[Doc] Add a new metric for managed-ledger add latency (#14414)

apache · Feb 28, 2022 · 4532c15 · 4532c15
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diff --git a/site2/docs/reference-metrics.md b/site2/docs/reference-metrics.md
@@ -274,14 +274,16 @@ All the managedLedger metrics are labelled with the following labels:
 | pulsar_ml_AddEntryBytesRate | Gauge | The bytes/s rate of messages added |
 | pulsar_ml_AddEntryWithReplicasBytesRate | Gauge | The bytes/s rate of messages added with replicas |
 | pulsar_ml_AddEntryErrors | Gauge | The number of addEntry requests that failed |
-| pulsar_ml_AddEntryLatencyBuckets | Histogram | The add entry latency of a ledger with a given quantile (threshold).<br> Available quantile: <br><ul><li> quantile="0.0_0.5" is AddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is AddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is AddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is AddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is AddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is AddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is AddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is AddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is AddEntryLatency between (200ms, 1s]</li></ul>|
-| pulsar_ml_AddEntryLatencyBuckets_OVERFLOW | Gauge | The add entry latency > 1s |
+| pulsar_ml_AddEntryLatencyBuckets | Histogram | The latency of adding a ledger entry with a given quantile (threshold), including time spent on waiting in queue on the broker side.<br> Available quantile: <br><ul><li> quantile="0.0_0.5" is AddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is AddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is AddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is AddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is AddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is AddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is AddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is AddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is AddEntryLatency between (200ms, 1s]</li></ul>|
+| pulsar_ml_AddEntryLatencyBuckets_OVERFLOW | Gauge | The number of times the AddEntryLatency is longer than 1 second |
 | pulsar_ml_AddEntryMessagesRate | Gauge | The msg/s rate of messages added |
 | pulsar_ml_AddEntrySucceed | Gauge | The number of addEntry requests that succeeded |
-| pulsar_ml_EntrySizeBuckets | Histogram | The add entry size of a ledger with given quantile.<br> Available quantile: <br><ul><li>quantile="0.0_128.0" is EntrySize between (0byte, 128byte]</li><li>quantile="128.0_512.0" is EntrySize between (128byte, 512byte]</li><li>quantile="512.0_1024.0" is EntrySize between (512byte, 1KB]</li><li>quantile="1024.0_2048.0" is EntrySize between (1KB, 2KB]</li><li>quantile="2048.0_4096.0" is EntrySize between (2KB, 4KB]</li><li>quantile="4096.0_16384.0" is EntrySize between (4KB, 16KB]</li><li>quantile="16384.0_102400.0" is EntrySize between (16KB, 100KB]</li><li>quantile="102400.0_1232896.0" is EntrySize between (100KB, 1MB]</li></ul> |
-| pulsar_ml_EntrySizeBuckets_OVERFLOW |Gauge  | The add entry size > 1MB |
-| pulsar_ml_LedgerSwitchLatencyBuckets | Histogram | The ledger switch latency with given quantile. <br> Available quantile: <br><ul><li>quantile="0.0_0.5" is EntrySize between (0ms, 0.5ms]</li><li>quantile="0.5_1.0" is EntrySize between (0.5ms, 1ms]</li><li>quantile="1.0_5.0" is EntrySize between (1ms, 5ms]</li><li>quantile="5.0_10.0" is EntrySize between (5ms, 10ms]</li><li>quantile="10.0_20.0" is EntrySize between (10ms, 20ms]</li><li>quantile="20.0_50.0" is EntrySize between (20ms, 50ms]</li><li>quantile="50.0_100.0" is EntrySize between (50ms, 100ms]</li><li>quantile="100.0_200.0" is EntrySize between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is EntrySize between (200ms, 1000ms]</li></ul> |
-| pulsar_ml_LedgerSwitchLatencyBuckets_OVERFLOW | Gauge | The ledger switch latency > 1s |
