Collecting Apache Solr™ performance statistics

When solr_latency_snapshot_options is enabled, the performance service creates the required tables and schedules the job to periodically update the relevant snapshot from the specified data source.

The following snapshots collect performance statistics:

Query latency snapshot

Record phase-level cumulative percentile latency statistics for queries over time.

Update latency snapshot

Record phase-level cumulative percentile latency statistics for updates over time.

Commit latency snapshot

Record phase-level cumulative percentile latency statistics for commits over time.

Merge latency snapshot

Record phase-level cumulative percentile latency statistics for index merges over time.

All objects are disabled by default.

Where is the dse.yaml file?

The location of the dse.yaml file depends on the type of installation:

Installation Type Location

Package installations + Installer-Services installations

/etc/dse/dse.yaml

Tarball installations + Installer-No Services installations

<installation_location>/resources/dse/conf/dse.yaml

Procedure

  1. Edit the dse.yaml file.

  2. In the dse.yaml file, under the solr_latency_snapshot_options parameter, change enabled to true and set the other options as required.

    # Solr latency snapshot options
    solr_latency_snapshot_options:
        enabled: true
        ttl_seconds: 604800
        refresh_rate_ms: 60000

    All objects are disabled by default.

    Options
    Options Determines

    enabled

    Whether the object is enabled at start up.

    ttl_seconds

    How many seconds a record survives before it is expired from the performance object.

    refresh_rate_ms

    Period (in milliseconds) between sample recordings for periodically updating statistics like the solr_result_cache_stats.

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