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Metrics Update Between 2025.1 and 2025.2¶
ScyllaDB 2025.2 Dashboards are available as part of the latest Scylla Monitoring Stack.
New Metrics¶
The following metrics are new in ScyllaDB 2025.2 compared to 2025.1:
Metric |
Description |
|---|---|
scylla_alternator_batch_item_count_histogram |
A histogram of the number of items in a batch request. |
scylla_database_total_view_updates_failed_pairing |
Total number of view updates for which we failed base/view pairing. |
scylla_group_name_cross_rack_collocations |
The number of co-locating migrations that move replica across racks. |
scylla_network_bytes_received |
The number of bytes received from network sockets. |
scylla_network_bytes_sent |
The number of bytes written to network sockets. |
scylla_reactor_awake_time_ms_total |
Total reactor awake time (wall_clock). |
scylla_reactor_cpu_used_time_ms |
Total reactor thread CPU time (from CLOCK_THREAD_CPUTIME). |
scylla_reactor_sleep_time_ms_total |
Total reactor sleep time (wall clock). |
scylla_sstable_compression_dicts_total_live_memory_bytes |
Total amount of memory consumed by SSTable compression dictionaries in RAM. |
scylla_transport_connections_blocked |
Holds an incrementing counter with the CQL connections that were blocked before being processed due to threshold configured via uninitialized_connections_semaphore_cpu_concurrency.Blocks are normal when we have multiple connections initialized at once. If connectionsare timing out and this value is high it indicates either connections storm or unusually slow processing. |
scylla_transport_connections_shed |
Holds an incrementing counter with the CQL connections that were shed due to concurrency semaphore timeout (threshold configured via uninitialized_connections_semaphore_cpu_concurrency). This typically can happen during connection. |