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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