Tom,
> It's still true that I'm leery of a large increase in the number of
> buffers without reengineering slru.c. That code was written on the
> assumption that there were few enough buffers that a linear search
> would be fine. I'd hold still for 16, or maybe even 32, but I dunno
> how much impact that will have for such a test case.
Actually, 32 made a significant difference as I recall ... do you still have
the figures for that, Jignesh?
The test case is a workload called "iGen" which is a "fixed" TPCC-like
workload. I've been trying to talk Sun into open-sourcing it, but no dice so
far. It is heavy on writes, and (like TPCC) consists mostly of one-line
transactions.
--
Josh Berkus
PostgreSQL @ Sun
San Francisco