+| pulsar_ml_EntrySizeBuckets | Histogram | The added entry size of a ledger with a given quantile.<br> Available quantile: <br><ul><li>quantile="0.0_128.0" is EntrySize between (0byte, 128byte]</li><li>quantile="128.0_512.0" is EntrySize between (128byte, 512byte]</li><li>quantile="512.0_1024.0" is EntrySize between (512byte, 1KB]</li><li>quantile="1024.0_2048.0" is EntrySize between (1KB, 2KB]</li><li>quantile="2048.0_4096.0" is EntrySize between (2KB, 4KB]</li><li>quantile="4096.0_16384.0" is EntrySize between (4KB, 16KB]</li><li>quantile="16384.0_102400.0" is EntrySize between (16KB, 100KB]</li><li>quantile="102400.0_1232896.0" is EntrySize between (100KB, 1MB]</li></ul> |
+| pulsar_ml_EntrySizeBuckets_OVERFLOW |Gauge  | The number of times the EntrySize is larger than 1MB |
+| pulsar_ml_LedgerSwitchLatencyBuckets | Histogram | The ledger switch latency with a given quantile. <br> Available quantile: <br><ul><li>quantile="0.0_0.5" is EntrySize between (0ms, 0.5ms]</li><li>quantile="0.5_1.0" is EntrySize between (0.5ms, 1ms]</li><li>quantile="1.0_5.0" is EntrySize between (1ms, 5ms]</li><li>quantile="5.0_10.0" is EntrySize between (5ms, 10ms]</li><li>quantile="10.0_20.0" is EntrySize between (10ms, 20ms]</li><li>quantile="20.0_50.0" is EntrySize between (20ms, 50ms]</li><li>quantile="50.0_100.0" is EntrySize between (50ms, 100ms]</li><li>quantile="100.0_200.0" is EntrySize between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is EntrySize between (200ms, 1000ms]</li></ul> |
+| pulsar_ml_LedgerSwitchLatencyBuckets_OVERFLOW | Gauge | The number of times the ledger switch latency is longer than 1 second |
+| pulsar_ml_LedgerAddEntryLatencyBuckets | Histogram | The latency for bookie client to persist a ledger entry from broker to BookKeeper service with a given quantile (threshold). <br /> Available quantile: <br /><ul><li> quantile="0.0_0.5" is LedgerAddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is LedgerAddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is LedgerAddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is LedgerAddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is LedgerAddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is LedgerAddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is LedgerAddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is LedgerAddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is LedgerAddEntryLatency between (200ms, 1s]</li></ul>|
+| pulsar_ml_LedgerAddEntryLatencyBuckets_OVERFLOW | Gauge | The number of times the LedgerAddEntryLatency is longer than 1 second |
 | pulsar_ml_MarkDeleteRate | Gauge | The rate of mark-delete ops/s |
 | pulsar_ml_NumberOfMessagesInBacklog | Gauge | The number of backlog messages for all the consumers |
 | pulsar_ml_ReadEntriesBytesRate | Gauge | The bytes/s rate of messages read |

diff --git a/site2/website/versioned_docs/version-2.7.0/reference-metrics.md b/site2/website/versioned_docs/version-2.7.0/reference-metrics.md
@@ -230,14 +230,16 @@ All the managedLedger metrics are labelled with the following labels:
 | --- | --- | --- |
 | pulsar_ml_AddEntryBytesRate | Gauge | The bytes/s rate of messages added |
 | pulsar_ml_AddEntryErrors | Gauge | The number of addEntry requests that failed |
-| pulsar_ml_AddEntryLatencyBuckets | Histogram | The add entry latency of a ledger with a given quantile (threshold).<br> Available quantile: <br><ul><li> quantile="0.0_0.5" is AddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is AddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is AddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is AddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is AddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is AddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is AddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is AddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is AddEntryLatency between (200ms, 1s]</li></ul>|
-| pulsar_ml_AddEntryLatencyBuckets_OVERFLOW | Gauge | The add entry latency > 1s |
