Real World Jumbo Frames Performance changes?

[mooseracing]

I'm trying to get a little more performance out of our system before I add a few more disks next year and I have tried enabling jumbo frames before without success.

Am I wasting my time or have you guys that went from it not enabled to enabled see a significant gain? What roles was your SAN providing?

Ours is just providing hosting for Hyper V Clusters, 1.5TB across 2 .imgs and 7.5GB RAM dedicated to each image.

Plan A - is enabling jumbo frames on the 2 cluster servers, enabling it on the 2 SAN boxes and enabling it on the Switch

Plan B - if A fails is to eliminate the switch from the picture (which I want to anyway) and direct connect the SAN's to the Cluster servers with 10Gb and Jumbo Frames enabled. Right now just the 2 SAN's are direct connected via 1Gb for HB, and 10Gb for Sync, then 10Gb to the switch for regular network traffic.

Or words from the wise that have Jumbo Frames working good.

[anton (staff)]

There's virtually no way to get wire speed w/o Jumbo frames. So if you have reasonable ping time and 100+ MB/sec w/o them you're extremely lucky. We can publish our multiple test bed results with and w/o Jumbo frames if you want but I'm not sure we can call it "production" so I'd wait for other guys to commit here