pkg/textparse: add more benchmarking, align lex defs

pkg/textparse/lex.l

@@ -7,8 +7,6 @@ import (
         "strconv"
 )
 
-//type lstate int
-
 
 // Lex is called by the parser generated by "go tool yacc" to obtain each
 // token. The method is opened before the matching rules block and closed at
@@ -45,7 +43,7 @@ M     [a-zA-Z_:]
 
 %%
 
-\0                   return 0
+\0                                    return eof
 #[^\r\n]*\n                           l.mstart = l.i
 [\r\n \t]+                            l.mstart = l.i
 

pkg/textparse/lex.l.go

@@ -8,8 +8,6 @@ import (
 	"strconv"
 )
 
-//type lstate int
-
 // Lex is called by the parser generated by "go tool yacc" to obtain each
 // token. The method is opened before the matching rules block and closed at
 // the end of the file.

pkg/textparse/parse_test.go

@@ -1,11 +1,15 @@
 package textparse
 
 import (
-	"fmt"
+	"bytes"
+	"compress/gzip"
+	"io"
 	"io/ioutil"
 	"os"
 	"testing"
 
+	"github.com/prometheus/common/expfmt"
+	"github.com/prometheus/common/model"
 	"github.com/prometheus/prometheus/pkg/labels"
 	"github.com/stretchr/testify/require"
 )
@@ -71,41 +75,153 @@ go_goroutines 33`
 
 }
 
+const (
+	testdataSampleCount = 410
+)
+
 func BenchmarkParse(b *testing.B) {
-	f, err := os.Open("testdata.txt")
+	for _, fn := range []string{"testdata.txt", "testdata.nometa.txt"} {
+		f, err := os.Open(fn)
 		require.NoError(b, err)
 		defer f.Close()
 
-	var tbuf []byte
-
 		buf, err := ioutil.ReadAll(f)
 		require.NoError(b, err)
 
-	for i := 0; i*527 < b.N; i++ {
+		b.Run("no-decode-metric/"+fn, func(b *testing.B) {
-		tbuf = append(tbuf, buf...)
-		tbuf = append(tbuf, '\n')
-	}
-
-	p := New(tbuf)
-	i := 0
-	var m labels.Labels
 			total := 0
 
-	b.ResetTimer()
+			b.SetBytes(int64(len(buf) * (b.N / testdataSampleCount)))
 			b.ReportAllocs()
-	b.SetBytes(int64(len(tbuf)))
+			b.ResetTimer()
+
+			for i := 0; i < b.N; i += testdataSampleCount {
+				p := New(buf)
 
 				for p.Next() && i < b.N {
-		p.At()
+					m, _, _ := p.At()
+
+					total += len(m)
+					i++
+				}
+				require.NoError(b, p.Err())
+			}
+			_ = total
+		})
+		b.Run("decode-metric/"+fn, func(b *testing.B) {
+			total := 0
+
+			b.SetBytes(int64(len(buf) * (b.N / testdataSampleCount)))
+			b.ReportAllocs()
+			b.ResetTimer()
+
+			for i := 0; i < b.N; i += testdataSampleCount {
+				p := New(buf)
+
+				for p.Next() && i < b.N {
+					m, _, _ := p.At()
 
 					res := make(labels.Labels, 0, 5)
 					p.Metric(&res)
 