+| pulsar_ml_AddEntryLatencyBuckets | Histogram | The latency of adding a ledger entry with a given quantile (threshold), including time spent on waiting in queue on the broker side<br> Available quantile: <br><ul><li> quantile="0.0_0.5" is AddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is AddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is AddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is AddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is AddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is AddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is AddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is AddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is AddEntryLatency between (200ms, 1s]</li></ul>|
+| pulsar_ml_AddEntryLatencyBuckets_OVERFLOW | Gauge | The number of times the AddEntryLatency is longer than 1 second |
 | pulsar_ml_AddEntryMessagesRate | Gauge | The msg/s rate of messages added |
 | pulsar_ml_AddEntrySucceed | Gauge | The number of addEntry requests that succeeded |
-| pulsar_ml_EntrySizeBuckets | Histogram | The add entry size of a ledger with given quantile.<br> Available quantile: <br><ul><li>quantile="0.0_128.0" is EntrySize between (0byte, 128byte]</li><li>quantile="128.0_512.0" is EntrySize between (128byte, 512byte]</li><li>quantile="512.0_1024.0" is EntrySize between (512byte, 1KB]</li><li>quantile="1024.0_2048.0" is EntrySize between (1KB, 2KB]</li><li>quantile="2048.0_4096.0" is EntrySize between (2KB, 4KB]</li><li>quantile="4096.0_16384.0" is EntrySize between (4KB, 16KB]</li><li>quantile="16384.0_102400.0" is EntrySize between (16KB, 100KB]</li><li>quantile="102400.0_1232896.0" is EntrySize between (100KB, 1MB]</li></ul> |
-| pulsar_ml_EntrySizeBuckets_OVERFLOW |Gauge  | The add entry size > 1MB |
-| pulsar_ml_LedgerSwitchLatencyBuckets | Histogram | The ledger switch latency with given quantile. <br> Available quantile: <br><ul><li>quantile="0.0_0.5" is EntrySize between (0ms, 0.5ms]</li><li>quantile="0.5_1.0" is EntrySize between (0.5ms, 1ms]</li><li>quantile="1.0_5.0" is EntrySize between (1ms, 5ms]</li><li>quantile="5.0_10.0" is EntrySize between (5ms, 10ms]</li><li>quantile="10.0_20.0" is EntrySize between (10ms, 20ms]</li><li>quantile="20.0_50.0" is EntrySize between (20ms, 50ms]</li><li>quantile="50.0_100.0" is EntrySize between (50ms, 100ms]</li><li>quantile="100.0_200.0" is EntrySize between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is EntrySize between (200ms, 1000ms]</li></ul> |
-| pulsar_ml_LedgerSwitchLatencyBuckets_OVERFLOW | Gauge | The ledger switch latency > 1s |
+| pulsar_ml_EntrySizeBuckets | Histogram | The added entry size of a ledger with a given quantile.<br> Available quantile: <br><ul><li>quantile="0.0_128.0" is EntrySize between (0byte, 128byte]</li><li>quantile="128.0_512.0" is EntrySize between (128byte, 512byte]</li><li>quantile="512.0_1024.0" is EntrySize between (512byte, 1KB]</li><li>quantile="1024.0_2048.0" is EntrySize between (1KB, 2KB]</li><li>quantile="2048.0_4096.0" is EntrySize between (2KB, 4KB]</li><li>quantile="4096.0_16384.0" is EntrySize between (4KB, 16KB]</li><li>quantile="16384.0_102400.0" is EntrySize between (16KB, 100KB]</li><li>quantile="102400.0_1232896.0" is EntrySize between (100KB, 1MB]</li></ul> |
+| pulsar_ml_EntrySizeBuckets_OVERFLOW |Gauge  | The number of times the EntrySize is larger than 1MB |
+| pulsar_ml_LedgerSwitchLatencyBuckets | Histogram | The ledger switch latency with a given quantile. <br> Available quantile: <br><ul><li>quantile="0.0_0.5" is EntrySize between (0ms, 0.5ms]</li><li>quantile="0.5_1.0" is EntrySize between (0.5ms, 1ms]</li><li>quantile="1.0_5.0" is EntrySize between (1ms, 5ms]</li><li>quantile="5.0_10.0" is EntrySize between (5ms, 10ms]</li><li>quantile="10.0_20.0" is EntrySize between (10ms, 20ms]</li><li>quantile="20.0_50.0" is EntrySize between (20ms, 50ms]</li><li>quantile="50.0_100.0" is EntrySize between (50ms, 100ms]</li><li>quantile="100.0_200.0" is EntrySize between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is EntrySize between (200ms, 1000ms]</li></ul> |
