Interpreting the output of cassandra-stress
About the period output from the running tests.
Each line reports data for the interval between the last elapsed time and current elapsed time, which is set by the --progress-interval option (default 10 seconds).
7251,725,725,56.1,95.1,191.8,10 19523,1227,1227,41.6,86.1,189.1,21 41348,2182,2182,22.5,75.7,176.0,31 ...
|total||Total number of operations since the start of the test.|
|interval_op_rate||Number of operations per second performed during the interval.|
|interval_key_rate||Number of keys/rows read or written per second during the interval (normally be the same as interval_op_rate unless doing range slices).|
|latency||Average latency in milliseconds for each operation during that interval.|
|95th||95% of the time the latency was less than the number displayed in the column (Cassandra 1.2 or later).|
|99th||99% of the time the latency was less than the number displayed in the column (Cassandra 1.2 or later).|
|elapsed||Number of seconds elapsed since the beginning of the test.|