Metrics about Gerrit’s internal state can be sent to external monitoring systems via plugins. See the plugin documentation for details of plugin implementations.
The following metrics are reported.
build/label: Version of Gerrit server software.
events: Triggered events.
proc/birth_timestamp: Time at which the Gerrit process started.
proc/uptime: Uptime of the Gerrit process.
proc/cpu/usage: CPU time used by the Gerrit process.
proc/num_open_fds: Number of open file descriptors.
proc/jvm/memory/heap_committed: Amount of memory guaranteed for user objects.
proc/jvm/memory/heap_used: Amount of memory holding user objects.
proc/jvm/memory/non_heap_committed: Amount of memory guaranteed for classes, etc.
proc/jvm/memory/non_heap_used: Amount of memory holding classes, etc.
proc/jvm/memory/object_pending_finalization_count: Approximate number of objects needing finalization.
proc/jvm/gc/count: Number of GCs.
proc/jvm/gc/time: Approximate accumulated GC elapsed time.
proc/jvm/thread/num_live: Current live thread count.
caches/memory_cached: Memory entries.
caches/memory_hit_ratio: Memory hit ratio.
caches/memory_eviction_count: Memory eviction count.
caches/disk_cached: Disk entries used by persistent cache.
caches/disk_hit_ratio: Disk hit ratio for persistent cache.
http/server/error_count: Rate of REST API error responses.
http/server/success_count: Rate of REST API success responses.
http/server/rest_api/count: Rate of REST API calls by view.
http/server/rest_api/error_count: Rate of REST API calls by view.
http/server/rest_api/server_latency: REST API call latency by view.
http/server/rest_api/response_bytes: Size of REST API response on network (may be gzip compressed) by view.
query/query_latency: Successful query latency, accumulated over the life of the process.
sshd/sessions/connected: Number of currently connected SSH sessions.
sshd/sessions/created: Rate of new SSH sessions.
sshd/sessions/authentication_failures: Rate of SSH authentication failures.
sql/connection_pool/connections: SQL database connections.
topic/cross_project_submit: number of cross-project topic submissions.
topic/cross_project_submit_completed: number of cross-project topic submissions that concluded successfully.
jgit/block_cache/cache_used: Bytes of memory retained in JGit block cache.
jgit/block_cache/open_files: File handles held open by JGit block cache.
git/upload-pack/request_count: Total number of git-upload-pack requests.
git/upload-pack/phase_counting: Time spent in the Counting… phase.
git/upload-pack/phase_compressing: Time spent in the Compressing… phase.
git/upload-pack/phase_writing: Time spent transferring bytes to client.
git/upload-pack/pack_bytes: Distribution of sizes of packs sent to clients.
batch_update/execute_change_ops: BatchUpdate change update latency, excluding reindexing
batch_update/retry_attempt_counts: Distribution of number of attempts made by RetryHelper (1 == single attempt, no retry)
batch_update/retry_timeout_count: Number of executions of RetryHelper that ultimately timed out
notedb/update_latency: NoteDb update latency by table.
notedb/stage_update_latency: Latency for staging updates to NoteDb by table.
notedb/read_latency: NoteDb read latency by table.
notedb/parse_latency: NoteDb parse latency by table.
notedb/auto_rebuild_latency: NoteDb auto-rebuilding latency by table.
notedb/auto_rebuild_failure_count: NoteDb auto-rebuilding attempts that failed by table.
notedb/external_id_update_count: Total number of external ID updates.
notedb/read_all_external_ids_latency: Latency for reading all external ID’s from NoteDb.
reviewer_suggestion/query_accounts: Latency for querying accounts for reviewer suggestion.
reviewer_suggestion/recommend_accounts: Latency for recommending accounts for reviewer suggestion.
reviewer_suggestion/load_accounts: Latency for loading accounts for reviewer suggestion.
reviewer_suggestion/query_groups: Latency for querying groups for reviewer suggestion.
sequence/next_id_latency: Latency of requesting IDs from repo sequences.
plugins/replication/replication_latency: Time spent pushing to remote destination.
plugins/replication/replication_delay: Time spent waiting before pushing to remote destination.
plugins/replication/replication_retries: Number of retries when pushing to remote destination.
license/cla_check_count: Total number of CLA check requests.
Part of Gerrit Code Review