Tom,
BTW, as for your original question about performance, the current
external sort algorithm is mainly designed to conserve disk space,
not to be as fast as possible. It could probably be a good bit faster
if we didn't mind taking twice as much space (mainly because the
physical disk
PostgreSQL uses two different sorting algorithms, qsort and the external
sorting method in tuplesort.c. There are some possible improvements in
external sorting, so I'd like to check on the solidity of the testing
mechanisms.
Whether external sorting can be improved upon is a different debate,
Simon Riggs [EMAIL PROTECTED] writes:
Could anybody comment on whether the current tests appropriately cover
the correctness of the external sorting algorithms?
It's highly unlikely that the regression tests stress external sorts
much, or that anyone would hold still for making them run long
On Tue, 2005-04-12 at 10:04 -0400, Tom Lane wrote:
Simon Riggs [EMAIL PROTECTED] writes:
Could anybody comment on whether the current tests appropriately cover
the correctness of the external sorting algorithms?
It's highly unlikely that the regression tests stress external sorts
much, or
