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Index Service Metrics

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      A list of the metrics provided by the Index Service.

      The following Index-Service metrics can be queried by means of the REST APIs described in Statistics.

      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 and unit (if present).

      index_avg_disk_bps     7.2.0gauge

      Sum of disk bytes written per second, of all indexes, located on this node

      index_avg_drain_rate     7.0.0gauge

      Average number of documents indexed per second, for this index

      index_avg_item_size     7.0.0gauge / bytes

      Average size of the indexed items, for this index

      index_avg_mutation_rate     7.2.0gauge

      Sum of mutation rates of all indexes, located on this node

      index_avg_resident_percent     7.2.0gauge

      Average resident percent across all indexes, located on this node

      index_avg_scan_latency     7.0.0gauge / Nanoseconds

      Average latency observed by the index scans, for this index

      index_cache_hits     7.0.0counter

      Number of times the required index page is found in memory, for this index

      index_cache_misses     7.0.0counter

      Number of times the required index page is NOT found in memory, for this index

      index_data_size     7.0.0gauge / bytes

      The approximate size of the valid uncompressed index data, for this index

      index_data_size_on_disk     7.0.0gauge / bytes

      The size of the valid compressed index data, for this index

      index_disk_size     7.0.0gauge / bytes

      Total disk space taken up by this index, after compression. This includes index data files, checkpoints etc.

      index_frag_percent     7.0.0gauge

      Percentage of invalid index data, for this index

      index_heap_in_use     7.6.0gauge / bytes

      Total heap memory in use by indexer process in the node

      index_items_count     7.0.0gauge

      The actual number of items present in the latest index snapshot, for this index

      index_log_space_on_disk     7.0.0gauge / bytes

      The size of the index data files - including garbage, for this index

      index_memory_quota     7.0.0gauge / bytes

      Configured memory quota for the index service nodes

      index_memory_rss     7.2.0gauge / bytes

      Resident set size of the indexer process, running on this node

      index_memory_total_storage     7.2.0gauge / bytes

      Amount of memory used by the index memory allocator, on this node

      index_memory_used     7.0.0gauge / bytes

      The memory used by this index

      index_memory_used_storage     7.2.0gauge / bytes

      Amount of memory used by underlying index storage, on this node

      index_memory_used_total     7.0.0gauge / bytes

      Total memory used by the indexer process

      index_net_avg_scan_rate     7.6.0gauge

      Average index scan rate across all indexes, for this node

      index_num_docs_indexed     7.0.0counter

      Number of document updates (of type insert, modify, delete) observed by this index

      index_num_docs_pending     7.0.0gauge

      Number of pending updates that are yet to be received by index service, for this index

      index_num_docs_queued     7.0.0gauge

      Number of updates queued (but not yet processed) by index service, for this index

      index_num_indexes     7.2.0gauge

      Total number of indexes, located on this node

      index_num_requests     7.0.0counter

      Number of scan requests received by the index service, for this index

      index_num_rows_returned     7.0.0counter

      Number of rows/index entries returned as the scan result during index scans, for this index

      index_num_rows_scanned     7.0.0counter

      Number of rows/index entries read during the index scans, for this index

      index_num_storage_instances     7.2.0gauge

      Total number of storage instances, located on this node

      index_raw_data_size     7.0.0gauge / bytes

      Encoded, uncompressed size of the index data, for this index

      index_recs_in_mem     7.0.0gauge

      Number of index entries cached in memory, for this index

      index_recs_on_disk     7.0.0gauge

      Number of index entries stored on disk, which are not cached in memory, for this index

      index_resident_percent     7.0.0gauge

      Ratio of records in memory to total records, for this index

      index_scan_bytes_read     7.0.0counter / bytes

      Number of bytes read from the index storage during index scans, for this index

      index_storage_avg_item_size     7.6.0gauge / bytes

      Ratio of total item size and total records

      index_storage_bytes_incoming     7.6.0gauge / bytes

      Aggregated total of bytes that are added to the stores and intended to be written on disc

