12-18-2018, 05:35 AM
I have already done some quick performance tuning, including specifying SMB protocols. After observing CPU usage gets 100% when performing sequential read/write, it seems I've reached limit as xalius mentioned. And yes, considering SSDs are converted via SATA-USB cable, sequential read/write speed is actually quite good, though 4k speeds are unproportionally slow (7MB/s is extremely slow) compared to sequential ones, and CPU usage does not get 100%.
Actually, performing random 4K benchmark with fio command on the SSD directly (of course connected to RockPro64 via SATA-USB cable) showed that it's capable of at lest 5500IOPS, namely 22MB/s for both read and write. I'll continue to find out whether I can have some improvement on this.
That said, the fact that you can get a NAS kit that is able to serve at over 300MB/s sequential speed well below 200USD (including 10GbE card price) is very impressive. It could serve near 10Gbps if the workload is highly optimized for multithreading, though what kind of workloads can get the most bandwidth out of the board remains to be seen.
In terms of network storage, if one need more sequential performance, it might be a time to consider buying Armada 8040 (Quad A72 and native SATA, 10GbE support) based boards or just grabbing a cheap x86 ITX boards and Pentium or something. But then the total system cost (excluding storage) suddenly got well over 300USD, and it just starts to feel no hobby anymore.
Actually, performing random 4K benchmark with fio command on the SSD directly (of course connected to RockPro64 via SATA-USB cable) showed that it's capable of at lest 5500IOPS, namely 22MB/s for both read and write. I'll continue to find out whether I can have some improvement on this.
That said, the fact that you can get a NAS kit that is able to serve at over 300MB/s sequential speed well below 200USD (including 10GbE card price) is very impressive. It could serve near 10Gbps if the workload is highly optimized for multithreading, though what kind of workloads can get the most bandwidth out of the board remains to be seen.
In terms of network storage, if one need more sequential performance, it might be a time to consider buying Armada 8040 (Quad A72 and native SATA, 10GbE support) based boards or just grabbing a cheap x86 ITX boards and Pentium or something. But then the total system cost (excluding storage) suddenly got well over 300USD, and it just starts to feel no hobby anymore.
