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Diffstat (limited to 'doc/administration/monitoring/prometheus/gitlab_metrics.md')
| -rw-r--r-- | doc/administration/monitoring/prometheus/gitlab_metrics.md | 165 |
1 files changed, 88 insertions, 77 deletions
diff --git a/doc/administration/monitoring/prometheus/gitlab_metrics.md b/doc/administration/monitoring/prometheus/gitlab_metrics.md index 0833412ecb8..f725db9a039 100644 --- a/doc/administration/monitoring/prometheus/gitlab_metrics.md +++ b/doc/administration/monitoring/prometheus/gitlab_metrics.md @@ -1,3 +1,9 @@ +--- +stage: Monitor +group: APM +info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers +--- + # GitLab Prometheus metrics >**Note:** @@ -31,16 +37,17 @@ The following metrics are available: | Metric | Type | Since | Description | Labels | |:---------------------------------------------------------------|:----------|-----------------------:|:----------------------------------------------------------------------------------------------------|:----------------------------------------------------| -| `gitlab_banzai_cached_render_real_duration_seconds` | Histogram | 9.4 | Duration of rendering Markdown into HTML when cached output exists | controller, action | -| `gitlab_banzai_cacheless_render_real_duration_seconds` | Histogram | 9.4 | Duration of rendering Markdown into HTML when cached output does not exist | controller, action | -| `gitlab_cache_misses_total` | Counter | 10.2 | Cache read miss | controller, action | +| `gitlab_banzai_cached_render_real_duration_seconds` | Histogram | 9.4 | Duration of rendering Markdown into HTML when cached output exists | `controller`, `action` | +| `gitlab_banzai_cacheless_render_real_duration_seconds` | Histogram | 9.4 | Duration of rendering Markdown into HTML when cached output does not exist | `controller`, `action` | +| `gitlab_cache_misses_total` | Counter | 10.2 | Cache read miss | `controller`, `action` | | `gitlab_cache_operation_duration_seconds` | Histogram | 10.2 | Cache access time | | -| `gitlab_cache_operations_total` | Counter | 12.2 | Cache operations by controller/action | controller, action, operation | -| `job_waiter_started_total` | Counter | 12.9 | Number of batches of jobs started where a web request is waiting for the jobs to complete | worker | -| `job_waiter_timeouts_total` | Counter | 12.9 | Number of batches of jobs that timed out where a web request is waiting for the jobs to complete | worker | +| `gitlab_cache_operations_total` | Counter | 12.2 | Cache operations by controller/action | `controller`, `action`, `operation` | +| `gitlab_ci_pipeline_creation_duration_seconds` | Histogram | 13.0 | Time in seconds it takes to create a CI/CD pipeline | | +| `job_waiter_started_total` | Counter | 12.9 | Number of batches of jobs started where a web request is waiting for the jobs to complete | `worker` | +| `job_waiter_timeouts_total` | Counter | 12.9 | Number of batches of jobs that timed out where a web request is waiting for the jobs to complete | `worker` | | `gitlab_database_transaction_seconds` | Histogram | 12.1 | Time spent in database transactions, in seconds | | -| `gitlab_method_call_duration_seconds` | Histogram | 10.2 | Method calls real duration | controller, action, module, method | -| `gitlab_page_out_of_bounds` | Counter | 12.8 | Counter for the PageLimiter pagination limit being hit | controller, action, bot | +| `gitlab_method_call_duration_seconds` | Histogram | 10.2 | Method calls real duration | `controller`, `action`, `module`, `method` | +| `gitlab_page_out_of_bounds` | Counter | 12.8 | Counter for the PageLimiter pagination limit being hit | `controller`, `action`, `bot` | | `gitlab_rails_queue_duration_seconds` | Histogram | 9.4 | Measures latency between GitLab Workhorse forwarding a request to Rails | | | `gitlab_sql_duration_seconds` | Histogram | 10.2 | SQL execution time, excluding SCHEMA operations and BEGIN / COMMIT | | | `gitlab_transaction_allocated_memory_bytes` | Histogram | 10.2 | Allocated memory for all transactions (gitlab_transaction_* metrics) | | @@ -48,27 +55,27 @@ The following metrics are available: | `gitlab_transaction_cache_<key>_duration_total` | Counter | 10.2 | Counter for total time (seconds) spent in Rails cache calls (per key) | | | `gitlab_transaction_cache_count_total` | Counter | 10.2 | Counter for total Rails cache calls (aggregate) | | | `gitlab_transaction_cache_duration_total` | Counter | 10.2 | Counter for total time (seconds) spent in Rails cache calls (aggregate) | | -| `gitlab_transaction_cache_read_hit_count_total` | Counter | 10.2 | Counter for cache hits for Rails cache calls | controller, action | -| `gitlab_transaction_cache_read_miss_count_total` | Counter | 10.2 | Counter for cache misses for Rails cache calls | controller, action | -| `gitlab_transaction_duration_seconds` | Histogram | 10.2 | Duration for all transactions (gitlab_transaction_* metrics) | controller, action | +| `gitlab_transaction_cache_read_hit_count_total` | Counter | 10.2 | Counter for cache hits for Rails cache calls | `controller`, `action` | +| `gitlab_transaction_cache_read_miss_count_total` | Counter | 10.2 | Counter for cache misses for Rails cache calls | `controller`, `action` | +| `gitlab_transaction_duration_seconds` | Histogram | 10.2 | Duration for all transactions (gitlab_transaction_* metrics) | `controller`, `action` | | `gitlab_transaction_event_build_found_total` | Counter | 9.4 | Counter for build found for API /jobs/request | | | `gitlab_transaction_event_build_invalid_total` | Counter | 9.4 | Counter for build invalid due to concurrency conflict for API /jobs/request | | | `gitlab_transaction_event_build_not_found_cached_total` | Counter | 9.4 | Counter for cached response of build not found for API /jobs/request | | | `gitlab_transaction_event_build_not_found_total` | Counter | 9.4 | Counter for build not found for API /jobs/request | | | `gitlab_transaction_event_change_default_branch_total` | Counter | 9.4 | Counter when default branch is changed for any repository | | | `gitlab_transaction_event_create_repository_total` | Counter | 9.4 | Counter when any repository is created | | -| `gitlab_transaction_event_etag_caching_cache_hit_total` | Counter | 9.4 | Counter for etag cache hit. | endpoint | -| `gitlab_transaction_event_etag_caching_header_missing_total` | Counter | 9.4 | Counter for etag cache miss - header missing | endpoint | -| `gitlab_transaction_event_etag_caching_key_not_found_total` | Counter | 9.4 | Counter for etag cache miss - key not found | endpoint | -| `gitlab_transaction_event_etag_caching_middleware_used_total` | Counter | 9.4 | Counter for etag middleware accessed | endpoint | -| `gitlab_transaction_event_etag_caching_resource_changed_total` | Counter | 9.4 | Counter for etag cache miss - resource changed | endpoint | +| `gitlab_transaction_event_etag_caching_cache_hit_total` | Counter | 9.4 | Counter for etag cache hit. | `endpoint` | +| `gitlab_transaction_event_etag_caching_header_missing_total` | Counter | 9.4 | Counter for etag cache miss - header missing | `endpoint` | +| `gitlab_transaction_event_etag_caching_key_not_found_total` | Counter | 9.4 | Counter for etag cache miss - key not found | `endpoint` | +| `gitlab_transaction_event_etag_caching_middleware_used_total` | Counter | 9.4 | Counter for etag middleware accessed | `endpoint` | +| `gitlab_transaction_event_etag_caching_resource_changed_total` | Counter | 9.4 | Counter for etag cache miss - resource changed | `endpoint` | | `gitlab_transaction_event_fork_repository_total` | Counter | 9.4 | Counter for repository forks (RepositoryForkWorker). Only incremented when source repository exists | | | `gitlab_transaction_event_import_repository_total` | Counter | 9.4 | Counter for repository imports (RepositoryImportWorker) | | | `gitlab_transaction_event_push_branch_total` | Counter | 9.4 | Counter for all branch pushes | | -| `gitlab_transaction_event_push_commit_total` | Counter | 9.4 | Counter for commits | branch | +| `gitlab_transaction_event_push_commit_total` | Counter | 9.4 | Counter for commits | `branch` | | `gitlab_transaction_event_push_tag_total` | Counter | 9.4 | Counter for tag pushes | | | `gitlab_transaction_event_rails_exception_total` | Counter | 9.4 | Counter for number of rails exceptions | | -| `gitlab_transaction_event_receive_email_total` | Counter | 9.4 | Counter for received emails | handler | +| `gitlab_transaction_event_receive_email_total` | Counter | 9.4 | Counter for received emails | `handler` | | `gitlab_transaction_event_remote_mirrors_failed_total` | Counter | 10.8 | Counter for failed remote mirrors | | | `gitlab_transaction_event_remote_mirrors_finished_total` | Counter | 10.8 | Counter for finished remote mirrors | | | `gitlab_transaction_event_remote_mirrors_running_total` | Counter | 10.8 | Counter for running remote mirrors | | @@ -76,15 +83,15 @@ The following metrics are available: | `gitlab_transaction_event_remove_repository_total` | Counter | 9.4 | Counter when a repository is removed | | | `gitlab_transaction_event_remove_tag_total` | Counter | 9.4 | Counter when a tag is remove for any repository | | | `gitlab_transaction_event_sidekiq_exception_total` | Counter | 9.4 | Counter of Sidekiq exceptions | | -| `gitlab_transaction_event_stuck_import_jobs_total` | Counter | 9.4 | Count of stuck import jobs | projects_without_jid_count, projects_with_jid_count | -| `gitlab_transaction_event_update_build_total` | Counter | 9.4 | Counter for update build for API /jobs/request/:id | | +| `gitlab_transaction_event_stuck_import_jobs_total` | Counter | 9.4 | Count of stuck import jobs | `projects_without_jid_count`, `projects_with_jid_count` | +| `gitlab_transaction_event_update_build_total` | Counter | 9.4 | Counter for update build for API `/jobs/request/:id` | | | `gitlab_transaction_new_redis_connections_total` | Counter | 9.4 | Counter for new Redis connections | | | `gitlab_transaction_queue_duration_total` | Counter | 9.4 | Duration jobs were enqueued before processing | | -| `gitlab_transaction_rails_queue_duration_total` | Counter | 9.4 | Measures latency between GitLab Workhorse forwarding a request to Rails | controller, action | -| `gitlab_transaction_view_duration_total` | Counter | 9.4 | Duration for views | controller, action, view | -| `gitlab_view_rendering_duration_seconds` | Histogram | 10.2 | Duration for views (histogram) | controller, action, view | -| `http_requests_total` | Counter | 9.4 | Rack request count | method | -| `http_request_duration_seconds` | Histogram | 9.4 | HTTP response time from rack middleware | method, status | +| `gitlab_transaction_rails_queue_duration_total` | Counter | 9.4 | Measures latency between GitLab Workhorse forwarding a request to Rails | `controller`, `action` | +| `gitlab_transaction_view_duration_total` | Counter | 9.4 | Duration for views | `controller`, `action`, `view` | +| `gitlab_view_rendering_duration_seconds` | Histogram | 10.2 | Duration for views (histogram) | `controller`, `action`, `view` | +| `http_requests_total` | Counter | 9.4 | Rack request count | `method` | +| `http_request_duration_seconds` | Histogram | 9.4 | HTTP response time from rack middleware | `method`, `status` | | `pipelines_created_total` | Counter | 9.4 | Counter of pipelines created | | | `rack_uncaught_errors_total` | Counter | 9.4 | Rack connections handling uncaught errors count | | | `user_session_logins_total` | Counter | 9.4 | Counter of how many users have logged in | | @@ -112,49 +119,52 @@ configuration option in `gitlab.yml`. These metrics are served from the | Metric | Type | Since | Description | Labels | |:---------------------------------------------- |:------- |:----- |:----------- |:------ | -| `sidekiq_jobs_cpu_seconds` | Histogram | 12.4 | Seconds of cpu time to run Sidekiq job | queue, boundary, external_dependencies, feature_category, job_status, urgency | -| `sidekiq_jobs_completion_seconds` | Histogram | 12.2 | Seconds to complete Sidekiq job | queue, boundary, external_dependencies, feature_category, job_status, urgency | -| `sidekiq_jobs_db_seconds` | Histogram | 12.9 | Seconds of DB time to run Sidekiq job | queue, boundary, external_dependencies, feature_category, job_status, urgency | -| `sidekiq_jobs_gitaly_seconds` | Histogram | 12.9 | Seconds of Gitaly time to run Sidekiq job | queue, boundary, external_dependencies, feature_category, job_status, urgency | -| `sidekiq_jobs_queue_duration_seconds` | Histogram | 12.5 | Duration in seconds that a Sidekiq job was queued before being executed | queue, boundary, external_dependencies, feature_category, urgency | -| `sidekiq_jobs_failed_total` | Counter | 12.2 | Sidekiq jobs failed | queue, boundary, external_dependencies, feature_category, urgency | -| `sidekiq_jobs_retried_total` | Counter | 12.2 | Sidekiq jobs retried | queue, boundary, external_dependencies, feature_category, urgency | -| `sidekiq_running_jobs` | Gauge | 12.2 | Number of Sidekiq jobs running | queue, boundary, external_dependencies, feature_category, urgency | +| `sidekiq_jobs_cpu_seconds` | Histogram | 12.4 | Seconds of cpu time to run Sidekiq job | `queue`, `boundary`, `external_dependencies`, `feature_category`, `job_status`, `urgency` | +| `sidekiq_jobs_completion_seconds` | Histogram | 12.2 | Seconds to complete Sidekiq job | `queue`, `boundary`, `external_dependencies`, `feature_category`, `job_status`, `urgency` | +| `sidekiq_jobs_db_seconds` | Histogram | 12.9 | Seconds of DB time to run Sidekiq job | `queue`, `boundary`, `external_dependencies`, `feature_category`, `job_status`, `urgency` | +| `sidekiq_jobs_gitaly_seconds` | Histogram | 12.9 | Seconds of Gitaly time to run Sidekiq job | `queue`, `boundary`, `external_dependencies`, `feature_category`, `job_status`, `urgency` | +| `sidekiq_jobs_queue_duration_seconds` | Histogram | 12.5 | Duration in seconds that a Sidekiq job was queued before being executed | `queue`, `boundary`, `external_dependencies`, `feature_category`, `urgency` | +| `sidekiq_jobs_failed_total` | Counter | 12.2 | Sidekiq jobs failed | `queue`, `boundary`, `external_dependencies`, `feature_category`, `urgency` | +| `sidekiq_jobs_retried_total` | Counter | 12.2 | Sidekiq jobs retried | `queue`, `boundary`, `external_dependencies`, `feature_category`, `urgency` | +| `sidekiq_running_jobs` | Gauge | 12.2 | Number of Sidekiq jobs running | `queue`, `boundary`, `external_dependencies`, `feature_category`, `urgency` | | `sidekiq_concurrency` | Gauge | 12.5 | Maximum number of Sidekiq jobs | | -| `geo_db_replication_lag_seconds` | Gauge | 10.2 | Database replication lag (seconds) | url | -| `geo_repositories` | Gauge | 10.2 | Total number of repositories available on primary | url | -| `geo_repositories_synced` | Gauge | 10.2 | Number of repositories synced on secondary | url | -| `geo_repositories_failed` | Gauge | 10.2 | Number of repositories failed to sync on secondary | url | -| `geo_lfs_objects` | Gauge | 10.2 | Total number of LFS objects available on primary | url | -| `geo_lfs_objects_synced` | Gauge | 10.2 | Number of LFS objects synced on secondary | url | -| `geo_lfs_objects_failed` | Gauge | 10.2 | Number of LFS objects failed to sync on secondary | url | -| `geo_attachments` | Gauge | 10.2 | Total number of file attachments available on primary | url | -| `geo_attachments_synced` | Gauge | 10.2 | Number of attachments synced on secondary | url | -| `geo_attachments_failed` | Gauge | 10.2 | Number of attachments failed to sync on secondary | url | -| `geo_last_event_id` | Gauge | 10.2 | Database ID of the latest event log entry on the primary | url | -| `geo_last_event_timestamp` | Gauge | 10.2 | UNIX timestamp of the latest event log entry on the primary | url | -| `geo_cursor_last_event_id` | Gauge | 10.2 | Last database ID of the event log processed by the secondary | url | -| `geo_cursor_last_event_timestamp` | Gauge | 10.2 | Last UNIX timestamp of the event log processed by the secondary | url | -| `geo_status_failed_total` | Counter | 10.2 | Number of times retrieving the status from the Geo Node failed | url | -| `geo_last_successful_status_check_timestamp` | Gauge | 10.2 | Last timestamp when the status was successfully updated | url | -| `geo_lfs_objects_synced_missing_on_primary` | Gauge | 10.7 | Number of LFS objects marked as synced due to the file missing on the primary | url | -| `geo_job_artifacts_synced_missing_on_primary` | Gauge | 10.7 | Number of job artifacts marked as synced due to the file missing on the primary | url | -| `geo_attachments_synced_missing_on_primary` | Gauge | 10.7 | Number of attachments marked as synced due