On Sat, Jul 22, 2006 at 10:26:53AM -0700, Craig A. James wrote:
This causes massive file-system activity and flushes all files that the kernel has cached. If you run this between each Postgres test (let it run for a couple minutes), it gives you an apples-to-apples comparison between successive benchmarks, and eliminates the effects of caching.
Assuming a system with small ram or an unusually large system installation. Unmounting is a much more realiable mechanism.
Mike Stone
