Collecting object I/O level diagnostics
Steps to collect data on object I/O statistics using the DataStax Enterprise Performance Service.
- object_io
Per node recent latency metrics by keyspace and table.
- object_read_io_snapshot
Per node recent latency metrics, broken down by keyspace and table and orders data by mean read latency.
- object_write_io_snapshot
Per node recent latency metrics, broken down by keyspace and table and orders data mean write latency.
dse.yaml
The location of the dse.yaml file depends on the type of installation:
Package installations |
/etc/dse/dse.yaml |
Tarball installations |
installation_location/resources/dse/conf/dse.yaml |
Procedure
-
Edit the dse.yaml file.
-
In the dse.yaml file, set the enabled option for
resource_level_latency_tracking_options
to true.# Data Resource latency tracking settings resource_level_latency_tracking_options: enabled: true refresh_rate_ms: 10000
-
(Optional) To control how often the statistics are refreshed, increase or
decrease the
refresh_rate_ms
parameter.The
refresh_rate_ms
specifies the length of the sampling period, that is, the frequency with which this data is updated.