About lotus storage miner.

Hi guys, I tested the lotus storage miner on my machine with no luck. I started the lotus-storage-miner run process for a whole day, but still get “Byte power: 0B / 2.93 Pib (0.0000%)” after querying miner info. Then I checked the miner log but I did not see any apparent errors printed out except for a debug info which says “sched: not scheduling on worker 0; not enough physical memory - need: 257661M, have 257637M”. Could this be the reason making my miner not working properly? Please help .Thanks. Btw, I have 256G memory, still not enough? So weird.