ZenFS is a file system plugin that utilizes RocksDB's FileSystem interface to place files into zones on a raw zoned block device.
To setup ZenFS on a NVMe ZNS device, follow the instructions here.
db_bench performance testing can be done by following the instructions
The performance results in section 5.2 of the paper ZNS: Avoiding the Block Interface Tax for Flash-based SSDs can be replicated by using the ZBDBench benchmark collection.
The following command will replicate the performance tests shown in the paper.
# python3 ./run.py -d /dev/nvmeXnX -b zns_atc_paper_eval
The results hown in section 5.2 of the paper were obtained using a 2TB NVMe ZNS device. ZNS devices with different capacities have different maximum performance.