Revolyssup commented on PR #12686:
URL: https://github.com/apache/apisix/pull/12686#issuecomment-3449799354
# Benchmark
1. Add route
```jsx
apisix git:(nic/opentelemetry) ✗ curl
"<http://127.0.0.1:9180/apisix/admin/routes>" -X PUT \\
-H "X-API-KEY: ${admin_key}" \\
-d '{
"id": "otel-tracing-route",
"uri": "/headers",
"plugins": {
"opentelemetry": {
"sampler": {
"name": "always_on"
}
}
},
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:8080": 1
}
}
}'
```
## Without instrumentation
- Run wrk
```jsx
wrk -t4 -c100 -d30s http://localhost:9080/headers
Running 30s test @ http://localhost:9080/headers
4 threads and 100 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 8.26ms 9.89ms 224.12ms 93.95%
Req/Sec 3.63k 793.25 6.19k 74.06%
434324 requests in 30.09s, 142.90MB read
Requests/sec: 14432.04
Transfer/sec: 4.75MB
```
## With instrumentation
- Run wrk
```jsx
apisix git:(nic/opentelemetry) ✗ wrk -t4 -c100 -d30s
http://localhost:9080/headers
Running 30s test @ http://localhost:9080/headers
4 threads and 100 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 25.08ms 23.26ms 375.33ms 88.01%
Req/Sec 1.16k 334.41 2.13k 67.03%
138659 requests in 30.08s, 45.62MB read
Requests/sec: 4609.57
Transfer/sec: 1.52MB
```
- Check traces
📊 Summary:
After adding OpenTelemetry instrumentation, the request throughput dropped
by about 68%, and average latency increased roughly threefold.
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