Tom Lane wrote:
> No, it was a 2% hit on rather slow functions with only one call made
> per query issued by the client. This is not much of a stress test.
>
> A more impressive comparison would be
>
> select 2+2+2+2+2+2+ ... (iterate 10000 times or so)
>
> and see how much that slows down.
I ran a crude test as follows (using a PHP script on the same machine.
Nothing else going on at the same time):
do 100 times select 2+2+2+2+2+2+ ... iterated 9901 times
#define INDEX_MAX_KEYS 16, 32, 64, & 128
#define FUNC_MAX_ARGS INDEX_MAX_KEYS
make all
make install
initdb
The results were as follows:
INDEX_MAX_KEYS 16 32 64 128 -----+-------+------+--------
Time in seconds 48 49 51 55
Joe
