wu-sheng commented on code in PR #12671:
URL: https://github.com/apache/skywalking/pull/12671#discussion_r1824547585
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docs/en/setup/backend/backend-async-profiler.md:
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@@ -0,0 +1,85 @@
+`# Async Profiler
+
+Async Profiler is bound within the auto-instrument agent and corresponds to
[In-Process
Profiling](../../concepts-and-designs/profiling.md#in-process-profiling).
+
+It is passed to the proxy in the form of a task, allowing it to be enabled or
disabled dynamically.
+When service encounters performance issues (cpu usage, memory allocation,
locks), async-profiler task can be created.
+When the proxy receives a task, it enables Async Profiler for sampling.
+After sampling is completed, a flame graph will be generated for performance
analysis to determine the specific business code line that caused the
performance problem.
+
+## Active in the OAP
+OAP and the agent use a brand-new protocol to exchange Async Profiler data, so
it is necessary to start OAP with the following configuration:
+
+```yaml
+receiver-async-profiler:
+ selector: ${SW_RECEIVER_ASYNC_PROFILER:default}
+ default:
+```
+
+## Async Profiler Task with Analysis
+
+To use the Async Profiler feature, please follow these steps:
+
+1. **Create Async Profiler task**: Use the UI or CLI tool to create a task.
+2. **Wait agent collect data and upload**: Wait for Async Profiler to collect
JFR data and report
+3. **Query task progress**: Query the progress of tasks, including analyzing
successful and failed instances and task logs
+4. **Analyze the data**: Analyze the JFR data to determine where performance
bottlenecks exist in the service.
+
+### Create Async Profiler task
Review Comment:
```suggestion
### Create an Async Profiler task
```
##########
docs/en/setup/backend/backend-async-profiler.md:
##########
@@ -0,0 +1,85 @@
+`# Async Profiler
Review Comment:
```suggestion
# Async Profiler
```
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