Dheeraj Pandey wrote:
>
> ...
> > * with IP over FC :
> > I have around 21 MB/s performance using a big file (600 MB)
> > transfer by
> > FTP
> >
> > * with IP on Gigabit Ethernet :
> > I have around 33 MB/s with the same test using similar
> > conditions (same
> > file, same directory to store it).
>
> Let us identify the bottleneck first. Is it the CPU0? Try observing "mpstat
> -P ALL" and see which one of the CPU's is loaded, if at all.
>
> Its important we identify what resource saturates in the IP-over-FC case,
> which doesn't in the other.
Yes, you're right.
I should have give more informations about CPU utilization...
There is not really a CPU bottleneck I think.
I didn't use mpstat tool for that, but just top (thanks for your
information, I must admin I didn't know the mpstat tool...).
So, here are the results with IP over FC :
19:11:39 CPU %user %nice %system %idle intr/s
19:11:40 all 0.00 0.00 12.50 87.50 8033.00
19:11:40 0 0.00 0.00 4.00 96.00 8033.00
19:11:40 1 0.00 0.00 21.00 79.00 8033.00
And with Gigabit ethernet :
19:14:49 CPU %user %nice %system %idle intr/s
19:14:50 all 0.00 0.00 26.00 74.00 14432.00
19:14:50 0 0.00 0.00 40.00 60.00 14432.00
19:14:50 1 0.00 0.00 12.00 88.00 14432.00
Thanks in advance for your help !
--
Fabien SALVI Centre de Ressources Informatiques
Archamps, France -- http://www.cri74.org
PingOO GNU/linux distribution : http://www.pingoo.org
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