Re: On-disk size of db increased after restore

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От
Alvaro Herrera
Тема
Re: On-disk size of db increased after restore
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1283374138-sup-5802@alvh.no-ip.org
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On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore yj2133011 <274040551@qq.com>
Re: On-disk size of db increased after restore Richard Huxton <dev@archonet.com>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Richard Huxton <dev@archonet.com>
Re: On-disk size of db increased after restore Alvaro Herrera <alvherre@commandprompt.com>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Tom Lane <tgl@sss.pgh.pa.us>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Alvaro Herrera <alvherre@commandprompt.com>
Re: On-disk size of db increased after restore Tom Lane <tgl@sss.pgh.pa.us>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Tom Lane <tgl@sss.pgh.pa.us>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Tom Lane <tgl@sss.pgh.pa.us>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Tom Lane <tgl@sss.pgh.pa.us>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Scott Marlowe <scott.marlowe@gmail.com>
Re: On-disk size of db increased after restore Devrim GÜNDÜZ <devrim@gunduz.org>
Re: On-disk size of db increased after restore Thom Brown <thom@linux.com>
Excerpts from Richard Huxton's message of mié sep 01 16:39:55 -0400 2010:

> OK - so not fillfactor and not some unicode-related padding. I can't see 
> how a 32 vs 64-bit architecture change could produce anything like a 
> doubling of database size.

Depending on table schemas, why not?  e.g. consider a table with a
single bool column.  It will waste 7 bytes on 8-byte MAXALIGN machine
but only 3 on a 4-byte MAXALIGN machine.  Of course, this is a corner
case.  Devrim didn't specify the platform on each server AFAICS.

-- 
Álvaro Herrera 
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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