Re: Query performance

From: "Lou O'Quin" <loquin(at)talleyds(dot)com>
To: <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Query performance
Date: 2005-03-11 19:38:16
Message-ID: s2319147.076@mesagate.talleyds.com
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Hi Tom. I referenced the status line of pgAdmin. Per the pgAdmin help file:

"The status line will show how long the last query took to complete. If a dataset was returned, not only the elapsed time for server execution is displayed, but also the time to retrieve the data from the server to the Data Output page."

Lou

>>> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> 3/11/2005 12:10 PM >>>

"Lou O'Quin" <loquin(at)talleyds(dot)com> writes:
> it appears to actually be hypersensitive to the transport delay. The =
> ratios of time for the data transport (assuming 1 for the local server) =
> are:
> 1 : 2.43 : 7.71

> whereas the query execution time ratios are:
> 1 : 2.08 : 25.5 (!!!)

How do you know that's what the data transport time is --- ie, how can
you measure that separately from the total query time?

regards, tom lane

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