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  1. The Datomic Pro peer can create the following CloudWatch metrics:
  2.  
  3.  
  4. -----------------------------------PEER METRICS
  5.  
  6.  
  7. |-------------------------------+------------+---------------+-----------------------------------------------------------------------------+
  8. | Metric | Units | Statistic | Description |
  9. |-------------------------------+------------+---------------+-----------------------------------------------------------------------------+
  10. | AvailableMB | MB | minimum | unused RAM on peer * |
  11. | dbAddFulltextMsec | msec | min, avg, max | Time to add batch of fulltext attributes to index |
  12. | LogIngestBytes | bytes | sum | Sum of bytes ingested by peer process |
  13. | LogIngestMsec | msec | min, avg, max | time to ingest log by peer |
  14. | ObjectCache | count | average | object cache hit ratio, from 0 (no hits) to 1 (all hits) |
  15. | ObjectCache | count | sum | total number of requests to object cache |
  16. | PeerAcceptNewMsec | msec | min, avg, max | Time for the peer to accept a new index |
  17. | PeerFulltextBatch | count | min, avg, max | Attributes with fulltext in the current batch |
  18. | PodGetMsec | msec | min, avg, max | ??? * |
  19. | StorageGetBytes | bytes | sum | total number of bytes retrieved from storage |
  20. | StorageGetMsec | msec | min, avg, max | Time to retrieve bytes from storage |
  21. |-------------------------------+------------+---------------+-----------------------------------------------------------------------------+---|
  22.  
  23.  
  24. -------------Currently shown metrics:
  25.  
  26.  
  27. |-------------------------------+------------+---------------+-----------------------------------------------------------------------------+
  28. | Metric | Units | Statistic | Description |
  29. |-------------------------------+------------+---------------+-----------------------------------------------------------------------------+
  30. | Alarm | count | sum | a problem has occurred (see alarms table below) |
  31. | AvailableMB | MB | minimum | unused RAM on transactor |
  32. | ClusterCreateFS | msec | maximum | time to create a "file system" in the storage |
  33. | CreateEntireIndexMsec | msec | maximum | time to create index, reported at end of indexing job |
  34. | CreateFulltextIndexMsec | msec | maximum | time to create fulltext portion of index |
  35. | Datoms | count | maximum | number of unique datoms in the index |
  36. | HeartbeatMsec | msec | avg | Time spacing of heartbeats written by active transactor |
  37. | HeartbeatMsec | msec | samples | Number of heartbeats written by active transactor |
  38. | HeartbeatMsec | msec | maximum | Longest spacing between heartbeats written by active transactor |
  39. | HeartMonitorMsec | msec | min, avg, max | Time spacing of heartbeats observed by standby transactor |
  40. | IndexDatoms | count | maximum | number of datoms stored by the index, all sorts |
  41. | IndexSegments | count | maximum | total number of segments in the index |
  42. | IndexWrites | count | sum | number of segments written by indexing job, reported at end |
  43. | LogIngestBytes | bytes | maximum | in-memory size of log when a database size |
  44. | LogIngestMsec | msec | maximum | time to play log back when a database start |
  45. | Memcache | count | average | memcache hit ratio, from 0 (no hits) to 1 (all hits) |
  46. | Memcache | count | sum | total number of cache hits for memcache |
  47. | Memcache | count | samples | total number of requests to memcache |
  48. | MemoryIndexMB | MB | maximum | MB of RAM consumed by memory index |
  49. | ObjectCache | count | average | object cache hit ratio, from 0 (no hits) to 1 (all hits) |
  50. | ObjectCache | count | sum | total number of requests to object cache |
  51. | ReaderMemcachedPutMusec | \micro{}sec | min, avg, max | distribution of successful memcache put latencies when reading from storage |
  52. | ReaderMemcachedPutFailedMusec | \micro{}sec | min, avg, max | distribution of failed memcache put latencies when reading from storage |
  53. | RemotePeers | count | maximum | number of remote peers connected |
  54. | StorageBackoff | msec | maximum | worst case time spent in backoff/retry around calls to storage |
  55. | StorageBackoff | msec | samples | number of times a storage operation was retried |
  56. | Storage{Get,Put}Bytes | bytes | sum | throughput of storage operations |
  57. | Storage{Get,Put}Bytes | bytes | samples | count of storage operations |
  58. | Storage{Get,Put}Msec | msec | min, avg, max | distribution of storage latencies |
  59. | TransactionBytes | bytes | sum | volume of transaction data to log, peers |
  60. | TransactionBytes | bytes | samples | number of transactions |
  61. | TransactionBytes | bytes | min, avg, max | distribution of transaction sizes |
  62. | TransactionMsec | msec | min, avg, max | distribution of transaction latencies |
  63. | WriterMemcachedPutMusec | \micro{}sec | min, avg, max | distribution of successful memcache put latencies when writing to storage |
  64. | WriterMemcachedPutFailedMusec | \micro{}sec | min, avg, max | distribution of failed memcache put latencies when writing to storage |
  65. |-------------------------------+------------+---------------+-----------------------------------------------------------------------------+---|
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