diff options
Diffstat (limited to 'vendor/github.com/prometheus/common/expfmt/bench_test.go')
| -rw-r--r-- | vendor/github.com/prometheus/common/expfmt/bench_test.go | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/vendor/github.com/prometheus/common/expfmt/bench_test.go b/vendor/github.com/prometheus/common/expfmt/bench_test.go deleted file mode 100644 index e539bfc13..000000000 --- a/vendor/github.com/prometheus/common/expfmt/bench_test.go +++ /dev/null @@ -1,167 +0,0 @@ -// Copyright 2015 The Prometheus Authors -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package expfmt - -import ( - "bytes" - "compress/gzip" - "io" - "io/ioutil" - "testing" - - "github.com/matttproud/golang_protobuf_extensions/pbutil" - - dto "github.com/prometheus/client_model/go" -) - -var parser TextParser - -// Benchmarks to show how much penalty text format parsing actually inflicts. -// -// Example results on Linux 3.13.0, Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz, go1.4. -// -// BenchmarkParseText 1000 1188535 ns/op 205085 B/op 6135 allocs/op -// BenchmarkParseTextGzip 1000 1376567 ns/op 246224 B/op 6151 allocs/op -// BenchmarkParseProto 10000 172790 ns/op 52258 B/op 1160 allocs/op -// BenchmarkParseProtoGzip 5000 324021 ns/op 94931 B/op 1211 allocs/op -// BenchmarkParseProtoMap 10000 187946 ns/op 58714 B/op 1203 allocs/op -// -// CONCLUSION: The overhead for the map is negligible. Text format needs ~5x more allocations. -// Without compression, it needs ~7x longer, but with compression (the more relevant scenario), -// the difference becomes less relevant, only ~4x. -// -// The test data contains 248 samples. - -// BenchmarkParseText benchmarks the parsing of a text-format scrape into metric -// family DTOs. -func BenchmarkParseText(b *testing.B) { - b.StopTimer() - data, err := ioutil.ReadFile("testdata/text") - if err != nil { - b.Fatal(err) - } - b.StartTimer() - - for i := 0; i < b.N; i++ { - if _, err := parser.TextToMetricFamilies(bytes.NewReader(data)); err != nil { - b.Fatal(err) - } - } -} - -// BenchmarkParseTextGzip benchmarks the parsing of a gzipped text-format scrape -// into metric family DTOs. -func BenchmarkParseTextGzip(b *testing.B) { - b.StopTimer() - data, err := ioutil.ReadFile("testdata/text.gz") - if err != nil { - b.Fatal(err) - } - b.StartTimer() - - for i := 0; i < b.N; i++ { - in, err := gzip.NewReader(bytes.NewReader(data)) - if err != nil { - b.Fatal(err) - } - if _, err := parser.TextToMetricFamilies(in); err != nil { - b.Fatal(err) - } - } -} - -// BenchmarkParseProto benchmarks the parsing of a protobuf-format scrape into -// metric family DTOs. Note that this does not build a map of metric families -// (as the text version does), because it is not required for Prometheus -// ingestion either. (However, it is required for the text-format parsing, as -// the metric family might be sprinkled all over the text, while the -// protobuf-format guarantees bundling at one place.) -func BenchmarkParseProto(b *testing.B) { - b.StopTimer() - data, err := ioutil.ReadFile("testdata/protobuf") - if err != nil { - b.Fatal(err) - } - b.StartTimer() - - for i := 0; i < b.N; i++ { - family := &dto.MetricFamily{} - in := bytes.NewReader(data) - for { - family.Reset() - if _, err := pbutil.ReadDelimited(in, family); err != nil { - if err == io.EOF { - break - } - b.Fatal(err) - } - } - } -} - -// BenchmarkParseProtoGzip is like BenchmarkParseProto above, but parses gzipped -// protobuf format. -func BenchmarkParseProtoGzip(b *testing.B) { - b.StopTimer() - data, err := ioutil.ReadFile("testdata/protobuf.gz") - if err != nil { - b.Fatal(err) - } - b.StartTimer() - - for i := 0; i < b.N; i++ { - family := &dto.MetricFamily{} - in, err := gzip.NewReader(bytes.NewReader(data)) - if err != nil { - b.Fatal(err) - } - for { - family.Reset() - if _, err := pbutil.ReadDelimited(in, family); err != nil { - if err == io.EOF { - break - } - b.Fatal(err) - } - } - } -} - -// BenchmarkParseProtoMap is like BenchmarkParseProto but DOES put the parsed -// metric family DTOs into a map. This is not happening during Prometheus -// ingestion. It is just here to measure the overhead of that map creation and -// separate it from the overhead of the text format parsing. -func BenchmarkParseProtoMap(b *testing.B) { - b.StopTimer() - data, err := ioutil.ReadFile("testdata/protobuf") - if err != nil { - b.Fatal(err) - } - b.StartTimer() - - for i := 0; i < b.N; i++ { - families := map[string]*dto.MetricFamily{} - in := bytes.NewReader(data) - for { - family := &dto.MetricFamily{} - if _, err := pbutil.ReadDelimited(in, family); err != nil { - if err == io.EOF { - break - } - b.Fatal(err) - } - families[family.GetName()] = family - } - } -} |