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ScyllaDB Metric Update - Scylla 5.4 to 6.0¶

ScyllaDB 6.0 Dashboards are available as part of the latest Scylla Monitoring Stack.

The following metrics are new in ScyllaDB 6.0:¶

Metric	Description
scylla_column_family_tablet_count	Tablet count
scylla_cql_replication_strategy_fail_list_violations	Counts the number of replication_strategy_fail_list guardrail violations, i.e., attempts to set a forbidden replication strategy in a keyspace via CREATE/ALTER KEYSPACE.
scylla_cql_replication_strategy_warn_list_violations	Counts the number of replication_strategy_warn_list guardrail violations, i.e., attempts to set a discouraged replication strategy in a keyspace via CREATE/ALTER KEYSPACE.
scylla_load_balancer_resizes_emitted	Number of resizes produced by the load balancer
scylla_load_balancer_resizes_finalized	Number of resizes finalized by the load balancer.
scylla_reactor_fstream_read_bytes_blocked	Counts the number of bytes read from disk that could not be satisfied from read-ahead buffers, and had to block. Indicates short streams or incorrect read ahead configuration.
scylla_reactor_fstream_read_bytes	Counts bytes read from disk file streams. A high rate indicates high disk activity. Divide by fstream_reads to determine the average read size.
scylla_reactor_fstream_reads_ahead_bytes_discarded	Counts the number of buffered bytes that were read ahead of time and were discarded because they were not needed, wasting disk bandwidth. Indicates over-eager read ahead configuration.
scylla_reactor_fstream_reads_aheads_discarded	Counts the number of times a buffer that was read ahead of time and was discarded because it was not needed, wasting disk bandwidth. Indicates over-eager read ahead configuration.
scylla_reactor_fstream_reads_blocked	Counts the number of times a disk read could not be satisfied from read-ahead buffers, and had to block. Indicates short streams or incorrect read ahead configuration.
scylla_reactor_fstream_reads	Counts reads from disk file streams. A high rate indicates high disk activity. Contrast with other fstream_read* counters to locate bottlenecks.
scylla_tablets_count	Tablet count

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