-		total += len(res)
+					total += len(m)
+					i++
+				}
+				require.NoError(b, p.Err())
+			}
+			_ = total
+		})
+		b.Run("decode-metric-reuse/"+fn, func(b *testing.B) {
+			total := 0
+			res := make(labels.Labels, 0, 5)
+
+			b.SetBytes(int64(len(buf) * (b.N / testdataSampleCount)))
+			b.ReportAllocs()
+			b.ResetTimer()
+
+			for i := 0; i < b.N; i += testdataSampleCount {
+				p := New(buf)
+
+				for p.Next() && i < b.N {
+					m, _, _ := p.At()
+
+					p.Metric(&res)
+
+					total += len(m)
 					i++
 					res = res[:0]
 				}
-	_ = m
-	fmt.Println(total)
 				require.NoError(b, p.Err())
 			}
+			_ = total
+		})
+		b.Run("expfmt-text/"+fn, func(b *testing.B) {
+			b.SetBytes(int64(len(buf) * (b.N / testdataSampleCount)))
+			b.ReportAllocs()
+			b.ResetTimer()
+
+			total := 0
+
+			for i := 0; i < b.N; i += testdataSampleCount {
+				var (
+					decSamples = make(model.Vector, 0, 50)
+				)
+				sdec := expfmt.SampleDecoder{
+					Dec: expfmt.NewDecoder(bytes.NewReader(buf), expfmt.FmtText),
+					Opts: &expfmt.DecodeOptions{
+						Timestamp: model.TimeFromUnixNano(0),
+					},
+				}
+
+				for {
+					if err = sdec.Decode(&decSamples); err != nil {
+						break
+					}
+					total += len(decSamples)
+					decSamples = decSamples[:0]
+				}
+			}
+			_ = total
+		})
+	}
+}
+
+func BenchmarkGzip(b *testing.B) {
+	for _, fn := range []string{"testdata.txt", "testdata.nometa.txt"} {
+		b.Run(fn, func(b *testing.B) {
+			f, err := os.Open(fn)
+			require.NoError(b, err)
+			defer f.Close()
+
+			var buf bytes.Buffer
+			gw := gzip.NewWriter(&buf)
+
+			n, err := io.Copy(gw, f)
+			require.NoError(b, err)
+			require.NoError(b, gw.Close())
+
+			gbuf, err := ioutil.ReadAll(&buf)
+			require.NoError(b, err)
+
+			k := b.N / testdataSampleCount
+
+			b.ReportAllocs()
+			b.SetBytes(int64(k) * int64(n))
+			b.ResetTimer()
+
+			total := 0
+
+			for i := 0; i < k; i++ {
+				gr, err := gzip.NewReader(bytes.NewReader(gbuf))
+				require.NoError(b, err)
+
+				d, err := ioutil.ReadAll(gr)
+				require.NoError(b, err)
+				require.NoError(b, gr.Close())
+
+				total += len(d)
+			}
+			_ = total
+		})
+	}
+}

