What sort of aggregates do you have behind your datastores? (aggr status -r or sysconfig -v) Is it, for instance, using only the internal sata disk? A minimum config was 10 drives iirc. That would easily limit your performance down where you describe.
Otherwise the common CPU culprits are: deduplication jobs, compression jobs, and inline compression. Then snap vault and snap mirror activity. Given that it's a branch office... How many replication jobs have you got running? These won't show up on your protocol ops / second however they will absolutely drag performance down with their I/O.
If not, what are you seeing with a sysstat -x 1 and a sysstat -m 1?
Have you filled the aggregates and or volumes up past 90%?
Do you have misaligned VMs?
That's where I'd start looking... Without specifics it's hard to point you at a cause, but your 2050 can deliver a lot more than the 1000 IOPS you see with a couple shelves... I believe that you max out with 1 loop of six shelves on that controller but it might have been 4 shelves.
Colin Bieberstein
On Sep 25, 2013, at 6:42 PM, "Andreev, Nikita" Nikita.Andreev@visionstream.com.au wrote:
Hi All,
We’re using FAS2050 in one of our branch offices to run VMware cluster over NFS. It turns out that this box runs on 100% CPU usage even when servicing 40MBs/1000IOPS (the max I’ve seen was 70MB/s). Which results in ridiculous latencies.
I do realise that it’s a Celeron CPU. I just want to double check with you guys, that it’s something you’d expect from this box. Because these days 40MB/s seems to be too little even as a CIFS file server for a small team in a branch office.
Regards, Nikita
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