"Curtis Faith" <curtis@galtcapital.com> writes:
>> "Stored in the index"? And how will you do that portably?
> Sorry for the lack of rigorous language. I meant that there would be one
> mutex per index stored in the header or internal data structures
> associated with each index somewhere. Probably in the same structure the
> root node reference for each btree is stored.
Hm. A single lock that must be grabbed for operations anywhere in the
index is a concurrency bottleneck. But maybe we could avoid that.
regards, tom lane
