On Aug 29, 2006, at 1:47 AM, Bill Broadley wrote:
On Tue, Aug 15, 2006 at 09:02:12AM -0400, Lawrence Stewart wrote
AFAIK, the canonical latency benchmark is lat_mem_rd, which is
part of
the lmbench suite.
Really? Seems like more of a prefetch test then a latency benchmark.
A fixed stride
On Mon, 28 Aug 2006, Bill Broadley wrote:
latency is much harder to get at. lat_mem_rd tries fairly hard to
defeat hardware
prefetch units by threading a chain of pointers through a random set
of cache
blocks. Other tests that don't do this get screwy results.
A random set of cache blocks?
On Tue, Aug 15, 2006 at 09:02:12AM -0400, Lawrence Stewart wrote:
> As has been mentioned here, the canonical bandwidth benchmark is
> streams.
Agreed.
> AFAIK, the canonical latency benchmark is lat_mem_rd, which is part of
> the lmbench suite.
Really? Seems like more of a prefetch test then a
As has been mentioned here, the canonical bandwidth benchmark is
streams.
AFAIK, the canonical latency benchmark is lat_mem_rd, which is part of
the lmbench suite.
Streams is ultimately a test of the bandwidth path between the drams
and the core
in that if you turn up the buffer size sufficie
