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Metrics Update Between 2026.x and 2026.3¶
ScyllaDB 2026.3 Dashboards are available as part of the latest Scylla Monitoring Stack.
New Metrics in 2026.3¶
The following metrics are new in ScyllaDB 2026.3 compared to 2026.2.
Metric |
Description |
|---|---|
scylla_alternator_conditional_check_failed |
The number of conditional requests whose condition was false (ConditionalCheckFailedException). |
scylla_alternator_returned_items |
The number of items returned by Query and Scan operations (not other operations). |
scylla_alternator_returned_items_histogram |
A histogram of the number of items returned per Query or Scan operation. |
scylla_alternator_returned_records |
The number of stream records returned by GetRecords operations. |
scylla_alternator_system_errors |
The number of HTTP 500 internal server error responses. |
scylla_alternator_user_errors |
The number of HTTP 400 client error responses, excluding ConditionalCheckFailedException. |
scylla_alternator_vector_search_query |
The number of Query operations with VectorSearch. |
scylla_alternator_vector_search_query_items_from_base_table |
The total number of items read from the base table by Vector Search queries. |
scylla_alternator_vector_search_query_items_from_vs |
The total number of nearest neighbors found by the vector store (some may be post-filtered and not returned). |
scylla_alternator_vector_search_query_returned_items |
The total number of items returned by Query operations with Vector Search. |
scylla_database_large_cell_exceeding_threshold |
The number of large cells exceeding |
scylla_database_large_collection_exceeding_threshold |
The number of large collections exceeding |
scylla_database_large_rows_exceeding_threshold |
The number of large rows exceeding |
scylla_database_reads_memory_borrowed_from_shared_pool |
The current amount of memory borrowed from the shared pool. |
scylla_database_reads_shared_pool_available_memory |
The current amount of available memory in the shared reader concurrency semaphore pool. |
scylla_database_reads_shared_pool_total_memory |
The total memory of the shared reader concurrency semaphore pool. |
scylla_group_name_rebuilds_produced |
The number of rebuilds produced by the load balancer. |
scylla_group_name_repairs_produced |
The number of repairs produced by the load balancer. |
scylla_logstor_sm_separator_buffers_in_use |
The current number of separator buffers in use. |
scylla_memory_logstor_bytes |
The current size of memory used by logstor in bytes. |
scylla_s3_integrated_request_queue_length |
The number of queued HTTP requests integrated over time (measured in request-seconds). |
scylla_s3_total_connect_latency_sec |
The total time in seconds spent in HTTP CONNECT requests. |
scylla_s3_total_connect_requests |
The total number of HTTP CONNECT requests. |
scylla_s3_total_connect_retries |
The total number of HTTP CONNECT retries. |
scylla_s3_total_delete_latency_sec |
The total time in seconds spent in HTTP DELETE requests. |
scylla_s3_total_delete_requests |
The total number of HTTP DELETE requests. |
scylla_s3_total_delete_retries |
The total number of HTTP DELETE retries. |
scylla_s3_total_get_latency_sec |
The total time in seconds spent in HTTP GET requests |
scylla_s3_total_get_requests |
The total number of HTTP GET requests. |
scylla_s3_total_get_retries |
The total number of HTTP GET retries. |
scylla_s3_total_head_latency_sec |
The total time in seconds spent in HTTP HEAD requests. |
scylla_s3_total_head_requests |
The total number of HTTP HEAD requests. |
scylla_s3_total_head_retries |
The total number of HTTP HEAD retries. |
scylla_s3_total_options_latency_sec |
The total time in seconds spent in HTTP OPTIONS requests. |
scylla_s3_total_options_requests |
The total number of HTTP OPTIONS requests. |
scylla_s3_total_options_retries |
The total number of HTTP OPTIONS retries. |
scylla_s3_total_patch_latency_sec |
The total time in seconds spent in HTTP PATCH requests. |
scylla_s3_total_patch_requests |
The total number of HTTP PATCH requests. |
scylla_s3_total_patch_retries |
The total number of HTTP PATCH retries. |
scylla_s3_total_post_latency_sec |
The total time in seconds spent in HTTP POST requests. |
scylla_s3_total_post_requests |
The total number of HTTP POST requests. |
scylla_s3_total_post_retries |
The total number of HTTP POST retries. |
scylla_s3_total_put_latency_sec |
The total time in seconds spent in HTTP PUT requests. |
scylla_s3_total_put_requests |
The total number of HTTP PUT requests. |
scylla_s3_total_put_retries |
The total number of HTTP PUT retries. |
scylla_s3_total_trace_latency_sec |
The total time in seconds spent in HTTP TRACE requests. |
scylla_s3_total_trace_requests |
The total number of HTTP TRACE requests. |
scylla_s3_total_trace_retries |
The total number of HTTP TRACE retries. |
scylla_service_level_workload_type |
The workload type configured for each service level. 0 - unspecified, 1 - batch, 2 - interactive. |
scylla_strong_consistency_coordinator_read_errors |
The number of strong consistency read requests that failed. |
scylla_strong_consistency_coordinator_read_latency |
A strong consistency read latency histogram. |
scylla_strong_consistency_coordinator_read_latency_summary |
A strong consistency read latency summary. |
scylla_strong_consistency_coordinator_read_node_bounces |
The number of strong consistency read requests bounced to another node. |
scylla_strong_consistency_coordinator_read_shard_bounces |
The number of strong consistency read requests bounced to another shard. |
scylla_strong_consistency_coordinator_write_errors |
The number of strong consistency write requests that failed. |
scylla_strong_consistency_coordinator_write_latency |
A strong consistency write latency histogram. |
scylla_strong_consistency_coordinator_write_latency_summary |
A strong consistency write latency summary. |
scylla_strong_consistency_coordinator_write_node_bounces |
The vnumber of strong consistency write requests bounced to another node. |
scylla_strong_consistency_coordinator_write_shard_bounces |
The number of strong consistency write requests bounced to another shard. |
scylla_transport_cql_client_timestamp_drift_histogram |
A histogram of the drift in microseconds between the client-provided CQL timestamp and the server time at request arrival. Useful for detecting transport delays before requests reach the CQL server. |
scylla_transport_cql_request_latency_histogram |
A histogram of transport-level CQL request latencies (in microseconds), measuring from the start of request processing until the response is written to the socket. |
Renamed Metrics in 2026.3¶
The following metrics are renamed in ScyllaDB 2026.3 compared to 2026.2.
Metric Name in 2026.2 |
Metric Name in 2026.3 |
|---|---|
scylla_s3_downloads_blocked_on_memory |
scylla_s3_downloads_starving_on_max_concurrency |