On 05/31/2016 11:17 AM, Peter Eisentraut wrote:
> On 5/31/16 2:02 PM, Josh berkus wrote:
>> I get where you're coming from, but I think Haas's query plan output is
>> going to show us the confusion we're going to get. So we need to either
>> change the parameter, the explain output, or brace ourselves for endless
>> repeated questions.
> Changing the explain output doesn't sound so bad to me.
> The users' problem is that the parameter setting ought to match the
> EXPLAIN output.
> The developers' problem is that the EXPLAIN output actually corresponds
> to leader + (N-1) workers internally.
> I think we can hope that developers are going to be less confused about
> that than users.
One more consistency question: what's the effect of running out of
That is, say max_parallel_workers is set to 10, and 8 are already
allocated. If I ask for max_parallel_X = 4, how many cores to I use?
Presumably the leader isn't counted towards max_parallel_workers?
Red Hat OSAS
(any opinions are my own)
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