Hi all, Last week, we released direct_cp that is archiving WAL command without waste file caches. In general, archiving WAL copy cause less performance, because it creates a lot of not re-accessed OS file caches. To use direct_cp, OS file caches are more efficiently used in PostgreSQL. It can easy to use that replace cp command with direct_cp at archive command in postgresql.conf.
* Install package is under following. http://sourceforge.net/projects/directcp/files/?source=navbar * Performance test in archive mode is under following. http://directcp.sourceforge.net/files/performance.pdf direct_cp can realize better performance than normal cp command. * Online manual is under following. http://directcp.sourceforge.net/direct_cp.html<http://directcp.sourceforge.net/direct_cp-ja.html> This software is BSD License. Please apply it to your postgres with archiving mode. Regards, -- Mitsumasa KONDO NTT Open Source Software Center
