IngestionProfiles
Go Profiling
Go has two paths:
| Path | When to use |
|---|---|
| pprof (this page) | CPU, heap, mutex, and block; expose /debug/pprof |
| eBPF profiler | On-CPU and off-CPU; no code changes (Linux) |
Expose pprof
Burns CPU so the flame graph has samples:
package main
import (
"crypto/sha256"
"net/http"
_ "net/http/pprof"
)
func main() {
go func() {
_ = http.ListenAndServe("127.0.0.1:6060", nil)
}()
buf := []byte("openobserve")
for {
sum := sha256.Sum256(buf)
buf = sum[:]
}
}go mod init pprofdemo
go mod tidy
go run .Scrape with the Collector
Copy the endpoint and Authorization header from Data Sources → Custom → Profiles. Use otelcol-contrib 0.153+ (remote: scrape config). CPU scrape timeout must be longer than ?seconds= on the pprof URL.
receivers:
pprof/cpu:
remote:
endpoint: http://127.0.0.1:6060/debug/pprof/profile?seconds=5
collection_interval: 30s
timeout: 60s
processors:
resource:
attributes:
- key: service.name
value: your-service
action: upsert
exporters:
otlp_http/openobserve:
profiles_endpoint: http://<your-openobserve-host>/api/<your-org>/v1/profiles
headers:
Authorization: Basic <paste-from-Data-Sources>
stream-name: default
service:
pipelines:
profiles:
receivers: [pprof/cpu]
processors: [resource]
exporters: [otlp_http/openobserve]otelcol-contrib --feature-gates=+service.profilesSupport --config=otelcol-config.yamlHeap, allocs, mutex, and block
For mutex and block, call these at process start (CPU and heap work without them):
runtime.SetMutexProfileFraction(1)
runtime.SetBlockProfileRate(1)| Profile | Endpoint |
|---|---|
| CPU | /debug/pprof/profile?seconds=5 |
| Heap | /debug/pprof/heap |
| Allocations | /debug/pprof/allocs |
| Mutex | /debug/pprof/mutex |
| Block | /debug/pprof/block |
Verify in OpenObserve
Next steps
- OTLP Profiles: Collector exporter,
Authorization: Basic, andservice.name. - eBPF profiler: zero-code CPU profiling.
- pprof receiver: scrape options.
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