I've created a custom view in DFM that shows the various latency types on a controller. for some reason cifs_latency shows data but iscis_latency and fcp_latency do not show any data. In the same custom view I have another graph that shows throughput per protocal and it shows data for every protocal. So their should be a latency associated with these protocals as well.
Any Ideas? I'm sure if this is a bug or what I'm missing something.
Are your LUNs >= 2TB? If yes, you might be hitting Bug ID 444125 whereby some IOs are not captured correctly in the latency statistics. You could do a test by creating a smaller LUN (< 2TB), start some load, and while it is active check the latency counter from the controller CLI using "stats show fcp" (or "stats show iscsi"). If it starts working then you have a good idea you are hitting this Bug. I have also asked engineering to update the public report (it is blank at this moment) so you could also click the "WATCH THIS BUG" to get the updates when they are made.
Thanks Madden. But, no I don't have LUNs larger than 2TB. "stats show fcp" actaully shows data. (I didn't know about that command so that's nice to use.) It's only in Operations Manager where I don't see a graph for it.