# Metrics ## Alluxio Metrics ### Cache Storage | Metric | Labels | Type | Component | Description | | ----------------------------------------- | ------ | ------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `alluxio_cached_storage_bytes` | - | gauge | worker | amount of the cached data | | `alluxio_cached_capacity_bytes` | - | gauge | worker | configured maximum cache storage | | `alluxio_cached_evicted_data_bytes_total` | - | counter | worker | amount of the evicted data | | `alluxio_data_cached_files` | - | gauge | worker | number of files that are currently cached, both fully or partially, in a worker. Note that summing this metric over multiple workers in a cluster does not produce a total number of unique files cached, as files may be replicated on multiple workers. | | `alluxio_data_cached_pages` | - | gauge | worker | number of pages being cached in a worker | ### Data Access | Metric | Labels | Type | Component | Description | | ------------------------------------------ | -------------------------------------- | --------- | ------------ | -------------------------------------------------------------------------------------- | | `alluxio_data_access_bytes` | `method=read/write` | histogram | fuse, worker | aggregated all data access requests | | `alluxio_data_throughput_bytes_total` | `method=read/write` | counter | worker | counter of data throughput of all data access | | `alluxio_meta_operation_total` | `op=getStatus/listStatus/...` | counter | worker | counter of rpc calls of the meta operations | | `alluxio_cached_data_read_bytes_total` | - | counter | worker | number of cache hits in page store | | `alluxio_missed_data_read_bytes_total` | - | counter | worker | number of cache misses in page store | | `alluxio_ufs_data_access_bytes_total` | `method=read/write` | counter | fuse, worker | amount of the ufs access | | `alluxio_fuse_concurrency` | `method=Fuse.Getattr/Fuse.readdir/...` | gauge | fuse | record the realtime concurrency for fuse method | | `alluxio_s3_api_throughput_bytes` | `method=read/write/list` | histogram | fuse, worker | histogram of s3 IO API throughput | | `alluxio_s3_api_call_processing` | `method=GetObject/ListObjects/...` | gauge | fuse, worker | counter of the s3 API calls that are being processed | | `alluxio_multi_replica_read_from_workers` | `cluster_name,local_cluster,hot_read` | counter | client | number of bytes read by a client from Alluxio workers when reading multi-replica files | | `alluxio_passive_cache_async_loaded_files` | `result=submitted/success/failure` | counter | worker | number of files that are loaded by a worker triggered by passive cache | ### Distributed Load | Metric | Labels | Type | Component | Description | | ---------------------------------------------------- | ------------------------------- | ------- | ----------- | --------------------------------------------------------------- | | `alluxio_distributed_load_job_scanned_total` | - | counter | coordinator | counter of the inodes scanned in distributed load | | `alluxio_distributed_load_job_processed_total` | - | counter | coordinator | counter of the non empty file copies loaded in distributed load | | `alluxio_distributed_load_job_skipped_total` | - | counter | coordinator | counter of the inodes skipped in distributed load | | `alluxio_distributed_load_job_failure_total` | `reason, final_attempt, worker` | counter | coordinator | counter of the distributed load failure | | `alluxio_distributed_load_job_dispatched_size_total` | - | counter | coordinator | counter of the bytes dispatched in distributed load | | `alluxio_distributed_load_job_loaded_bytes_total` | - | counter | coordinator | counter of the bytes loaded in distributed load | ### License | Metric | Labels | Type | Description | | --------------------------------- | ------ | ----- | ------------------------------------------------ | | `alluxio_license_expiration_date` | - | gauge | the license expiration date in epoch time format | ## Process and JVM Metrics | Metric | Labels | Type | Description | | ---------------------------- | -------------------------------------------------- | ------- | ------------------------------------------------------ | | `process_start_time_seconds` | - | gauge | start time of the process since unix epoch in seconds | | `process_cpu_seconds_total` | - | counter | total user and system CPU time spent in seconds | | `jvm_threads_current` | - | gauge | current thread count of a JVM | | `jvm_memory_used_bytes` | `area=heap/nonheap` | gauge | used bytes of a given JVM memory area | | `jvm_memory_max_bytes` | `area=heap/nonheap` | gauge | max (bytes) of a given JVM memory area | | `jvm_gc_collection_seconds` | `gc="G1 Young Generation"/"G1 Old Generation"/...` | summary | time spent in a given JVM garbage collector in seconds | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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