How to handling large volumes of data on PostgreSQL?

概述mailing list: pgsql-admin.postgresql.org from: Johann Spies ..loaded about 4,900,000,000 in one of two tables with 7200684 in the second table in database ‘firewall’, built one index using one date-fi

mailing List: pgsql-admin.postgresql.org

from: Johann SpIEs

..loaded about 4,900,000,000 in one of two tables with 7200684 in the second table in database ‘firewall’,built one index using one date-fIEld (which took a few days) and used that index to copy about 3,800,000 of those records from the first to a third table,deleted those copIEd record from the first table and dropped the third table.
This took about a week on a 2xcpu quadcore server with 8Gb RAM..

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table paritioning is need.

distribute tables across different disks through tablespaces.Tweak the shared buffers and work_mem settings.

RAID5/6 are very,very slow when it comes to small disk *writes*.

At least a harDWare RAID controller with RAID 0 or 10 should be used,with 10krpm or 15krpm drives. SAS preferred.

as on SATA the only quick disks are Western Digital Raptor.

look at a vIEw called pg_stat_activity. Do: select * from pg_stat_activity;

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