Re: write barrier question

On 8/18/10 12:24 PM, Samuel Gendler wrote:
> With barriers off, I saw a transaction rate of about 1200.  With
> barriers on, it was closer to 1050.  The test had a concurrency of 40
> in both cases.

I discovered there is roughly 10-20% "noise" in pgbench results after running the exact same test over a 24-hour period
ona machine with no other activity.  Be sure you run your tests enough times to get good statistics unless you're
lookingat much larger differences. 

Craig