Re: Performance: Unix sockets vs. TCP/IP sockets
- From: Tom Lane <tgl@sss.pgh.pa.us>
- To: Frank Joerdens <frank@joerdens.de>
- Cc: pgsql-general@postgresql.org
- Subject: Re: Performance: Unix sockets vs. TCP/IP sockets
- Date: Thu, 25 Jan 2001 23:07:19 -0500
- Message-id: <28501.980482039@sss.pgh.pa.us>
Frank Joerdens <frank@joerdens.de> writes:
> What performance penalty can I expect when going over TCP/IP sockets
> instead of Unix sockets?
On a properly designed kernel, there shouldn't be any measurable
performance difference between a local TCP connection and a Unix-socket
connection.
There are not-so-well-designed kernels out there, but I forget which
they are (and you didn't bother to specify your platform anyway).
If you want a reliable answer, fire up a data-transfer-intensive task,
say a COPY OUT of a large table, and time it both ways.
regards, tom lane
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