      index_storage_bytes_written     7.6.0gauge / bytes

      Aggregated total of bytes written to the disc(data and recovery)

      index_storage_cleaner_blk_read_bs     7.6.0gauge / bytes

      Total of number bytes read for cleaner log reads (both data and recovery)

      index_storage_cleaner_num_reads     7.6.0gauge

      Total of number of cleaner log reads (both data and recovery)

      index_storage_compression_ratio     7.6.0gauge / bytes

      Ratio of cumulative number of page bytes compressed and cumulative number of page bytes after compression

      index_storage_current_quota     7.6.0gauge / bytes

      Plasma's internally active memory quota for this node. It is tuned by memtuner.

      index_storage_heap_limit     7.6.0gauge / bytes

      Plasma's global heap limit for managed memory for this node

      index_storage_items_count     7.6.0gauge

      Aggregated number of items that are currently in the stores

      index_storage_lookup_blk_reads_bs     7.6.0gauge / bytes

      Total number of bytes that were read from disc into memory for lookups

      index_storage_lookup_num_reads     7.6.0gauge

      Total number of LSS lookups for looking up items from stores

      index_storage_lss_blk_rdr_reads_bs     7.6.0gauge / bytes

      Total number of bytes that were read from disc into memory from the logs(both data and recovery) for index scans

      index_storage_lss_blk_read_bs     7.6.0gauge / bytes

      Total number of bytes that were read from disc into memory from the logs(both data and recovery)

      index_storage_lss_fragmentation     7.6.0gauge

      The fraction of garbage data present in the logs

      index_storage_lss_num_reads     7.6.0gauge

      Total number of times an LSS(both data and recovery) block is read from disk into memory

      index_storage_lss_used_space     7.6.0gauge / bytes

      Total number of bytes used by data and recovery logs

      index_storage_memory_stats_size_page     7.6.0gauge / bytes

      Aggregated number of bytes of memory currently in use by Plasma for page records

      index_storage_num_burst_visits     7.6.0gauge

      Aggregated total of pages visited during burst eviction

      index_storage_num_evictable     7.6.0gauge

      Aggregated total of the number of pages can be compressed

      index_storage_num_evicted     7.6.0gauge

      Aggregated total of the number of pages that were evicted and persisted to disc

      index_storage_num_pages     7.6.0gauge

      Aggregated number of pages that are currently in use

      index_storage_num_periodic_visits     7.6.0gauge

      Aggregated total of pages visited during periodic eviction

      index_storage_purges     7.6.0gauge

      Aggregated number of times various pages are compacted due to the MVCCPurger being triggered

      index_storage_reclaim_pending_global     7.6.0gauge / bytes

      Aggregated number of bytes across all plasma instances which have been freed but not yet returned to OS

      index_storage_resident_ratio     7.6.0gauge

      Ratio of cached records and total records

      index_storage_rlss_num_reads     7.6.0gauge

      Total number of times an LSS block was read into memory due to index scans

      index_total_data_size     7.2.0gauge / bytes

      Sum of data size of all indexes, located on this node

      index_total_disk_size     7.2.0gauge / bytes

      Sum of disk size of all indexes, located on this node

      index_total_drain_rate     7.2.0gauge

      Sum of drain rate of all indexes, located on this node

      index_total_mutation_queue_size     7.6.0gauge

      Total number of index updates queued in the mutation queues, on this node

      index_total_pending_scans     7.6.0gauge

      Sum of number of pending scans across all indexes, located on this node

      index_total_raw_data_size     7.6.0gauge / bytes

      Sum of encoded, uncompressed size of the index data across all indexes, located on this node

      index_total_requests     7.2.0counter

      Sum of number of requests received by all indexes, located on this node

      index_total_rows_returned     7.2.0counter

      Sum of number of rows returned during index scan across all indexes, located on this node

      index_total_rows_scanned     7.2.0counter

      Sum of number of rows scanned during index scans across all indexes, located on this node

      index_total_scan_duration     7.0.0counter / Nanoseconds

      Total time taken by the scans requests, for this index