This is the documentation for Cloudera Manager 5.1.x. Documentation for other versions is available at Cloudera Documentation.

Disk Metrics

Metric Name Description Unit CDH Version
average_queue_length The average queue length of the requests issued to the disk. This is the same as the 'avgqu-sz' measure from iostat. ios n/a
average_request_size The average size in sectors of the requests issued to the disk. This is the same as the 'avgrq-sz' measure from iostat. sectors n/a
await_read_time The average time for read requests issued to the disk to be served. This includes the time spent by the requests in queue and the time spent servicing them. This is the same as the 'r_await' measure from iostat. ms n/a
await_time The average time for requests issued to the disk to be served. This includes the time spent by the requests in queue and the time spent servicing them. This is the same as the 'await' measure from iostat. ms n/a
await_write_time The average time for write requests issued to the disk to be served. This includes the time spent by the requests in queue and the time spent servicing them. This is the same as the 'w_await' measure from iostat. ms n/a
read_bytes_rate Disk device bytes read bytes per second n/a
read_ios_rate Disk device number reads ios per second n/a
service_time The average service time for requests issued to the disk. This is the same as the 'svctm' measure from iostat. ms n/a
utilization The percentage of CPU time during which I/O requests were issued to the device. This is the same as the 'util' measure from iostat. percent n/a
write_bytes_rate Disk device bytes written bytes per second n/a
write_ios_rate Disk device number writes ios per second n/a
Page generated September 3, 2015.