On 11/13/2011 06:09 PM, Alexander Burbello wrote:
Hi folks,
My server has a daily routine to import a dump file, however its taking long
time to finish it.
The original db has around 200 MB and takes 3~4 minutes to export (there are
many blob fields), however it takes 4 hours to import using pg_restore.
What can I do to tune this database to speed up this restore??
My current db parameters are:
shared_buffers = 256MB
maintenance_work_mem = 32MB
Any suggestion is very welcome.
Thank you.
Alex
Are you doing this over a network?
If you watch it restore with vmstat (or top) are you IO bound? If so,
temporarily turn off fsync, restore the db, then turn it back on.
something like:
autovacuum = off
fsync = off
synchronous_commit = off
full_page_writes = off
bgwriter_lru_maxpages = 0
On the other hand, if you are cpu bound, use the multi-core-restore-option -j.
Or use both.
My current db parameters are:
shared_buffers = 256MB
maintenance_work_mem = 32MB
This is useless information without knowing anything about your computer. If
you have 512 Meg of ram its a lot different than if you have 32 Gig.
-Andy
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