+| pulsar_ml_LedgerSwitchLatencyBuckets_OVERFLOW | Gauge | The number of times the ledger switch latency is longer than 1 second |
+| pulsar_ml_LedgerAddEntryLatencyBuckets | Histogram | The latency for bookie client to persist a ledger entry from broker to BookKeeper service with a given quantile (threshold). <br /> Available quantile: <br /><ul><li> quantile="0.0_0.5" is LedgerAddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is LedgerAddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is LedgerAddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is LedgerAddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is LedgerAddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is LedgerAddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is LedgerAddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is LedgerAddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is LedgerAddEntryLatency between (200ms, 1s]</li></ul>|
+| pulsar_ml_LedgerAddEntryLatencyBuckets_OVERFLOW | Gauge | The number of times the LedgerAddEntryLatency is longer than 1 second |
 | pulsar_ml_MarkDeleteRate | Gauge | The rate of mark-delete ops/s |
 | pulsar_ml_NumberOfMessagesInBacklog | Gauge | The number of backlog messages for all the consumers |
 | pulsar_ml_ReadEntriesBytesRate | Gauge | The bytes/s rate of messages read |

diff --git a/site2/website/versioned_docs/version-2.7.1/reference-metrics.md b/site2/website/versioned_docs/version-2.7.1/reference-metrics.md
@@ -232,14 +232,16 @@ All the managedLedger metrics are labelled with the following labels:
 | --- | --- | --- |
 | pulsar_ml_AddEntryBytesRate | Gauge | The bytes/s rate of messages added |
 | pulsar_ml_AddEntryErrors | Gauge | The number of addEntry requests that failed |
-| pulsar_ml_AddEntryLatencyBuckets | Histogram | The add entry latency of a ledger with a given quantile (threshold).<br> Available quantile: <br><ul><li> quantile="0.0_0.5" is AddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is AddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is AddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is AddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is AddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is AddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is AddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is AddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is AddEntryLatency between (200ms, 1s]</li></ul>|
-| pulsar_ml_AddEntryLatencyBuckets_OVERFLOW | Gauge | The add entry latency > 1s |
+| pulsar_ml_AddEntryLatencyBuckets | Histogram | The latency of adding a ledger entry with a given quantile (threshold), including time spent on waiting in queue on the broker side<br> Available quantile: <br><ul><li> quantile="0.0_0.5" is AddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is AddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is AddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is AddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is AddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is AddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is AddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is AddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is AddEntryLatency between (200ms, 1s]</li></ul>|
+| pulsar_ml_AddEntryLatencyBuckets_OVERFLOW | Gauge | The number of times the AddEntryLatency is longer than 1 second |
 | pulsar_ml_AddEntryMessagesRate | Gauge | The msg/s rate of messages added |
 | pulsar_ml_AddEntrySucceed | Gauge | The number of addEntry requests that succeeded |
-| pulsar_ml_EntrySizeBuckets | Histogram | The add entry size of a ledger with given quantile.<br> Available quantile: <br><ul><li>quantile="0.0_128.0" is EntrySize between (0byte, 128byte]</li><li>quantile="128.0_512.0" is EntrySize between (128byte, 512byte]</li><li>quantile="512.0_1024.0" is EntrySize between (512byte, 1KB]</li><li>quantile="1024.0_2048.0" is EntrySize between (1KB, 2KB]</li><li>quantile="2048.0_4096.0" is EntrySize between (2KB, 4KB]</li><li>quantile="4096.0_16384.0" is EntrySize between (4KB, 16KB]</li><li>quantile="16384.0_102400.0" is EntrySize between (16KB, 100KB]</li><li>quantile="102400.0_1232896.0" is EntrySize between (100KB, 1MB]</li></ul> |
