Re: 2.5.38-mm2 dbench $N times

Dave Hansen (dave@us.ibm.com)
Tue, 24 Sep 2002 18:08:59 -0700 (PDT)


On Tue, 24 Sep 2002, Andrew Morton wrote:

> William Lee Irwin III wrote:
> >
> > William Lee Irwin III wrote:
> > >> Taken on 32x/32G NUMA-Q:
> > >> Throughput 67.3949 MB/sec (NB=84.2436 MB/sec 673.949 MBit/sec) 16 procs
> > >> dbench 16 11.72s user 122.21s system 422% cpu 31.733 total
>
> dbench 16 on that sort of machine is a memory bandwidth test.
> And a dcache lock exerciser. It basically doesn't touch the
> disk. Something very bad is happening.
>
> Anton can get 3000 MByte/sec ;)

Bill's Machine cost around $50, plus the cost to repair the walls that I
crushed when hauling the pieces around. Anton's cost $2 million. Bill
wins :)

Are you trying to bind the processes anywhere? I wonder what would happen
if you make it always run quad 0...

-- 
Dave Hansen
haveblue@us.ibm.com

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/