chore: include heap profile into benchmark report and add notes for p…

…rofiles (envoyproxy#4284)

include heap profile into benchmark report and add notes for profiles

Signed-off-by: shawnh2 <shawnhxh@outlook.com>

test/benchmark/suite/render.go

@@ -77,7 +77,7 @@ func RenderReport(writer io.Writer, name, description string, titleLevel int, re
 	writeSection(writer, "Metrics", titleLevel+1, "")
 	renderMetricsTable(writer, reports)
 
-	writeSection(writer, "Profiles", titleLevel+1, "")
+	writeSection(writer, "Profiles", titleLevel+1, renderProfilesNote())
 	renderProfilesTable(writer, "Memory", "heap", titleLevel+2, reports)
 
 	return nil
@@ -149,14 +149,27 @@ func renderMetricsTable(writer io.Writer, reports []*BenchmarkReport) {
 	_ = table.Flush()
 }
 
+func renderProfilesNote() string {
+	return fmt.Sprintf(`The profiles at different scales are stored under %s directory in report, with name %s.
+
+You can visualize them in a web page by running:
+
+%s
+
+Currently, the supported profile types are:
+- heap
+`, "`/profiles`", "`{ProfileType}.{TestCase}.pprof`", "```shell\ngo tool pprof -http=: path/to/your.pprof\n```")
+}
+
 func renderProfilesTable(writer io.Writer, target, key string, titleLevel int, reports []*BenchmarkReport) {
 	writeSection(writer, target, titleLevel, "")
 
 	for _, report := range reports {
 		// The image is not be rendered yet, so it is a placeholder for the path.
 		// The image will be rendered after the test has finished.
 		writeSection(writer, report.Name, titleLevel+1,
-			fmt.Sprintf("![%s-%s](%s.png)", key, report.Name, report.ProfilesPath[key]))
+			fmt.Sprintf("![%s-%s](%s.png)", key, report.Name,
+				strings.TrimSuffix(report.ProfilesPath[key], ".pprof")))
 	}
 }
 

tools/make/kube.mk

@@ -174,10 +174,7 @@ run-benchmark: install-benchmark-server ## Run benchmark tests
 	go test -v -tags benchmark -timeout $(BENCHMARK_TIMEOUT) ./test/benchmark --rps=$(BENCHMARK_RPS) --connections=$(BENCHMARK_CONNECTIONS) --duration=$(BENCHMARK_DURATION) --report-save-dir=$(BENCHMARK_REPORT_DIR)
 	# render benchmark profiles into image
 	dot -V
-	@for profile in $(wildcard test/benchmark/$(BENCHMARK_REPORT_DIR)/profiles/*.pprof); do \
-		$(call log, "Rendering profile image for: $${profile}"); \
-		go tool pprof -png $${profile} > $${profile}.png; \
-	done
+	find test/benchmark/$(BENCHMARK_REPORT_DIR)/profiles -name "*.pprof" -type f -exec sh -c 'go tool pprof -png "$$1" > "$${1%.pprof}.png"' _ {} \;
 
 .PHONY: install-benchmark-server
 install-benchmark-server: ## Install nighthawk server for benchmark test