k8snetworkplumbingwg / multus-cni / 26057498564

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master: 50%

Pull #1509

github

Add optional pprof endpoint support to multus-daemon

Enable multus-daemon to expose Go pprof endpoints for runtime profiling,
allowing operators to capture CPU profiles, memory heap dumps, goroutine
stacks, and execution traces. This helps identify performance hot spots
and memory issues in production.

pprof is gated behind a new "enablePprof" config flag and shares the
existing metrics TCP port, so it is not exposed by default.

Daemon config example:

    {
        "metricsPort": 6061,
        "enablePprof": true
    }

Usage (with metricsPort 6061):

    # 30-second CPU profile
    go tool pprof http://<node>:6061/debug/pprof/profile?seconds=30

    # Memory heap dump
    go tool pprof http://<node>:6061/debug/pprof/heap

    # Goroutine stacks
    curl http://<node>:6061/debug/pprof/goroutine?debug=2

    # Execution trace (5 seconds)
    curl -o trace.out http://<node>:6061/debug/pprof/trace?seconds=5
    go tool trace trace.out

Assisted by Claude Opus 4.6

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Benjamin Pickard <bpickard@redhat.com>

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