csuresh2 on "Cluster performance metrics"

Hi,

http://www.datastax.com/docs/opscenter/online_help/performance/cluster_metrics#write-request-latency

In the above link write/read request latency is said to be measured in microseconds. And in the graphs I see the unit of milliseconds (ms/op). I would also like to point out OS disk latency shown in milliseconds also report it in ms. I believe there is an inconsistency in reporting the units or there is a mistake in documentation.

Would any please clarify the measurement unit of write (or read) request latency?

Thanks,
Chethan