As a postscript to these tests.. I just tried the 500GB Monentus XT hybrid SSD/HDD drive. I had this fantasy that it would at least do better than the 7200 rpm desktop drive.
Oh lord, my gut was wrong. The performance was inconsistent and never over 2/3rds the performance of the slowest desktop drive.
On Sat, Aug 7, 2010 at 4:47 PM, Michael March <mmarch@gmail.com> wrote:
If anyone is interested I just completed a series of benchmarks of stock Postgresql running on a normal HDD vs a SSD.
If you don't want to read the post, the summary is that SSDs are 5 to 7 times faster than a 7200RPM HDD drive under a pgbench load.