--- title: Search Service Metrics description: A list of the metrics provided by the Search Service. pubDate: 2026-08-17T09:53:44.266Z antora: editUrl: https://github.com/couchbase/docs-server/edit/release/7.6/modules/metrics-reference/pages/search-service-metrics.adoc xref: xref:7.6@server:metrics-reference:search-service-metrics.adoc[] --- [Consult the llms.txt file for a full list of contents](/llms.txt) [View original HTML](/server/7.6/metrics-reference/search-service-metrics.html) # Search Service Metrics > A list of the metrics provided by the Search Service. The following Search Service metrics can be queried by means of the REST APIs described in [Statistics](../rest-api/rest-statistics.md). > [!TIP] > * The x.y.z badge shows the Couchbase Server version the metric was added in. > * The type / unit badge shows shows the Prometheus [type](https://prometheus.io/docs/tutorials/understanding%5Fmetric%5Ftypes/) and [unit](https://prometheus.io/docs/practices/naming/#base-units) (if present). | fts\_avg\_grpc\_queries\_latency7.2.0gauge / milliseconds Average latency per query, using gRPC for streaming, for an index | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | fts\_avg\_internal\_queries\_latency7.2.0gauge / milliseconds Average latency of inter-node queries per unit time for an index | | fts\_avg\_queries\_latency7.2.0gauge / milliseconds Average latency of queries per unit time for an index | | fts\_batch\_bytes\_added7.2.0counter / bytes Total number of bytes from batches yet to be indexed. | | fts\_batch\_bytes\_removed7.2.0counter / bytes Total number of bytes from batches which have been indexed. | | fts\_boot\_timestamp\_seconds7.5.0gauge / seconds The time the service booted in fractional seconds since Unix epoch. | | fts\_counter\_cu\_total7.5.0counter / seconds The number of distinct operations recording Compute Units (CUs) with Regulator. | | fts\_counter\_ru\_total7.5.0counter / seconds The number of distinct operations recording Read Units (RUs) with Regulator. | | fts\_counter\_wu\_total7.5.0counter / seconds The number of distinct operations recording Write Units (WUs) with Regulator. | | fts\_credit\_cu\_total7.5.0counter / seconds The number of Compute Units (CUs) refunded. | | fts\_credit\_ru\_total7.5.0counter / seconds The number of Read Units (RUs) refunded. | | fts\_credit\_wu\_total7.5.0counter / seconds The number of Write Units (WUs) refunded. | | fts\_curr\_batches\_blocked\_by\_herder7.2.0gauge The difference between the number of batches that have been indexed and the number of batches yet to be indexed | | fts\_doc\_count7.2.0counter Number of documents in the index | | fts\_meter\_cu\_total7.5.0counter / seconds The number of Compute Units (CUs) recorded. | | fts\_meter\_ru\_total7.5.0counter / seconds The number of Read Units (RUs) recorded. | | fts\_meter\_wu\_total7.5.0counter / seconds The number of Write Units (WUs) recorded. | | fts\_num\_batches\_introduced7.2.0counter Total number of batches introduced as part of indexing. | | fts\_num\_bytes\_ram\_quota7.6.0gauge / bytes The number of bytes allocated by the cluster manager as maximum usable memory for fts service | | fts\_num\_bytes\_used\_disk7.2.0gauge / bytes The number of bytes used on disk by the index | | fts\_num\_bytes\_used\_disk\_by\_root7.2.0gauge / bytes The number of bytes used on disk by the root segment | | fts\_num\_bytes\_used\_ram7.2.0gauge / bytes The number of bytes used in memory | | fts\_num\_files\_on\_disk7.2.0gauge The number of files on disk for an index | | fts\_num\_knn\_search\_requests7.6.0counter Total number of search requests with KNN | | fts\_num\_mutations\_to\_index7.2.0gauge DCP sequence numbers yet to be indexed for an index | | fts\_num\_pindexes\_actual7.2.0gauge Total number of pindexes currently | | fts\_num\_pindexes\_target7.2.0gauge Planned/expected number of pindexes | | fts\_num\_recs\_to\_persist7.2.0gauge The number of entries (terms, records, dictionary rows, etc) by Bleve not yet persisted to storage | | fts\_num\_root\_filesegments7.2.0gauge The number of file segments in the root segment | | fts\_num\_root\_memorysegments7.2.0gauge The number of memory segments in the root segment | | fts\_op\_count\_total7.5.0counter / seconds The number of distinct operations recorded with Regulator. | | fts\_pct\_cpu\_gc7.2.0gauge / percent The percentage of CPU time spent by an index in garbage collection | | fts\_pct\_used\_ram7.6.0gauge / percent The percentage of RAM quota used by the fts service | | fts\_reject\_count\_total7.5.0counter / seconds The number of times Regulator instructed an operation to be rejected. | | fts\_throttle\_count\_total7.5.0counter / seconds The number of times Regulator instructed an operation to throttle. | | fts\_throttle\_seconds\_total7.5.0counter / seconds The total time spent throttling (in seconds). | | fts\_tot\_batches\_flushed\_on\_maxops7.2.0counter Total number of batches executed due to the batch size being greater than the maximum number of operations per batch | | fts\_tot\_batches\_flushed\_on\_timer7.2.0counter Total number of batches executed at regular intervals | | fts\_tot\_bleve\_dest\_closed7.2.0counter