pkg/textparse/testdata.nometa.txt

@@ -0,0 +1,410 @@
+go_gc_duration_seconds{quantile="0"} 4.9351e-05
+go_gc_duration_seconds{quantile="0.25"} 7.424100000000001e-05
+go_gc_duration_seconds{quantile="0.5"} 8.3835e-05
+go_gc_duration_seconds{quantile="0.75"} 0.000106744
+go_gc_duration_seconds{quantile="1"} 0.002072195
+go_gc_duration_seconds_sum 0.012139815
+go_gc_duration_seconds_count 99
+go_goroutines 33
+go_memstats_alloc_bytes 1.7518624e+07
+go_memstats_alloc_bytes_total 8.3062296e+08
+go_memstats_buck_hash_sys_bytes 1.494637e+06
+go_memstats_frees_total 4.65658e+06
+go_memstats_gc_sys_bytes 1.107968e+06
+go_memstats_heap_alloc_bytes 1.7518624e+07
+go_memstats_heap_idle_bytes 6.668288e+06
+go_memstats_heap_inuse_bytes 1.8956288e+07
+go_memstats_heap_objects 72755
+go_memstats_heap_released_bytes_total 0
+go_memstats_heap_sys_bytes 2.5624576e+07
+go_memstats_last_gc_time_seconds 1.4843955586166437e+09
+go_memstats_lookups_total 2089
+go_memstats_mallocs_total 4.729335e+06
+go_memstats_mcache_inuse_bytes 9600
+go_memstats_mcache_sys_bytes 16384
+go_memstats_mspan_inuse_bytes 211520
+go_memstats_mspan_sys_bytes 245760
+go_memstats_next_gc_bytes 2.033527e+07
+go_memstats_other_sys_bytes 2.077323e+06
+go_memstats_stack_inuse_bytes 1.6384e+06
+go_memstats_stack_sys_bytes 1.6384e+06
+go_memstats_sys_bytes 3.2205048e+07
+http_request_duration_microseconds{handler="alerts",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="alerts",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="alerts",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="alerts"} 0
+http_request_duration_microseconds_count{handler="alerts"} 0
+http_request_duration_microseconds{handler="config",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="config",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="config",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="config"} 0
+http_request_duration_microseconds_count{handler="config"} 0
+http_request_duration_microseconds{handler="consoles",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="consoles",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="consoles",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="consoles"} 0
+http_request_duration_microseconds_count{handler="consoles"} 0
+http_request_duration_microseconds{handler="drop_series",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="drop_series",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="drop_series",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="drop_series"} 0
+http_request_duration_microseconds_count{handler="drop_series"} 0
+http_request_duration_microseconds{handler="federate",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="federate",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="federate",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="federate"} 0
+http_request_duration_microseconds_count{handler="federate"} 0
+http_request_duration_microseconds{handler="flags",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="flags",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="flags",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="flags"} 0
+http_request_duration_microseconds_count{handler="flags"} 0
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+http_request_duration_microseconds_count{handler="graph"} 3
+http_request_duration_microseconds{handler="heap",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="heap",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="heap",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="heap"} 0
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+http_request_duration_microseconds{handler="options",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="options",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="options",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="options"} 0
+http_request_duration_microseconds_count{handler="options"} 0
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+http_request_duration_microseconds_sum{handler="query"} 26074.11
+http_request_duration_microseconds_count{handler="query"} 6
+http_request_duration_microseconds{handler="query_range",quantile="0.5"} NaN
+http_request_duration_microseconds{handler="query_range",quantile="0.9"} NaN
+http_request_duration_microseconds{handler="query_range",quantile="0.99"} NaN
+http_request_duration_microseconds_sum{handler="query_range"} 0
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+http_request_duration_microseconds{handler="status",quantile="0.5"} NaN
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+http_request_size_bytes_sum{handler="graph"} 1145
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+http_request_size_bytes{handler="heap",quantile="0.5"} NaN
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+http_request_size_bytes{handler="options",quantile="0.5"} NaN
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+http_request_size_bytes{handler="prometheus",quantile="0.9"} 238
+http_request_size_bytes{handler="prometheus",quantile="0.99"} 238
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+http_request_size_bytes_count{handler="prometheus"} 462
+http_request_size_bytes{handler="query",quantile="0.5"} 531
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+http_request_size_bytes{handler="query_range",quantile="0.5"} NaN
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+http_requests_total{code="200",handler="query",method="get"} 6
+http_requests_total{code="200",handler="static",method="get"} 3
+http_response_size_bytes{handler="alerts",quantile="0.5"} NaN
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+http_response_size_bytes{handler="consoles",quantile="0.5"} NaN
+http_response_size_bytes{handler="consoles",quantile="0.9"} NaN
+http_response_size_bytes{handler="consoles",quantile="0.99"} NaN
+http_response_size_bytes_sum{handler="consoles"} 0
+http_response_size_bytes_count{handler="consoles"} 0
+http_response_size_bytes{handler="drop_series",quantile="0.5"} NaN
+http_response_size_bytes{handler="drop_series",quantile="0.9"} NaN
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+http_response_size_bytes{handler="federate",quantile="0.5"} NaN
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+http_response_size_bytes{handler="federate",quantile="0.99"} NaN
+http_response_size_bytes_sum{handler="federate"} 0
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+http_response_size_bytes{handler="flags",quantile="0.5"} NaN
+http_response_size_bytes{handler="flags",quantile="0.9"} NaN
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+http_response_size_bytes_count{handler="flags"} 0
+http_response_size_bytes{handler="graph",quantile="0.5"} 3619
+http_response_size_bytes{handler="graph",quantile="0.9"} 3619
+http_response_size_bytes{handler="graph",quantile="0.99"} 3619
+http_response_size_bytes_sum{handler="graph"} 10857
+http_response_size_bytes_count{handler="graph"} 3
+http_response_size_bytes{handler="heap",quantile="0.5"} NaN
+http_response_size_bytes{handler="heap",quantile="0.9"} NaN
+http_response_size_bytes{handler="heap",quantile="0.99"} NaN
+http_response_size_bytes_sum{handler="heap"} 0
+http_response_size_bytes_count{handler="heap"} 0
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