Metrics about Gerrit’s internal state can be sent to external monitoring systems via plugins. See the plugin documentation for details of plugin implementations.
Metrics
The following metrics are reported.
General
-
build/label
: Version of Gerrit server software. -
events
: Triggered events.
Actions
-
action/retry_attempt_count
: Number of retry attempts made by RetryHelper to execute an action (0 == single attempt, no retry) -
action/retry_timeout_count
: Number of action executions of RetryHelper that ultimately timed out -
action/auto_retry_count
: Number of automatic retries with tracing -
action/failures_on_auto_retry_count
: Number of failures on auto retry
Pushes
-
receivecommits/changes
: histogram of number of changes processed in a single upload, split up by update type (change created/updated, change autoclosed). -
receivecommits/latency
: latency per change for processing a push, split up by update type (create+replace, and autoclose) -
receivecommits/push_latency
: total latency for processing a push, split up by update type (create+replace, autoclose, normal) -
receivecommits/timeout
: number of timeouts during push processing.
Process
-
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
-
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.
Change
-
change/submit_rule_evaluation
: Latency for evaluating submit rules on a change. -
change/submit_type_evaluation
: Latency for evaluating the submit type on a change.
HTTP
-
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/change_id_type
: Rate of REST API calls by change ID type. -
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. -
http/server/rest_api/change_json/to_change_info_latency
: Latency for toChangeInfo invocations in ChangeJson. -
http/server/rest_api/change_json/to_change_infos_latency
: Latency for toChangeInfos invocations in ChangeJson. -
http/server/rest_api/change_json/format_query_results_latency
: Latency for formatQueryResults invocations in ChangeJson. -
http/server/rest_api/ui_actions/latency
: Latency for RestView#getDescription calls.
Query
-
query/query_latency
: Successful query latency, accumulated over the life of the process.
Core Queues
The following queues support metrics:
-
default
WorkQueue
-
index batch
-
index interactive
-
receive commits
-
send email
-
ssh batch worker
-
ssh command start
-
ssh interactive worker
-
ssh stream worker
Each queue provides the following metrics:
-
queue/<queue_name>/pool_size
: Current number of threads in the pool -
queue/<queue_name>/max_pool_size
: Maximum allowed number of threads in the pool -
queue/<queue_name>/active_threads
: Number of threads that are actively executing tasks -
queue/<queue_name>/scheduled_tasks
: Number of scheduled tasks in the queue -
queue/<queue_name>/total_scheduled_tasks_count
: Total number of tasks that have been scheduled -
queue/<queue_name>/total_completed_tasks_count
: Total number of tasks that have completed execution
SSH sessions
-
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.
Topics
-
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
-
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
-
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.
BatchUpdate
-
batch_update/execute_change_ops
: BatchUpdate change update latency, excluding reindexing
NoteDb
-
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/external_id_cache_load_count
: Total number of times the external ID cache loader was called. -
notedb/external_id_partial_read_latency
: Latency for generating a new external ID cache state from a prior state. -
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.
Permissions
-
permissions/project_state/computation_latency
: Latency to compute current access sections on a project by traversing it’s parents. -
permissions/permission_collection/filter_latency
: Latency to filter access sections by user and ref. -
permissions/ref_filter/full_filter_count
: Rate of full ref filter operations -
permissions/ref_filter/skip_filter_count
: Rate of ref filter operations where we skip full evaluation because the user can read all refs
Reviewer Suggestion
-
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.
Repo Sequences
-
sequence/next_id_latency
: Latency of requesting IDs from repo sequences.
Plugin
-
plugin/latency
: Latency for plugin invocation. -
plugin/error_count
: Number of plugin errors.
Group
-
group/guess_relevant_groups_latency
: Latency for guessing relevant groups.
Replication Plugin
-
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.