to the file missing on the primary | url | -| `geo_repositories_checksummed_count` | Gauge | 10.7 | Number of repositories checksummed on primary | url | -| `geo_repositories_checksum_failed_count` | Gauge | 10.7 | Number of repositories failed to calculate the checksum on primary | url | -| `geo_wikis_checksummed_count` | Gauge | 10.7 | Number of wikis checksummed on primary | url | -| `geo_wikis_checksum_failed_count` | Gauge | 10.7 | Number of wikis failed to calculate the checksum on primary | url | -| `geo_repositories_verified_count` | Gauge | 10.7 | Number of repositories verified on secondary | url | -| `geo_repositories_verification_failed_count` | Gauge | 10.7 | Number of repositories failed to verify on secondary | url | -| `geo_repositories_checksum_mismatch_count` | Gauge | 10.7 | Number of repositories that checksum mismatch on secondary | url | -| `geo_wikis_verified_count` | Gauge | 10.7 | Number of wikis verified on secondary | url | -| `geo_wikis_verification_failed_count` | Gauge | 10.7 | Number of wikis failed to verify on secondary | url | -| `geo_wikis_checksum_mismatch_count` | Gauge | 10.7 | Number of wikis that checksum mismatch on secondary | url | -| `geo_repositories_checked_count` | Gauge | 11.1 | Number of repositories that have been checked via `git fsck` | url | -| `geo_repositories_checked_failed_count` | Gauge | 11.1 | Number of repositories that have a failure from `git fsck` | url | -| `geo_repositories_retrying_verification_count` | Gauge | 11.2 | Number of repositories verification failures that Geo is actively trying to correct on secondary | url | -| `geo_wikis_retrying_verification_count` | Gauge | 11.2 | Number of wikis verification failures that Geo is actively trying to correct on secondary | url | +| `geo_db_replication_lag_seconds` | Gauge | 10.2 | Database replication lag (seconds) | `url` | +| `geo_repositories` | Gauge | 10.2 | Total number of repositories available on primary | `url` | +| `geo_repositories_synced` | Gauge | 10.2 | Number of repositories synced on secondary | `url` | +| `geo_repositories_failed` | Gauge | 10.2 | Number of repositories failed to sync on secondary | `url` | +| `geo_lfs_objects` | Gauge | 10.2 | Total number of LFS objects available on primary | `url` | +| `geo_lfs_objects_synced` | Gauge | 10.2 | Number of LFS objects synced on secondary | `url` | +| `geo_lfs_objects_failed` | Gauge | 10.2 | Number of LFS objects failed to sync on secondary | `url` | +| `geo_attachments` | Gauge | 10.2 | Total number of file attachments available on primary | `url` | +| `geo_attachments_synced` | Gauge | 10.2 | Number of attachments synced on secondary | `url` | +| `geo_attachments_failed` | Gauge | 10.2 | Number of attachments failed to sync on secondary | `url` | +| `geo_last_event_id` | Gauge | 10.2 | Database ID of the latest event log entry on the primary | `url` | +| `geo_last_event_timestamp` | Gauge | 10.2 | UNIX timestamp of the latest event log entry on the primary | `url` | +| `geo_cursor_last_event_id` | Gauge | 10.2 | Last database ID of the event log processed by the secondary | `url` | +| `geo_cursor_last_event_timestamp` | Gauge | 10.2 | Last UNIX timestamp of the event log processed by the secondary | `url` | +| `geo_status_failed_total` | Counter | 10.2 | Number of times retrieving the status from the Geo Node failed | `url` | +| `geo_last_successful_status_check_timestamp` | Gauge | 10.2 | Last timestamp when the status was successfully updated | `url` | +| `geo_lfs_objects_synced_missing_on_primary` | Gauge | 10.7 | Number of LFS objects marked as synced due to the file missing on the primary | `url` | +| `geo_job_artifacts_synced_missing_on_primary` | Gauge | 10.7 | Number of job artifacts marked as synced due to the file missing on the primary | `url` | +| `geo_attachments_synced_missing_on_primary` | Gauge | 10.7 | Number of attachments marked as synced due to the file missing on the primary | `url` | +| `geo_repositories_checksummed_count` | Gauge | 10.7 | Number of repositories checksummed on primary | `url` | +| `geo_repositories_checksum_failed_count` | Gauge | 10.7 | Number of repositories failed to calculate