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[tools] add benchstat tool (#63694)

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* [tools] add benchstat tool

Adds `golang.org/x/perf/cmd/benchstat` to tools.
Required for differential benchmarking.

Example:
```
make test-go-bench BENCH_OUTPUT=a.txt
make test-go-bench BENCH_OUTPUT=b.txt
make benchstat "BENCH_FILES=a.txt b.txt"
```

While the tool can be invoked directly, the Make target
provides a convient command for CI workflows.

* missing newline

* bump benchstat deps
This commit is contained in:
Luke Okraszewski
2026-02-17 15:46:54 +00:00
committed by GitHub
parent 743ff71391
commit e9356dbd90
5 changed files with 45 additions and 2 deletions
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Makefile
+11 -2
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@@ -1008,6 +1008,7 @@ endif
# todo: Use gotestsum when it is compatible with benchmark output. Currently will consider all benchmarks failed.
.PHONY: test-go-bench
test-go-bench: BENCHMARK_SKIP_PATTERN = "^BenchmarkRoot"
test-go-bench: BENCH_OUTPUT ?= $(TEST_LOG_DIR)/bench.txt
test-go-bench: $(BENCHFIND) | $(TEST_LOG_DIR)
@PKGS=$$($(BENCHFIND) --tags=$(BUILD_TAGS)) ; \
if [ -z "$$PKGS" ]; then \
@@ -1015,11 +1016,12 @@ test-go-bench: $(BENCHFIND) | $(TEST_LOG_DIR)
exit 1; \
fi ; \
go test -run ^$$ -bench . -skip $(BENCHMARK_SKIP_PATTERN) -benchtime 1x $$PKGS \
| tee $(TEST_LOG_DIR)/bench.txt
| tee $(BENCH_OUTPUT)
.PHONY: test-go-bench-root
test-go-bench-root: BENCHMARK_PATTERN = "^BenchmarkRoot"
test-go-bench-root: BENCHMARK_SKIP_PATTERN = ""
test-go-bench-root: BENCH_OUTPUT ?= $(TEST_LOG_DIR)/bench.txt
test-go-bench-root: $(BENCHFIND) | $(TEST_LOG_DIR)
@PKGS=$$($(BENCHFIND) --tags=$(BUILD_TAGS)) ; \
if [ -z "$$PKGS" ]; then \
@@ -1027,7 +1029,7 @@ test-go-bench-root: $(BENCHFIND) | $(TEST_LOG_DIR)
exit 1; \
fi ; \
go test -run ^$$ -bench $(BENCHMARK_PATTERN) -skip $(BENCHMARK_SKIP_PATTERN) -benchtime 1x $$PKGS \
| tee $(TEST_LOG_DIR)/bench.txt
| tee $(BENCH_OUTPUT)
# Make sure untagged vnetdaemon code build/tests.
.PHONY: test-go-vnet-daemon
@@ -2095,3 +2097,10 @@ resource-docs-up-to-date: must-start-clean/host gen-resource-docs
./build.assets/please-run.sh "tctl resource reference docs" "make gen-resource-docs"; \
exit 1; \
fi
.PHONY: benchstat
benchstat:
ifndef BENCH_FILES
$(error "Please provide BENCH_FILES=<file1> <file2> ...")
endif
@$(BENCHSTAT) $(BENCH_FILES) | tee test-logs/benchstat.txt