From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
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To: | dg(at)illustra(dot)com (David Gould) |
Cc: | hackers(at)postgreSQL(dot)org |
Subject: | Re: [HACKERS] Sequential scan speed, mmap, disk i/o |
Date: | 1998-05-14 14:54:09 |
Message-ID: | 199805141454.KAA09189@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-hackers |
> Very interesting. Is it possible to get the schema, the query, and a
> a sample of the data or a generator program for the data? I am quite surprised
> to see us do so well, I would have guess that the per row overhead would
> have us down far below wc.
Sure.
create table test (x1 int, x2 int, x3 char(10), x4 varchar(50));
insert into test values (3, 8, 'asdf','asdf');
insert into test select * from test; <- continue until test is large
select * from test where x1 = 23423; <- this is what I timed
--
Bruce Momjian | 830 Blythe Avenue
maillist(at)candle(dot)pha(dot)pa(dot)us | Drexel Hill, Pennsylvania 19026
+ If your life is a hard drive, | (610) 353-9879(w)
+ Christ can be your backup. | (610) 853-3000(h)
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