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new a4cd1dd759b docs: add publish latency, ml write latency, and ml entry
size as otel histogram metrics (#1042)
a4cd1dd759b is described below
commit a4cd1dd759bf9c717d6f02d6410362409a7fe107
Author: Yuri Mizushima <[email protected]>
AuthorDate: Mon Oct 13 17:10:52 2025 +0900
docs: add publish latency, ml write latency, and ml entry size as otel
histogram metrics (#1042)
---
docs/reference-metrics-opentelemetry.md | 33 ++++++++++++++++++++++
.../reference-metrics-opentelemetry.md | 33 ++++++++++++++++++++++
2 files changed, 66 insertions(+)
diff --git a/docs/reference-metrics-opentelemetry.md
b/docs/reference-metrics-opentelemetry.md
index d920eae5e4a..57ad5fca74d 100644
--- a/docs/reference-metrics-opentelemetry.md
+++ b/docs/reference-metrics-opentelemetry.md
@@ -133,6 +133,11 @@ The total number of messages bytes read from this topic.
* `pulsar.topic` - The topic name.
* `pulsar.partition.index` - The partition index of the topic. Present only
if the topic is partitioned.
+#### pulsar.broker.topic.publish.latency
+The latency in seconds for publishing messages.
+* Type: Histogram
+* Unit: `s`
+
#### pulsar.broker.topic.publish.rate.limit.count
The number of times the publish rate limit is triggered.
* Type: Counter
@@ -822,6 +827,34 @@ The total number of mark delete operations for this ledger.
* `pulsar.namespace` - The managed ledger namespace.
* `pulsar.managed_ledger.name` - The name of the managed ledger.
+#### pulsar.broker.managed_ledger.message.outgoing.latency
+End-to-end write latency, including time spent in the executor queue.
+* Type: Histogram
+* Unit: `s`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
+#### pulsar.broker.managed_ledger.message.outgoing.ledger.latency
+End-to end write latency.
+* Type: Histogram
+* Unit: `s`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
+#### pulsar.broker.managed_ledger.ledger.switch.latency
+Time taken to switch to a new ledger.
+* Type: Histogram
+* Unit: `s`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
+#### pulsar.broker.managed_ledger.entry.size
+Size of entries written to the ledger.
+* Type: Histogram
+* Unit: `By`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
#### pulsar.broker.managed_ledger.inflight.read.limit
Maximum number of bytes that can be retained by managed ledger data read from
storage or cache.
* Type: Counter
diff --git a/versioned_docs/version-4.1.x/reference-metrics-opentelemetry.md
b/versioned_docs/version-4.1.x/reference-metrics-opentelemetry.md
index 74950473d9f..7e346358a23 100644
--- a/versioned_docs/version-4.1.x/reference-metrics-opentelemetry.md
+++ b/versioned_docs/version-4.1.x/reference-metrics-opentelemetry.md
@@ -133,6 +133,11 @@ The total number of messages bytes read from this topic.
* `pulsar.topic` - The topic name.
* `pulsar.partition.index` - The partition index of the topic. Present only
if the topic is partitioned.
+#### pulsar.broker.topic.publish.latency
+The latency in seconds for publishing messages.
+* Type: Histogram
+* Unit: `s`
+
#### pulsar.broker.topic.publish.rate.limit.count
The number of times the publish rate limit is triggered.
* Type: Counter
@@ -822,6 +827,34 @@ The total number of mark delete operations for this ledger.
* `pulsar.namespace` - The managed ledger namespace.
* `pulsar.managed_ledger.name` - The name of the managed ledger.
+#### pulsar.broker.managed_ledger.message.outgoing.latency
+End-to-end write latency, including time spent in the executor queue.
+* Type: Histogram
+* Unit: `s`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
+#### pulsar.broker.managed_ledger.message.outgoing.ledger.latency
+End-to end write latency.
+* Type: Histogram
+* Unit: `s`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
+#### pulsar.broker.managed_ledger.ledger.switch.latency
+Time taken to switch to a new ledger.
+* Type: Histogram
+* Unit: `s`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
+#### pulsar.broker.managed_ledger.entry.size
+Size of entries written to the ledger.
+* Type: Histogram
+* Unit: `By`
+* Attributes:
+ * `pulsar.namespace` - The managed ledger namespace.
+
#### pulsar.broker.managed_ledger.inflight.read.limit
Maximum number of bytes that can be retained by managed ledger data read from
storage or cache.
* Type: Counter
