Re: Naming-scheme for db-files - Mailing list pgsql-general

I didn't follow this thread, but I'm a little bit surprised !
txtdix itself is just a parsed data from corresponding column !
and txtidx stores only unique lexems, so size of txtidx column should
be lesser than original one ! I'd be interested to see more details
(if you could send me your data and sql script). Also,
did you use oid2name from contrib to see sizes of tables and indices ?
What is an output of 'select version()' ?
100,000 rows is not a big deal.

    regards,

        Oleg


On Thu, 29 Aug 2002, Markus Wollny wrote:

> Just a try on using txtidx for a speedy search over the e-mail-fields.
> No success, though - fti would have been better for the task (like
> finding all users who have got an aol.com-adress).
>
> > -----UrsprNngliche Nachricht-----
> > Von: Martijn van Oosterhout [mailto:kleptog@svana.org]
> > Gesendet: Donnerstag, 29. August 2002 01:18
> > An: Markus Wollny
> > Cc: pgsql-general@postgresql.org
> > Betreff: Re: [GENERAL] Naming-scheme for db-files
> >
> >
> > On Wed, Aug 28, 2002 at 11:25:44PM +0200, Markus Wollny wrote:
> > > After dropping the mentioned column emailindex of type txtidx (via
> > > copying the data to a temporary table and renaming this table
> > > afterwards), disk usage of that table evaporated from
> > 1862MB to a humble
> > > 61MB. And emailindex was completely empty... Very strange,
> > but ~60MB is
> > > very much more more like what I had estimated the size of
> > that table to
> > > be.
> >
> > What on earth is:
> >
> > emailindex txtidx,
> >
> > Anyway?
> >
> > >     -----UrsprУМngliche Nachricht-----
> > >     Von: Markus Wollny
> > >     Gesendet: Mi 28.08.2002 17:04
> > >     An: Martijn van Oosterhout
> > >     Cc: pgsql-general@postgresql.org
> > >     Betreff: Re: [GENERAL] Naming-scheme for db-files
> > >
> > >
> > >
> > >     Hi!
> > >
> > >     Yes, I run vacuum every night - and log-output indicates no
> > > errors at
> > >     all. Yet I am indeed quite puzzled about the size of this table.
> > > Is
> > >     there some way of finding out which column consumes so much
> > > space?
> > >
> > >     select count(*) from ct_com_user return 95858 rows.
> > >     The CREATE-statement for this table is as follows:
> > >
> > >     CREATE TABLE ct_com_user (
> > >       user_id numeric(10, 0),
> > >       login varchar(1000),
> > >       password varchar(1000),
> > >       status numeric(10, 0),
> > >       rights varchar(20) DEFAULT 'r',
> > >       firstname varchar(1000),
> > >       firstname_visible numeric(1, 0) DEFAULT 0,
> > >       lastname varchar(1000),
> > >       lastname_visible numeric(1, 0) DEFAULT 0,
> > >       clan varchar(1000),
> > >       clan_visible numeric(1, 0) DEFAULT 0,
> > >       street varchar(1000),
> > >       street_visible numeric(1, 0) DEFAULT 0,
> > >       zipcode varchar(1000),
> > >       zipcode_visible numeric(1, 0) DEFAULT 0,
> > >       city varchar(1000),
> > >       city_visible numeric(1, 0) DEFAULT 0,
> > >       country varchar(1000),
> > >       country_visible numeric(1, 0) DEFAULT 0,
> > >       phone1 varchar(1000),
> > >       phone1_visible numeric(1, 0) DEFAULT 0,
> > >       phone2 varchar(1000),
> > >       phone2_visible numeric(1, 0) DEFAULT 0,
> > >       mobile varchar(1000),
> > >       mobile_visible numeric(1, 0) DEFAULT 0,
> > >       fax varchar(1000),
> > >       fax_visible numeric(1, 0) DEFAULT 0,
> > >       email1 varchar(1000),
> > >       email1_visible numeric(1, 0) DEFAULT 0,
> > >       email2 varchar(1000),
> > >       email2_visible numeric(1, 0) DEFAULT 0,
> > >       icq varchar(1000),
> > >       icq_visible numeric(1, 0) DEFAULT 0,
> > >       homepage varchar(1000),
> > >       homepage_visible numeric(1, 0) DEFAULT 0,
> > >       description varchar(1000),
> > >       description_visible numeric(1, 0) DEFAULT 0,
> > >       hobbies varchar(1000),
> > >       hobbies_visible numeric(1, 0) DEFAULT 0,
> > >       signature1 varchar(4000),
> > >       signature2 varchar(4000),
> > >       signature3 varchar(4000),