the checksum on primary | `url` | +| `geo_wikis_checksummed_count` | Gauge | 10.7 | Number of wikis checksummed on primary | `url` | +| `geo_wikis_checksum_failed_count` | Gauge | 10.7 | Number of wikis failed to calculate the checksum on primary | `url` | +| `geo_repositories_verified_count` | Gauge | 10.7 | Number of repositories verified on secondary | `url` | +| `geo_repositories_verification_failed_count` | Gauge | 10.7 | Number of repositories failed to verify on secondary | `url` | +| `geo_repositories_checksum_mismatch_count` | Gauge | 10.7 | Number of repositories that checksum mismatch on secondary | `url` | +| `geo_wikis_verified_count` | Gauge | 10.7 | Number of wikis verified on secondary | `url` | +| `geo_wikis_verification_failed_count` | Gauge | 10.7 | Number of wikis failed to verify on secondary | `url` | +| `geo_wikis_checksum_mismatch_count` | Gauge | 10.7 | Number of wikis that checksum mismatch on secondary | `url` | +| `geo_repositories_checked_count` | Gauge | 11.1 | Number of repositories that have been checked via `git fsck` | `url` | +| `geo_repositories_checked_failed_count` | Gauge | 11.1 | Number of repositories that have a failure from `git fsck` | `url` | +| `geo_repositories_retrying_verification_count` | Gauge | 11.2 | Number of repositories verification failures that Geo is actively trying to correct on secondary | `url` | +| `geo_wikis_retrying_verification_count` | Gauge | 11.2 | Number of wikis verification failures that Geo is actively trying to correct on secondary | `url` | | `global_search_bulk_cron_queue_size` | Gauge | 12.10 | Number of database records waiting to be synchronized to Elasticsearch | | +| `package_files_count` | Gauge | 13.0 | Number of package files on primary | `url` | +| `package_files_checksummed_count` | Gauge | 13.0 | Number of package files checksummed on primary | `url` | +| `package_files_checksum_failed_count` | Gauge | 13.0 | Number of package files failed to calculate the checksum on primary ## Database load balancing metrics **(PREMIUM ONLY)** @@ -168,17 +178,18 @@ The following metrics are available: Some basic Ruby runtime metrics are available: -| Metric | Type | Since | Description | -|:------------------------------------ |:--------- |:----- |:----------- | -| `ruby_gc_duration_seconds` | Counter | 11.1 | Time spent by Ruby in GC | -| `ruby_gc_stat_...` | Gauge | 11.1 | Various metrics from [GC.stat](https://ruby-doc.org/core-2.6.5/GC.html#method-c-stat) | -| `ruby_file_descriptors` | Gauge | 11.1 | File descriptors per process | -| `ruby_memory_bytes` | Gauge | 11.1 | Memory usage by process | -| `ruby_sampler_duration_seconds` | Counter | 11.1 | Time spent collecting stats | -| `ruby_process_cpu_seconds_total` | Gauge | 12.0 | Total amount of CPU time per process | -| `ruby_process_max_fds` | Gauge | 12.0 | Maximum number of open file descriptors per process | -| `ruby_process_resident_memory_bytes` | Gauge | 12.0 | Memory usage by process | -| `ruby_process_start_time_seconds` | Gauge | 12.0 | UNIX timestamp of process start time | +| Metric | Type | Since | Description | +|:---------------------------------------- |:--------- |:----- |:----------- | +| `ruby_gc_duration_seconds` | Counter | 11.1 | Time spent by Ruby in GC | +| `ruby_gc_stat_...` | Gauge | 11.1 | Various metrics from [GC.stat](https://ruby-doc.org/core-2.6.5/GC.html#method-c-stat) | +| `ruby_file_descriptors` | Gauge | 11.1 | File descriptors per process | +| `ruby_sampler_duration_seconds` | Counter | 11.1 | Time spent collecting stats | +| `ruby_process_cpu_seconds_total` | Gauge | 12.0 | Total amount of CPU time per process | +| `ruby_process_max_fds` | Gauge | 12.0 | Maximum number of open file descriptors per process | +| `ruby_process_resident_memory_bytes` | Gauge | 12.0 | Memory usage by process (RSS/Resident Set Size) | +| `ruby_process_unique_memory_bytes` | Gauge | 13.0 | Memory usage by process (USS/Unique Set Size) | +| `ruby_process_proportional_memory_bytes` | Gauge | 13.0 | Memory usage by process (PSS/Proportional Set Size) | +| `ruby_process_start_time_seconds` | Gauge | 12.0 | UNIX timestamp of process start time | ## Unicorn Metrics |