use DiskReadsPerSec/DiskWritesPerSec instead of DiskReadBytesPersec/DiskWriteBytesPersec
use DiskReadsPerSec/DiskWritesPerSec instead of DiskReadBytesPersec/DiskWriteBytesPersec

mackerelio/mackerel-agent,mackerelio/mackerel-agent,mackerelio/mackerel-agent