On 07/12/15 16:44, Simon Riggs wrote:
> There are many optimizations we might adopt, yet planning time is a factor.
> It seems simple enough to ignore more complex optimizations if we have
> already achieved a threshold cost (say 10). Such a test would add nearly
> zero time for the common case. We can apply the optimizations in some kind
> of ordering depending upon the cost, so we are careful to balance the
> cost/benefit of trying certain optimizations.
Given parallelism, why not continue planning after initiating a
a cancellable execution, giving a better plan to be used if the
excecution runs for long enough?
--
Cheers,
Jeremy