[ Saturday, March 11, 2000 ] Gregory Leblanc wrote:
> I've got a dual proc SS20 that I'm using at my toy here. I'm running
> tiobench/tiotest on this machine to test out the raw performance of these
> disks, but I was sort of wondering what that (CPU%) number means on an SMP
> machine. Does it represent XX% of the total CPU cycles available are being
> used, or does it represent that XX% of the 1 CPU's cycles are being used?
> Seems to me that the threading would allow it to easily split onto multiple
> CPUs, but then what does the (CPU%) represent on the single threaded test?
the CPU % is in terms of a single CPU.
the below is on my home dual celery
[root@ns1 tiotest-0.25]# ./tiobench.pl --size 16
Size is MB, BlkSz is Bytes, Read and Write are MB/sec, Seeks are Seeks/sec
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
----- ------ ------- ---- ------------- -------------- --------------
. 16 4096 1 242.571 90.9% 6.00456 7.88% 53944.7 97.9%
. 16 4096 2 269.951 143.% 5.97565 8.21% 61718.8 138.%
. 16 4096 4 279.769 157.% 5.94349 8.04% 64585.5 156.%
. 16 4096 8 284.229 164.% 5.81558 7.81% 66145.7 165.%
James
