[ofa-general] Obtaining RDMA statistics for an InfiniBand interface

[Eli Cohen]

On Tue, 2008-03-18 at 05:53 -0700, Hal Rosenstock wrote:
> > ==> /sys/class/infiniband/mthca0/ports/1/counters/port_xmit_packets <==
> > 4294967295
> 
> Depending on which fabric management (usually bundled with the SM) is
> being used, you may be able to obtain this information via the
> Performance Manager (and not be limited to 32 bit counters).
> 

Hal, can you explain the mechanism that can be used to get counter
values larger than 32 bits? I see that the IB spec defines the counters
as 32 bits.