> > >       forum_view varchar(20) DEFAULT 'flat',
> > >       temp_password varchar(100),
> > >       registered timestamptz,
> > >       last_login timestamptz,
> > >       created timestamptz DEFAULT ('now'::text)::timestamp(6) with
> > > time
> > >     zone,
> > >       lines numeric(3, 0) DEFAULT 400,
> > >       lines_forum numeric(3, 0) DEFAULT 20,
> > >       forum_lines numeric(3, 0) DEFAULT 20,
> > >       forum_smileys varchar(50) DEFAULT 'enhanced',
> > >       site_id numeric(10, 0) DEFAULT 0,
> > >       flag_id numeric(10, 0) DEFAULT 0,
> > >       forum_quoting varchar(50) DEFAULT 'enhanced',
> > >       forum_flatpostings numeric(3, 0) DEFAULT 10,
> > >       forum_images numeric(1, 0) DEFAULT 2,
> > >       user_image numeric(1, 0) DEFAULT 0,
> > >       user_image_visible numeric(1, 0) DEFAULT 0,
> > >       chat_password varchar(50),
> > >       chat_last_visit timestamptz,
> > >       authorpoints_visible numeric(1, 0) DEFAULT 0,
> > >       emailindex txtidx,
> > >       CONSTRAINT idx_pk_ct_com_user UNIQUE (user_id),
> > >       CONSTRAINT idx_u_ct_com_user_login UNIQUE (login)
> > >     ) WITH OIDS;
> > >
> > >     As hardly anyone actually uses a signature, hobby or
> > > description, I
> > >     cannot imagine how this should amount to almost 2 GB of data
> > > (1862MB) -
> > >     this would mean roughly 20k of data per row average - and no way
> > > have we
> > >     got this amount of data - the absolute maximum data per row as
> > > defined
> > >     would be about 30k, I guess, but that would mean that nearly all
> > > of our
> > >     users would use nearly all available space and I know that this
> > > is quite
> > >     far from true. I suspect it may have something to do with
> > > emailindex of
> > >     the txtidx-type... As it's not absolutely necessary, I'll try
> > > and drop
> > >     this column and see what I get...
> > >
> > >     Regards,
> > >
> > >             Markus
> > >
> > >     > -----UrsprУМngliche Nachricht-----
> > >     > Von: Martijn van Oosterhout [mailto:kleptog@svana.org]
> > >     > Gesendet: Mittwoch, 28. August 2002 16:30
> > >     > An: Markus Wollny
> > >     > Cc: pgsql-general@postgresql.org
> > >     > Betreff: Re: [GENERAL] Naming-scheme for db-files
> > >     >
> > >     >
> > >     > On Wed, Aug 28, 2002 at 03:54:45PM +0200, Markus Wollny wrote:
> > >     > > Hi!
> > >     > >
> > >     > > As I was just checking disk-usage of a database (PostgreSQL
> > >     > 7.2.1), I
> > >     > > stumbled over some files named with a trailing .1 added to
> > > the usual
> > >     > > oid. Now if a table 'example' with oid 12345 exists, what
> > >     > does the file
> > >     > > 12345.1 contain exactly? I didn't find anything about
> > >     > .1-files in the
> > >     > > documentation...
> > >     >
> > >     > Postgres splits files at 1GB. The .1 file would be the second
> > >     > part of the
> > >     > file. When that also reaches 1GB, you'll get a .2 file.
> > >     >
> > >     > You're doing VACUUM [FULL] regularly, right?
> > >     >
> > >     > --
> > >     > Martijn van Oosterhout   <kleptog@svana.org>
> > >     > http://svana.org/kleptog/
> > >     > > There are 10 kinds of people in the world, those that can do
> > > binary
> > >     > > arithmetic and those that can't.
> > >     >
> > >
> > >     ---------------------------(end of
> > > broadcast)---------------------------
> > >     TIP 2: you can get off all lists at once with the unregister
> > > command
> > >         (send "unregister YourEmailAddressHere" to
> > > majordomo@postgresql.org)
> > >
> > >
> > >
> > > ---------------------------(end of
> > broadcast)---------------------------
> > > TIP 1: subscribe and unsubscribe commands go to
> > majordomo@postgresql.org
> >
> > --
> > Martijn van Oosterhout   <kleptog@svana.org>
> > http://svana.org/kleptog/
> > > There are 10 kinds of people in the world, those that can do binary
> > > arithmetic and those that can't.
> >
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/users-lounge/docs/faq.html
>

    Regards,
        Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83