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pixie-io / pixie

Instant Kubernetes-Native Application Observability
https://px.dev
Apache License 2.0
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How to set the sampling frequency in perf_flamegraph.pxl？ #1915

Closed yeqer closed 1 month ago

yeqer commented 1 month ago

Hello！ I want to use perf_flamegraph.pxl, how can I set the sampling frequency？Are there any related tutorials?

ddelnano commented 1 month ago

Hi @yeqer! The perf profiler exposes a command line argument for changing the sampling frequency from its default of 11ms (--stirling_profiler_stack_trace_sample_period_ms). This can be specified via the [patching mechanism](https://docs.px.dev/reference/admin/deploy-options#deploy-pixie-to-a-subset-of-nodes) exposed to thepx` cli and the helm chart.

Please see our profiler tutorial here. It's easy to get setup with a pixie deployment and the sample application mentioned in that post.

I'm going to close this issue since we want to keep things focused on feature requests, active issues, etc. However, I'm happy to continue discussing the profiler on this thread or in our community slack!