-hackers

Tom Lane wrote:
> It's really a
> performance issue: do you want to pay the penalty associated with
> reassembling messages that exceed the loopback MTU [...]

BTW, the loopback MTU here is quite large:

oliver@flood:~$ /sbin/ifconfig lo | grep MTU          UP LOOPBACK RUNNING  MTU:16436  Metric:1
oliver@flood:~$ uname -a
Linux flood 2.6.8.1-flood #1 Wed Sep 29 21:58:09 NZST 2004 i686 GNU/Linux

so at least on Linux 2.6 it seems like the risk of fragmentation is minimal.

-O