Document presets for performance tuning to ES output (#749)

* Document presets for performance tuning to ES output

* Typo and link fix

* Address review comments

(cherry picked from commit ffd8a6d)

docs/en/ingest-management/fleet/fleet-settings-output-elasticsearch.asciidoc

@@ -81,6 +81,16 @@ output is set in the <<agent-policy,agent policy>>.
 | When this setting is on, {agent}s use this output to send <<monitor-elastic-agent,agent monitoring data>> if no other output is set in the <<agent-policy,agent policy>>.
 
 Sending monitoring data to a remote {es} cluster is currently not supported.
+
+// =============================================================================
+
+|
+[id="es-agent-performance-tuning"]
+**Performance tuning**
+
+| Choose one of the menu options to tune your {agent} performance when sending data to an {es} output. You can optimize for throughput, scale, latency, or you can choose a balanced (the default) set of performance specifications. Refer to <<es-output-settings-performance-tuning-settings,Performance tuning settings>> for details about the setting values and their potential impact on performance.
+
+You can also use the <<es-output-settings-yaml-config,Advanced YAML configuration>> field to set custom values. Note that if you adjust any of the performance settings described in the following **Advanced YAML configuration** section, the **Performance tuning** option automatically changes to `Custom` and cannot be changed.
 |===
 
 [[es-output-settings-yaml-config]]
@@ -118,4 +128,100 @@ include::../elastic-agent/configuration/outputs/output-shared-settings.asciidoc[
 
 |===
 
+
+[[es-output-settings-performance-tuning-settings]]
+== Performance tuning settings
+
+.Performance tuning preset values
+[cols="1,1,1,1,1"]
+|===
+|Configuration |Balanced|Optimized for Throughput |Optimized for Scale |Optimized for Latency
+
+|`bulk_max_size`
+|1600
+|1600
+|1600
+|50
+
+|`worker`
+|1
+|4
+|1
+|1
+
+|`queue.mem.events`
+|3200
+|12800
+|3200
+|4100
+
+|`flush.min_events`
+|1600
+|1600
+|1600
+|2050
+
+|`flush.timeout`
+|10
+|5
+|20
+|1
+
+|`compression`
+|1
+|1
+|1
+|1
+
+|`idle_timeout`
+|3
+|15
+|1
+|60
+|===
+
+For descriptions of each setting, refer to <<es-output-settings-yaml-config,Advanced YAML configuration>>. For the  `queue.mem.events`, `flush.min_events` and `flush.timeout` settings, refer to the {filebeat-ref}/configuring-internal-queue.html[internal queue configuration settings] in the {filebeat} documentation.
+
+.Potential performance effect
+[cols="1,1,1,1,1"]
+|===
+|Configuration |Balanced|Optimized for Throughput |Optimized for Scale |Optimized for Latency
+
+|Stateful throughput
+|3x
+|5x
+|3x
+|1x
+
+|Serverless throughput
+|5-10x
+|10-20x
+|5-10x
+|1x
+
+|Connections
+|0.3x
+|4x
+|0.04x
+|1x
+
+|Network traffic
+|0.1x
+|0.1x
+|0.05x
+|0.1x
+
+|High-throughput queue latency
+|1x
+|1x
+|1x
+|1x
+
+|Low-throughput queue latency
+|10x
+|5x
+|20x
+|1x
+|===
+
 :type!: