Greg Spiegelberg wrote:
> Speaking of the layers in-between, has this test been done with the
> ext3 journal on a different device? Maybe the purpose is wrong for
> the SSD. Use the SSD for the ext3 journal and the spindled drives for
> filesystem?
The main disk bottleneck on PostgreSQL databases are the random seeks
for reading and writing to the main data blocks. The journal
information is practically noise in comparison--it barely matters
because it's so much less difficult to keep up with. This is why I
don't really find ext2 interesting either.
--
Greg Smith 2ndQuadrant US Baltimore, MD
PostgreSQL Training, Services and Support
greg@2ndQuadrant.com www.2ndQuadrant.us
