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Allow parallel copy/link in pg_upgrade

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This patch implements parallel copying/linking of files by tablespace
using the --jobs option in pg_upgrade.
This commit is contained in:
Bruce Momjian
2013-01-09 08:57:47 -05:00
parent c00dc337b8
commit a89c46f9bc
8 changed files with 256 additions and 73 deletions
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9
doc/src/sgml/pgupgrade.sgml
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@ -342,10 +342,11 @@ NET STOP pgsql-8.3 (<productname>PostgreSQL</> 8.3 and older used a different s
<para>
The <option>--jobs</> option allows multiple CPU cores to be used
to dump and reload database schemas in parallel; a good place to
start is the number of CPU cores on the server. This option can
dramatically reduce the time to upgrade a multi-database server
running on a multiprocessor machine.
for copying/linking of files and to dump and reload database schemas
in parallel; a good place to start is the maximum of the number of
CPU cores and tablespaces. This option can dramatically reduce the
time to upgrade a multi-database server running on a multiprocessor
machine.
</para>
<para>