set-requesttracing-configuration

Configures the Request Tracing service.

Synopsis

asadmin [asadmin-options] set-requesttracing-configuration [--help]
[--enabled={false|true}]
[--dynamic={false|true}]
[--sampleRate] rate
[--adaptiveSamplingEnabled={false|true}]
[--adaptiveSamplingTargetCount] targetCount
[--adaptiveSamplingTimeValue] value
[--adaptiveSamplingTimeUnit] timeUnit
[--applicationsOnlyEnabled={false|true}]
[--thresholdValue] value
[--thresholdUnit] timeUnit
[--sampleRateFirstEnabled={false|true}]
[--traceStoreSize] size
[--traceStoreTimeout] timeout
[--reservoirSamplingEnabled={false|true}]
[--historicTraceStoreEnabled={false|true}]
[--historicTraceStoreSize] size
[--historicTraceStoreTimeout] timeout

Description

This command can be used to configure several aspects of the Request Tracing service.

Options

asadmin-options

Options for the asadmin utility. For information about these options, see the asadmin help page.

--help

-?

Displays the help text for the subcommand.

--enabled

Defaults to false. Enables or disables the Request Tracing service

--dynamic

Defaults to false. When set to true, applies the changes without a server restart.

Otherwise, a restart is required.

--sampleRate

The probability of a trace being sampled.

The rate must be a positive number between 0 and 1.0

--adaptiveSamplingEnabled

Defaults to false. Whether to use an adaptive sampling rate.

--adaptiveSamplingTargetCount

The target number of traces to sample per the configured time window.

Defaults to 6.

--adaptiveSamplingTimeValue

The period of time to attempt to hit the adaptive sample target count in.

Defaults to 1.

--adaptiveSamplingTimeUnit

The time unit for the adaptiveSampleTimeValue option.

Defaults to MINUTES.

--applicationsOnlyEnabled

Defaults to true. Whether to exclusively sample traces related to applications.

--thresholdValue

Sets the number of time units which trigger the tracing of a request.

Only used if adaptiveSamplingEnabled is set to false.

--thresholdUnit

Sets the time unit to use for the threshold.

Only used if adaptiveSamplingEnabled is set to false.

--sampleRateFirstEnabled

Defaults to true. Whether to perform the sampling check before or after the threshold calculation.

--traceStoreSize

Sets how many request traces will be stored.

Defaults to 20 trace records.

--traceStoreTimeout

Sets how long before Request Tracing messages are removed.

This field is specified in the format %d %h %m %s where % is an integer. Any of the units can also be omitted.

This option is ignored when reservoir sampling is enabled.

--reservoirSamplingEnabled

Defaults to false. Whether to use reservoir sampling, or time based sampling.

--historicTracestoreEnabled

Defaults to false. When present, enables storage of the slowest sampled historical request traces in a separate trace store.

--historicTracestoreSize

Sets how many request traces will be stored for historical purposes.

Defaults to 20 trace records.

--historicTracestoreTimeout

Sets how long before Request Tracing messages are removed from the historical trace store.

This field is specified in the format %d %h %m %s where % is an integer. Any of the units can also be omitted.

This option is ignored when reservoir sampling is enabled.

Examples

Example 1 Configure the Request Tracing Service Threshold and Historic Trace Storage

Enables the Request Tracing service with a 10 seconds threshold and to store the last 20 traces from 1 day, 2 hours and 3 minutes ago:

asadmin> set-requesttracing-configuration
    --enabled=true
    --thresholdValue=10
    --thresholdUnit="SECONDS"
    --dynamic=true
    --historicTraceStoreEnabled=true
    --historicTraceStoreSize=20
    --historicTraceStoreTimeout='1d 2h 3m 30s'

Exit Status

0: subcommand executed successfully
1: error in executing the subcommand

See Also