May 7, 201214 yr Hi there, I would need some help finding the bottleneck in my setup. Here are the facts: I have a GBit LAN. ping to the server is < 1 ms. hdparm -tT gives 94 MB/s for my cache drive and 77 MB/s for the other drives. writing large files (e.g. 4GB) to unRAID gives 16-18 MB/s. reading is also 16-18 MB/s. I checked the CPU load with top during write/read and it does not exceed 20%. From what I see the bottleneck is neither the disks, nor the CPU. It could be my brand new Gigabit switch, but I am not sure how to test it. And I bought it because other ppl reported high throughput with this device. I know unRAID is not meant to be high throughput, but 16-18 MB/s is not really sufficient for videostreaming and I see ppl report a lot more. I checked the performance tweaking guide in the Wiki, but I think the relevant stuff is good in my setup. This is not about squeezing out a few MB. Any hints are appreciated.
May 7, 201214 yr Well. You posted nothing about your hardware specs and no syslogs, we might have to be psychic (although my GF would say I'm psychotic) to give you the answer that might solve your issue. For example.. if you are running on a P3 with an array of old 40GB IDE drives on PCI controllers, that would be pretty fast for that server.... Help us to help you?
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