--- title: Search Service Metrics description: A list of the metrics provided by the Search Service. pubDate: 2026-08-18T04:50:45.818Z antora: editUrl: https://github.com/couchbase/docs-capella/edit/main/modules/metrics-reference/pages/search-service-metrics.adoc xref: xref:cloud:metrics-reference:search-service-metrics.adoc[] --- [Consult the llms.txt file for a full list of contents](/llms.txt) [View original HTML](/cloud/metrics-reference/search-service-metrics.html) # Search Service Metrics > A list of the metrics provided by the Search Service. > [!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_latency` 7.2.0 gauge / milliseconds Average latency per query, using gRPC for streaming, for an index `fts_avg_internal_queries_latency` 7.2.0 gauge / milliseconds Average latency of inter-node queries per unit time for an index `fts_avg_queries_latency` 7.2.0 gauge / milliseconds Average latency of queries per unit time for an index `fts_batch_bytes_added` 7.2.0 counter / bytes Total number of bytes from batches yet to be indexed. `fts_batch_bytes_removed` 7.2.0 counter / bytes Total number of bytes from batches which have been indexed. `fts_boot_timestamp_seconds` 7.5.0 gauge / seconds The time the service booted in fractional seconds since Unix epoch. `fts_counter_cu_total` 7.5.0 counter / seconds The number of distinct operations recording Compute Units (CUs) with Regulator. `fts_counter_ru_total` 7.5.0 counter / seconds The number of distinct operations recording Read Units (RUs) with Regulator. `fts_counter_wu_total` 7.5.0 counter / seconds The number of distinct operations recording Write Units (WUs) with Regulator. `fts_credit_cu_total` 7.5.0 counter / seconds The number of Compute Units (CUs) refunded. `fts_credit_ru_total` 7.5.0 counter / seconds The number of Read Units (RUs) refunded. `fts_credit_wu_total` 7.5.0 counter / seconds The number of Write Units (WUs) refunded. `fts_curr_batches_blocked_by_herder` 7.2.0 gauge The difference between the number of batches that have been indexed and the number of batches yet to be indexed `fts_doc_count` 7.2.0 counter Number of documents in the index `fts_global_query_timer_count` 8.0.0 counter The number of query timer events received at the global query endpoint `fts_global_query_timer_mean_ns` 8.0.0 gauge Mean runtime for queries received at the global query endpoint `fts_global_query_timer_median_ns` 8.0.0 gauge Median runtime for queries received at the global query endpoint `fts_global_query_timer_p80_ns` 8.0.0 gauge 80th percentile runtime for queries received at the global query endpoint `fts_global_query_timer_p99_ns` 8.0.0 gauge 99th percentile runtime for queries received at the global query endpoint `fts_grpc_query_timer_count` 8.0.0 counter The number of query timer events received at the gRPC endpoint `fts_grpc_query_timer_mean_ns` 8.0.0 gauge Mean runtime for queries received at the gRPC endpoint `fts_grpc_query_timer_median_ns` 8.0.0 gauge Median runtime for queries received at the gRPC endpoint `fts_grpc_query_timer_p80_ns` 8.0.0 gauge 80th percentile runtime for queries received at the gRPC endpoint `fts_grpc_query_timer_p99_ns` 8.0.0 gauge 99th percentile runtime for queries received at the gRPC endpoint `fts_meter_cu_total` 7.5.0 counter / seconds The number of Compute Units (CUs) recorded. `fts_meter_ru_total` 7.5.0 counter / seconds The number of Read Units (RUs) recorded. `fts_meter_wu_total` 7.5.0 counter / seconds The number of Write Units (WUs) recorded. `fts_num_batches_introduced` 7.2.0 counter Total number of batches introduced as part of indexing. `fts_num_bytes_ram_quota` 7.6.0 gauge / bytes The number of bytes allocated by the cluster manager as maximum usable memory for fts service `fts_num_bytes_used_disk` 7.2.0 gauge / bytes The number of bytes used on disk by the index `fts_num_bytes_used_disk_by_root` 7.2.0 gauge / bytes The number of bytes used on disk by the root segment `fts_num_bytes_used_ram` 7.2.0 gauge / bytes The number of bytes used in memory `fts_num_files_on_disk` 7.2.0 gauge The number of files on disk for an index `fts_num_indexes` 8.0.0 gauge Number of search indexes in the cluster `fts_num_knn_search_requests` 7.6.0 counter Total number of search requests with KNN `fts_num_mutations_to_index` 7.2.0 gauge DCP sequence numbers yet to be indexed for an index `fts_num_pindexes_actual` 7.2.0 gauge Total number of pindexes currently `fts_num_pindexes_target` 7.2.0 gauge Planned/expected number of pindexes `fts_num_recs_to_persist` 7.2.0 gauge The number of entries (terms, records, dictionary rows, etc) by Bleve not yet persisted to storage `fts_num_root_filesegments` 7.2.0 gauge The number of file segments in the root segment `fts_num_root_memorysegments` 7.2.0 gauge The number of memory segments in the root segment `fts_num_vector_indexes` 8.0.0 gauge Number of search indexes in the cluster that have vector/vector\_base64 fields `fts_op_count_total` 7.5.0 counter / seconds The number of distinct operations recorded with Regulator. `fts_pct_cpu_gc` 7.2.0 gauge / percent The percentage of CPU time spent by an index in garbage collection `fts_pct_used_ram` 7.6.0 gauge / percent The percentage of RAM quota used by the fts service `fts_reject_count_total` 7.5.0 counter / seconds The number of times Regulator instructed an operation to be rejected. `fts_scoped_query_timer_count` 8.0.0 counter The number of query timer events received at the scoped query endpoint `fts_scoped_query_timer_mean_ns` 8.0.0 gauge Mean runtime for queries received at the scoped query endpoint `fts_scoped_query_timer_median_ns` 8.0.0 gauge Median runtime for queries received at the scoped query endpoint `fts_scoped_query_timer_p80_ns` 8.0.0 gauge 80th percentile runtime for queries received at the scoped query endpoint `fts_scoped_query_timer_p99_ns` 8.0.0 gauge 99th percentile runtime for queries received at the scoped query endpoint `fts_throttle_count_total` 7.5.0 counter / seconds The number of times Regulator instructed an operation to throttle. `fts_throttle_seconds_total` 7.5.0 counter / seconds The total time spent throttling (in seconds). `fts_tot_batches_flushed_on_maxops` 7.2.0 counter 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_timer` 7.2.0 counter Total number of batches executed at regular intervals `fts_tot_bleve_dest_closed` 7.2.0 counter Total number of times Bleve destinations closed `fts_tot_bleve_dest_opened` 7.2.0 counter The number of times Bleve destinations opened `fts_tot_grpc_listeners_closed` 7.2.0 counter Total number of gRPC listeners closed `fts_tot_grpc_listeners_opened` 7.2.0 counter Total number of gRPC listeners opened `fts_tot_grpc_queryreject_on_memquota` 7.2.0 counter 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_closed` 7.2.0 counter Total number of gRPC SSL listeners closed `fts_tot_grpcs_listeners_opened` 7.2.0 counter Total number of gRPC SSL listeners opened `fts_tot_http_limitlisteners_closed` 7.2.0 counter Total number of HTTP limit listeners closed `fts_tot_http_limitlisteners_opened` 7.2.0 counter Total number of HTTP limit listeners opened `fts_tot_https_limitlisteners_closed` 7.2.0 counter Total number of HTTPS limit listeners closed `fts_tot_https_limitlisteners_opened` 7.2.0 counter Total number of HTTPS limit listeners opened `fts_tot_queryreject_on_memquota` 7.2.0 counter 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_grpc` 7.2.0 counter Total number of remote(i.e. different node) gRPC requests `fts_tot_remote_grpc_ssl` 7.6.0 counter Total number of remote(i.e. different node) gRPC SSL requests when adding clients. `fts_tot_remote_grpc_tls` 7.2.0 counter Total number of remote(i.e. different node) gRPC SSL requests when adding clients. `fts_tot_remote_http` 7.2.0 counter Total number of remote(i.e. different node) HTTP requests `fts_tot_remote_http2` 7.2.0 counter Total number of remote(i.e. different node) HTTP SSL requests `fts_tot_remote_http_ssl` 7.6.0 counter Total number of remote(i.e. different node) HTTP SSL requests `fts_total_bytes_indexed` 7.2.0 gauge Rate of bytes indexed for an index `fts_total_bytes_query_results` 7.2.0 counter / 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_bytes` 7.2.0 counter / bytes Number of bytes written to disk as a result of compaction `fts_total_gc` 7.2.0 counter The number of garbage collection events triggered `fts_total_grpc_internal_queries` 7.2.0 counter The number of internal gRPC requests from the co-ordinating node for the query to other nodes, for an index `fts_total_grpc_queries` 7.2.0 counter The total number of queries, using gRPC for streaming, for an index `fts_total_grpc_queries_error` 7.2.0 counter The number of queries that resulted in an error, using gRPC for streaming, for an index `fts_total_grpc_queries_slow` 7.2.0 counter The number of queries in the slow query log, using gRPC for streaming, for an index `fts_total_grpc_queries_timeout` 7.2.0 counter The number of queries that exceeded the timeout, using gRPC for streaming, for an index `fts_total_internal_queries` 7.2.0 counter The number of internal queries from the co-ordinating node to other nodes, per unit time for an index `fts_total_knn_searches` 7.6.0 counter Total bleve knn search operations `fts_total_mutations_filtered` 8.0.0 counter Total number of mutations that qualify for any document filter in an index (in-memory only stat) `fts_total_queries` 7.2.0 counter The number of full text queries per second for an index `fts_total_queries_bad_request_error` 7.6.0 counter The number of FTS queries that resulted in an error due to a bad request `fts_total_queries_consistency_error` 7.6.0 counter The number of FTS queries that resulted in an error due to a failure to meet consistency requirements `fts_total_queries_error` 7.2.0 counter The number of FTS queries for an index that resulted in an error `fts_total_queries_max_result_window_exceeded_error` 7.6.0 counter The number of FTS queries that resulted in an error due to exceeding the maximum result window `fts_total_queries_partial_results_error` 7.6.0 counter The number of FTS queries that resulted in an error due to only partial results being returned `fts_total_queries_rejected_by_herder` 7.2.0 counter 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_error` 7.6.0 counter The number of FTS queries that resulted in an error while searching in context `fts_total_queries_slow` 7.2.0 counter The number of FTS queries in the slow query log `fts_total_queries_timeout` 7.2.0 counter The number of FTS queries for an index that exceeded the timeout `fts_total_queries_to_actives` 8.0.0 counter Total number of searches served by the active partitions of an index on a node `fts_total_queries_to_replicas` 8.0.0 counter Total number of searches served by the replica partitions of an index on a node `fts_total_request_time` 7.2.0 counter / nanoseconds Total time spent processing query requests for an index `fts_total_synonym_searches` 8.0.0 counter Total bleve synonym search operations `fts_total_term_searchers` 7.2.0 counter Number of bleve term searchers `fts_total_term_searchers_finished` 7.2.0 counter Total term searchers that have finished serving a query `fts_total_vectors` 7.6.1 gauge The total number of vectors indexed `total_knn_queries_rejected_by_throttler` 7.6.4 counter Total number of http query requests with KNN rejected by the throttler