From: | Andrew Sullivan <andrew(at)libertyrms(dot)info> |
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To: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Strange result: UNIX vs. TCP/IP sockets |
Date: | 2003-07-05 20:58:15 |
Message-ID: | 20030705205815.GA7713@libertyrms.info |
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Thread: | |
Lists: | pgsql-performance |
On Fri, Jul 04, 2003 at 05:47:27PM -0400, Tom Lane wrote:
> Andrew Sullivan <andrew(at)libertyrms(dot)info> writes:
> > How could it be the transport affects the time for the query as
> > reported by the back end?
>
> How much data is being sent back by the query?
In this case, it's an all-aggregate query:
select count(*), min(id) from sometable where owner = int4;
(Yeah, yeah, I know. I didn't write it.)
But it's the EXPLAIN ANALYSE that's reporting different times
depending on the transport. That's what I find so strange.
> Do you have SSL enabled? SSL encryption overhead is nontrivial,
> especially if any renegotiations happen.
No.
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