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TFGreen

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Performance of 8 port J9538A 10 GB cards in 5406 ZL switches

I would like to ask the experts here about some performance issues we are seeing -
 
We are running the 8 port J9538A 10 GB cards in our HP Procurve 5406ZL switches - we are not seeing anywhere near the 10 gb performance we think we should be seeing.
 

Switch Software is  K.15.06.0008 and some switches are connected directly to each other using HP 10 gig cables.

We are seeing the speed on the connected switches of (see below)

 
Rates (5 minute weighted average) :
Total Rx (Kbps) : 92,976             Total Tx (Kbps) : 83,488  

 
This is roughly only 93 megabytes per second - we are expecting much more than that.

 My thoughts are that 10 gpbs should yield a raw transfer of 1,250 Giga Bytes per sec

the configured port on a switch to switch connection interface showa

C6        SFP+DA7   | No        Yes     Up     10GigFD    NA   on   0
 
Wondering why we don't see the 10GB performance we were expecting.

 Please chime in

 And as always - Thanks in advance.
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LazyFolk
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How do you generate test traffic on the link to try to saturate it ?
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TFGreen

ASKER

That's a great question and thanks for asking it - In trying not to sound dumb at this point my answer would be that we have not done that yet.  We have a large network with a dozen or so san units and an active network.  I was (assuming) that all the traffic we have on our network would use up to the max  bandwith avail to us but we are seeing nothing close to the 10g speeds.  In the next week I will have a couple of 10g test servers that I can copy large amounts of data around between to test and saturate some of these links.
be aware that copying files will probably not saturate 10Gb link.
The limitation will be given by the disk read/write speed

In our network, copying large file from one server to my computer use around 50% of 1Gb link
And from server to server (using SAN storage) use around 75% of 1Gb

Attached screenshoots show our network switch load during a file copy.
(The top of bar graph is 100% of link speed (1 Gb in that case))
ServerToServer.png
ServerToComputer.PNG
Lots of tools allow to generate network traffic.

Some free tools as well (untested):

http://code.google.com/p/ostinato/

http://sourceforge.net/projects/traffic/
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ASKER

Thank you - I am thinking that a 10 gig link should be giving me 10 gig of performance - but in your example whild copying data on a 10 gig link you are seeing only 96 meg of performance.  Sort of what I am seeing - are my expectations of what I think I should be seeing not correct?
I dont really understand the question...

What do you think you should be seeing ? 10Gb ?
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ASKER

Yes - I think we should be seeing 10 gig of traffic on a 10 gig link - but I'm getting the drift of your questioning - thank you.
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LazyFolk
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