-| pulsar_ml_EntrySizeBuckets_OVERFLOW |Gauge  | The add entry size > 1MB |
-| pulsar_ml_LedgerSwitchLatencyBuckets | Histogram | The ledger switch latency with given quantile. <br> Available quantile: <br><ul><li>quantile="0.0_0.5" is EntrySize between (0ms, 0.5ms]</li><li>quantile="0.5_1.0" is EntrySize between (0.5ms, 1ms]</li><li>quantile="1.0_5.0" is EntrySize between (1ms, 5ms]</li><li>quantile="5.0_10.0" is EntrySize between (5ms, 10ms]</li><li>quantile="10.0_20.0" is EntrySize between (10ms, 20ms]</li><li>quantile="20.0_50.0" is EntrySize between (20ms, 50ms]</li><li>quantile="50.0_100.0" is EntrySize between (50ms, 100ms]</li><li>quantile="100.0_200.0" is EntrySize between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is EntrySize between (200ms, 1000ms]</li></ul> |
-| pulsar_ml_LedgerSwitchLatencyBuckets_OVERFLOW | Gauge | The ledger switch latency > 1s |
+| pulsar_ml_EntrySizeBuckets | Histogram | The added entry size of a ledger with a given quantile.<br> Available quantile: <br><ul><li>quantile="0.0_128.0" is EntrySize between (0byte, 128byte]</li><li>quantile="128.0_512.0" is EntrySize between (128byte, 512byte]</li><li>quantile="512.0_1024.0" is EntrySize between (512byte, 1KB]</li><li>quantile="1024.0_2048.0" is EntrySize between (1KB, 2KB]</li><li>quantile="2048.0_4096.0" is EntrySize between (2KB, 4KB]</li><li>quantile="4096.0_16384.0" is EntrySize between (4KB, 16KB]</li><li>quantile="16384.0_102400.0" is EntrySize between (16KB, 100KB]</li><li>quantile="102400.0_1232896.0" is EntrySize between (100KB, 1MB]</li></ul> |
+| pulsar_ml_EntrySizeBuckets_OVERFLOW |Gauge  | The number of times the EntrySize is larger than 1MB |
+| pulsar_ml_LedgerSwitchLatencyBuckets | Histogram | The ledger switch latency with a given quantile. <br> Available quantile: <br><ul><li>quantile="0.0_0.5" is EntrySize between (0ms, 0.5ms]</li><li>quantile="0.5_1.0" is EntrySize between (0.5ms, 1ms]</li><li>quantile="1.0_5.0" is EntrySize between (1ms, 5ms]</li><li>quantile="5.0_10.0" is EntrySize between (5ms, 10ms]</li><li>quantile="10.0_20.0" is EntrySize between (10ms, 20ms]</li><li>quantile="20.0_50.0" is EntrySize between (20ms, 50ms]</li><li>quantile="50.0_100.0" is EntrySize between (50ms, 100ms]</li><li>quantile="100.0_200.0" is EntrySize between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is EntrySize between (200ms, 1000ms]</li></ul> |
+| pulsar_ml_LedgerSwitchLatencyBuckets_OVERFLOW | Gauge | The number of times the ledger switch latency is longer than 1 second |
+| pulsar_ml_LedgerAddEntryLatencyBuckets | Histogram | The latency for bookie client to persist a ledger entry from broker to BookKeeper service with a given quantile (threshold). <br /> Available quantile: <br /><ul><li> quantile="0.0_0.5" is LedgerAddEntryLatency between (0.0ms, 0.5ms]</li> <li>quantile="0.5_1.0" is LedgerAddEntryLatency between (0.5ms, 1.0ms]</li><li>quantile="1.0_5.0" is LedgerAddEntryLatency between (1ms, 5ms]</li><li>quantile="5.0_10.0" is LedgerAddEntryLatency between (5ms, 10ms]</li><li>quantile="10.0_20.0" is LedgerAddEntryLatency between (10ms, 20ms]</li><li>quantile="20.0_50.0" is LedgerAddEntryLatency between (20ms, 50ms]</li><li>quantile="50.0_100.0" is LedgerAddEntryLatency between (50ms, 100ms]</li><li>quantile="100.0_200.0" is LedgerAddEntryLatency between (100ms, 200ms]</li><li>quantile="200.0_1000.0" is LedgerAddEntryLatency between (200ms, 1s]</li></ul>|
+| pulsar_ml_LedgerAddEntryLatencyBuckets_OVERFLOW | Gauge | The number of times the LedgerAddEntryLatency is longer than 1 second |
 | pulsar_ml_MarkDeleteRate | Gauge | The rate of mark-delete ops/s |
 | pulsar_ml_NumberOfMessagesInBacklog | Gauge | The number of backlog messages for all the consumers |
 | pulsar_ml_ReadEntriesBytesRate | Gauge | The bytes/s rate of messages read |