Total number of times Bleve destinations closed | | fts\_tot\_bleve\_dest\_opened7.2.0counter The number of times Bleve destinations opened | | fts\_tot\_grpc\_listeners\_closed7.2.0counter Total number of gRPC listeners closed | | fts\_tot\_grpc\_listeners\_opened7.2.0counter Total number of gRPC listeners opened | | fts\_tot\_grpc\_queryreject\_on\_memquota7.2.0counter Total number of gRPC queries rejected due to the memory quota being lesser than the estimated memory required for merging search results from all partitions from the query | | fts\_tot\_grpcs\_listeners\_closed7.2.0counter Total number of gRPC SSL listeners closed | | fts\_tot\_grpcs\_listeners\_opened7.2.0counter Total number of gRPC SSL listeners opened | | fts\_tot\_http\_limitlisteners\_closed7.2.0counter Total number of HTTP limit listeners closed | | fts\_tot\_http\_limitlisteners\_opened7.2.0counter Total number of HTTP limit listeners opened | | fts\_tot\_https\_limitlisteners\_closed7.2.0counter Total number of HTTPS limit listeners closed | | fts\_tot\_https\_limitlisteners\_opened7.2.0counter Total number of HTTPS limit listeners opened | | fts\_tot\_queryreject\_on\_memquota7.2.0counter Total number of queries rejected due to the memory quota being lesser than the estimated memory required for merging search results from all partitions from the query | | fts\_tot\_remote\_grpc7.2.0counter Total number of remote(i.e. different node) gRPC requests | | fts\_tot\_remote\_grpc\_ssl7.6.0counter Total number of remote(i.e. different node) gRPC SSL requests when adding clients. | | fts\_tot\_remote\_grpc\_tls7.2.0counter Total number of remote(i.e. different node) gRPC SSL requests when adding clients. | | fts\_tot\_remote\_http7.2.0counter Total number of remote(i.e. different node) HTTP requests | | fts\_tot\_remote\_http27.2.0counter Total number of remote(i.e. different node) HTTP SSL requests | | fts\_tot\_remote\_http\_ssl7.6.0counter Total number of remote(i.e. different node) HTTP SSL requests | | fts\_total\_bytes\_indexed7.2.0gauge Rate of bytes indexed for an index | | fts\_total\_bytes\_query\_results7.2.0counter / bytes Size of results coming back from full text queries for search results, including the entire size of the JSON sent | | fts\_total\_compaction\_written\_bytes7.2.0counter / bytes Number of bytes written to disk as a result of compaction | | fts\_total\_gc7.2.0counter The number of garbage collection events triggered | | fts\_total\_grpc\_internal\_queries7.2.0counter The number of internal gRPC requests from the co-ordinating node for the query to other nodes, for an index | | fts\_total\_grpc\_queries7.2.0counter The total number of queries, using gRPC for streaming, for an index | | fts\_total\_grpc\_queries\_error7.2.0counter The number of queries that resulted in an error, using gRPC for streaming, for an index | | fts\_total\_grpc\_queries\_slow7.2.0counter The number of queries in the slow query log, using gRPC for streaming, for an index | | fts\_total\_grpc\_queries\_timeout7.2.0counter The number of queries that exceeded the timeout, using gRPC for streaming, for an index | | fts\_total\_internal\_queries7.2.0counter The number of internal queries from the co-ordinating node to other nodes, per unit time for an index | | fts\_total\_knn\_searches7.6.0counter Total bleve knn search operations | | fts\_total\_queries7.2.0counter The number of full text queries per second for an index | | fts\_total\_queries\_bad\_request\_error7.6.0counter The number of FTS queries that resulted in an error due to a bad request | | fts\_total\_queries\_consistency\_error7.6.0counter The number of FTS queries that resulted in an error due to a failure to meet consistency requirements | | fts\_total\_queries\_error7.2.0counter The number of FTS queries for an index that resulted in an error | | fts\_total\_queries\_max\_result\_window\_exceeded\_error7.6.0counter The number of FTS queries that resulted in an error due to exceeding the maximum result window | | fts\_total\_queries\_partial\_results\_error7.6.0counter The number of FTS queries that resulted in an error due to only partial results being returned | | fts\_total\_queries\_rejected\_by\_herder7.2.0counter The number of queries rejected by the app herder when the memory used exceeds the application's query quota | | fts\_total\_queries\_search\_in\_context\_error7.6.0counter The number of FTS queries that resulted in an error while searching in context | | fts\_total\_queries\_slow7.2.0counter The number of FTS queries in the slow query log | | fts\_total\_queries\_timeout7.2.0counter The number of FTS queries for an index that exceeded the timeout | | fts\_total\_request\_time7.2.0counter / nanoseconds Total time spent processing query requests for an index | | fts\_total\_term\_searchers7.2.0counter Number of bleve term searchers | | fts\_total\_term\_searchers\_finished7.2.0counter Total term searchers that have finished serving a query | | fts\_total\_vectors7.6.1gauge The total number of vectors indexed | | total\_knn\_queries\_rejected\_by\_throttler7.6.4counter Total number of http query requests with KNN rejected by the throttler |