| From: | Thomas Kellerer <spam_eater(at)gmx(dot)net> |
|---|---|
| To: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: SELECT very slow |
| Date: | 2005-06-15 18:05:28 |
| Message-ID: | d8pqbi$a5q$1@sea.gmane.org |
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| Thread: | |
| Lists: | pgsql-sql |
PFC wrote on 14.06.2005 14:26:
[...]
> Now I fire up python, do a SELECT * from the table and retrieve all
> the data as native objects... Hm, it takes about 1.3 seconds... on my
> Pentium-M 1600 laptop...
>
> Don't you have a problem somewhere ? Are you sure it's not swapping
> ? did you check memory ? Are you transferring all this data over the
> network ? Might an obscure cabling problem have reverted your
> connection to 10 Mbps ?
I'm sure. Everything is running on the same machine, about 350 MB free memory.
> Ouch. I saw you're on Windows so I tried it on the windows machine
> there which has a postgres installed, over a 100Mbps network, querying
> from my linux laptop. The windows machine is a piece of crap,
> Pentium-II 300 and 256 MB Ram, it takes 7 seconds to retrieve the whole
> table in a python native object.
>
It's not the program or Java. The same program takes about 20 seconds with
Firebird and the exactly same data.
Thomas
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