This is on dual ultra 2 sparc. with ultrawide 320 scsi drives. 512MB ram. I had to drop size of DB, because the DB drive is 4GB (I do welecome bigger drives as donation, if someone asks - UWscsi 320).

here are my results. With only 4.2 patch (no maintain cluster order v5 patch). If the v5 patch was needed, please tell me - I am going rerun it with.


hope it is usefull.

Repeat 3 times to ensure repeatable results.
Timing is on.
select_with_normal_index
--------------------------
                   100000
(1 row)

Time: 1727891.334 ms
select_with_normal_index
--------------------------
                   100000
(1 row)

Time: 1325561.252 ms
select_with_normal_index
--------------------------
                   100000
(1 row)

Time: 1348530.100 ms
Timing is off.
And now run the same tests with clustered index
Timing is on.
select_with_clustered_index
-----------------------------
                      100000
(1 row)

Time: 870246.856 ms
select_with_clustered_index
-----------------------------
                      100000
(1 row)

Time: 477089.456 ms
select_with_clustered_index
-----------------------------
                      100000
(1 row)

Time: 381880.965 ms
Timing is off.




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TIP 9: In versions below 8.0, the planner will ignore your desire to
      choose an index scan if your joining column's datatypes do not
      match

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