83 lines
2.9 KiB
Bash
83 lines
2.9 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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OUT_DIR="/work/reports"
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BIN="/build/relay"
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CPU_DIR="/profiles/cpu"
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MEM_DIR="/profiles/mem"
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ALLOC_DIR="/profiles/alloc"
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REPORT="$OUT_DIR/profile-analysis.txt"
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mkdir -p "$OUT_DIR"
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# Helper: wait for any file matching a glob in a directory to exist and be non-empty
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wait_for_glob() {
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local dir="$1"; local pattern="$2"; local timeout=${3:-180}; local waited=0
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echo "[analyze] Waiting for profiles in ${dir}/${pattern} (timeout ${timeout}s)..." >&2
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while [[ $waited -lt $timeout ]]; do
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# shellcheck disable=SC2086
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local f
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f=$(ls -1 ${dir}/${pattern} 2>/dev/null | head -n1 || true)
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if [[ -n "${f}" && -s "${f}" ]]; then
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echo "[analyze] Found: ${f}" >&2
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echo -n "${f}"
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return 0
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fi
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sleep 3; waited=$((waited+3))
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done
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echo "" # return empty string
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return 1
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}
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CPU_FILE=$(wait_for_glob "$CPU_DIR" "cpu*.pprof" 180 || true)
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MEM_FILE=$(wait_for_glob "$MEM_DIR" "*.pprof" 180 || true)
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ALLOC_FILE=$(wait_for_glob "$ALLOC_DIR" "*.pprof" 180 || true)
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if [[ -z "$CPU_FILE" ]]; then echo "[analyze] WARNING: CPU profile not found at $CPU_DIR" >&2; fi
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if [[ -z "$MEM_FILE" ]]; then echo "[analyze] WARNING: Mem profile not found at $MEM_DIR" >&2; fi
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if [[ -z "$ALLOC_FILE" ]]; then echo "[analyze] WARNING: Alloc profile not found at $ALLOC_DIR" >&2; fi
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{
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echo "==== next.orly.dev Profiling Analysis ===="
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date
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echo
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if [[ -n "$CPU_FILE" && -s "$CPU_FILE" ]]; then
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echo "-- CPU Hotspots (top by flat CPU) --"
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go tool pprof -top -nodecount=15 "$BIN" "$CPU_FILE" 2>/dev/null | sed '1,2d'
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echo
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else
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echo "CPU profile: not available"
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echo
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fi
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if [[ -n "$MEM_FILE" && -s "$MEM_FILE" ]]; then
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echo "-- Memory (In-Use Space) Hotspots --"
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go tool pprof -top -sample_index=inuse_space -nodecount=15 "$BIN" "$MEM_FILE" 2>/dev/null | sed '1,2d'
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echo
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else
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echo "Memory (in-use) profile: not available"
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echo
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fi
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if [[ -n "$ALLOC_FILE" && -s "$ALLOC_FILE" ]]; then
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echo "-- Allocations (Total Alloc Space) Hotspots --"
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go tool pprof -top -sample_index=alloc_space -nodecount=15 "$BIN" "$ALLOC_FILE" 2>/dev/null | sed '1,2d'
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echo
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echo "-- Allocation Frequency (Alloc Objects) --"
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go tool pprof -top -sample_index=alloc_objects -nodecount=15 "$BIN" "$ALLOC_FILE" 2>/dev/null | sed '1,2d'
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echo
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else
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echo "Allocation profile: not available"
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echo
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fi
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echo "Notes:"
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echo "- CPU section identifies functions using the most CPU time."
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echo "- Memory section identifies which functions retain the most memory (in-use)."
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echo "- Allocations sections identify functions responsible for the most allocation volume and count, which correlates with GC pressure."
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echo "- Profiles are created by github.com/pkg/profile and may only be flushed when the relay process receives a shutdown; CPU profile often requires process exit."
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} > "$REPORT"
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echo "[analyze] Wrote report to $REPORT" >&2
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