How do I get statistics for our HBAs?

We are using PowerPath 5.5 on 64-bit RHEL 5.6 (kernel 2.6.18-238.5.1.el5) with QLogic 2460 HBAs.

Using:

powermt display

only reports:

Symmetrix logical device count=0

CLARiiON logical device count=2

Hitachi logical device count=0

HP xp logical device count=0

Ess logical device count=0

Invista logical device count=0

==============================================================================

----- Host Bus Adapters ---------  ------ I/O Paths -----  ------ Stats ------

###  HW Path                       Summary   Total   Dead  IO/Sec Q-IOs Errors

==============================================================================

   1 qla2xxx                       optimal       4      0       -     0      0

   2 qla2xxx                       optimal       4      0       -     0      0

Why are the Stats not accounted for?

Is there any method by which I can get throughput and latency for the HBAs?

TIA