Hi Tom (or others),

are there some recommended settings/ways to use oprofile on a situation like 
this??? I got it working, have seen a first profile report, but then managed to 
completely freeze the server on a second try with different oprofile settings 
(next tests will go against the newly installed - next and identical - new 
servers). 

Andras Fabian

-----Ursprüngliche Nachricht-----
Von: Tom Lane [mailto:t...@sss.pgh.pa.us] 
Gesendet: Freitag, 9. Juli 2010 15:39
An: Andras Fabian
Cc: pgsql-general@postgresql.org
Betreff: Re: [GENERAL] PG_DUMP very slow because of STDOUT ?? 

Andras Fabian <fab...@atrada.net> writes:
> Now I ask, whats going on here ???? Why is COPY via STDOUT so much slower on 
> out new machine?

Something weird about the network stack on the new machine, maybe.
Have you compared the transfer speeds for Unix-socket and TCP connections?

On a Red Hat box I would try using oprofile to see where the bottleneck
is ... don't know if that's available for Ubuntu.

                        regards, tom lane

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