[franga2000]

Would be interesting to see if Optane or even just some faster SSDs for the metadata would give any noticeable improvement. I imagine latency would be more important for metadata than throughput, so perhaps SSDs would be more or less equivalent, but I'd be really interested in seeing the numbers for Optane

[buildbot]

This is actually one of the golden use cases for optane! Back in the pre-optane day, the server company I worked for would back SSD/HDD zpools with a device called a ZeusRAM drive: https://www.ebay.com/itm/234256677232

It's all about the latency.