diff options
Diffstat (limited to 'vendor/github.com/lib/pq/bench_test.go')
-rw-r--r-- | vendor/github.com/lib/pq/bench_test.go | 435 |
1 files changed, 0 insertions, 435 deletions
diff --git a/vendor/github.com/lib/pq/bench_test.go b/vendor/github.com/lib/pq/bench_test.go deleted file mode 100644 index e71f41d06..000000000 --- a/vendor/github.com/lib/pq/bench_test.go +++ /dev/null @@ -1,435 +0,0 @@ -// +build go1.1 - -package pq - -import ( - "bufio" - "bytes" - "database/sql" - "database/sql/driver" - "io" - "math/rand" - "net" - "runtime" - "strconv" - "strings" - "sync" - "testing" - "time" - - "github.com/lib/pq/oid" -) - -var ( - selectStringQuery = "SELECT '" + strings.Repeat("0123456789", 10) + "'" - selectSeriesQuery = "SELECT generate_series(1, 100)" -) - -func BenchmarkSelectString(b *testing.B) { - var result string - benchQuery(b, selectStringQuery, &result) -} - -func BenchmarkSelectSeries(b *testing.B) { - var result int - benchQuery(b, selectSeriesQuery, &result) -} - -func benchQuery(b *testing.B, query string, result interface{}) { - b.StopTimer() - db := openTestConn(b) - defer db.Close() - b.StartTimer() - - for i := 0; i < b.N; i++ { - benchQueryLoop(b, db, query, result) - } -} - -func benchQueryLoop(b *testing.B, db *sql.DB, query string, result interface{}) { - rows, err := db.Query(query) - if err != nil { - b.Fatal(err) - } - defer rows.Close() - for rows.Next() { - err = rows.Scan(result) - if err != nil { - b.Fatal("failed to scan", err) - } - } -} - -// reading from circularConn yields content[:prefixLen] once, followed by -// content[prefixLen:] over and over again. It never returns EOF. -type circularConn struct { - content string - prefixLen int - pos int - net.Conn // for all other net.Conn methods that will never be called -} - -func (r *circularConn) Read(b []byte) (n int, err error) { - n = copy(b, r.content[r.pos:]) - r.pos += n - if r.pos >= len(r.content) { - r.pos = r.prefixLen - } - return -} - -func (r *circularConn) Write(b []byte) (n int, err error) { return len(b), nil } - -func (r *circularConn) Close() error { return nil } - -func fakeConn(content string, prefixLen int) *conn { - c := &circularConn{content: content, prefixLen: prefixLen} - return &conn{buf: bufio.NewReader(c), c: c} -} - -// This benchmark is meant to be the same as BenchmarkSelectString, but takes -// out some of the factors this package can't control. The numbers are less noisy, -// but also the costs of network communication aren't accurately represented. -func BenchmarkMockSelectString(b *testing.B) { - b.StopTimer() - // taken from a recorded run of BenchmarkSelectString - // See: http://www.postgresql.org/docs/current/static/protocol-message-formats.html - const response = "1\x00\x00\x00\x04" + - "t\x00\x00\x00\x06\x00\x00" + - "T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" + - "Z\x00\x00\x00\x05I" + - "2\x00\x00\x00\x04" + - "D\x00\x00\x00n\x00\x01\x00\x00\x00d0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" + - "C\x00\x00\x00\rSELECT 1\x00" + - "Z\x00\x00\x00\x05I" + - "3\x00\x00\x00\x04" + - "Z\x00\x00\x00\x05I" - c := fakeConn(response, 0) - b.StartTimer() - - for i := 0; i < b.N; i++ { - benchMockQuery(b, c, selectStringQuery) - } -} - -var seriesRowData = func() string { - var buf bytes.Buffer - for i := 1; i <= 100; i++ { - digits := byte(2) - if i >= 100 { - digits = 3 - } else if i < 10 { - digits = 1 - } - buf.WriteString("D\x00\x00\x00") - buf.WriteByte(10 + digits) - buf.WriteString("\x00\x01\x00\x00\x00") - buf.WriteByte(digits) - buf.WriteString(strconv.Itoa(i)) - } - return buf.String() -}() - -func BenchmarkMockSelectSeries(b *testing.B) { - b.StopTimer() - var response = "1\x00\x00\x00\x04" + - "t\x00\x00\x00\x06\x00\x00" + - "T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" + - "Z\x00\x00\x00\x05I" + - "2\x00\x00\x00\x04" + - seriesRowData + - "C\x00\x00\x00\x0fSELECT 100\x00" + - "Z\x00\x00\x00\x05I" + - "3\x00\x00\x00\x04" + - "Z\x00\x00\x00\x05I" - c := fakeConn(response, 0) - b.StartTimer() - - for i := 0; i < b.N; i++ { - benchMockQuery(b, c, selectSeriesQuery) - } -} - -func benchMockQuery(b *testing.B, c *conn, query string) { - stmt, err := c.Prepare(query) - if err != nil { - b.Fatal(err) - } - defer stmt.Close() - rows, err := stmt.Query(nil) - if err != nil { - b.Fatal(err) - } - defer rows.Close() - var dest [1]driver.Value - for { - if err := rows.Next(dest[:]); err != nil { - if err == io.EOF { - break - } - b.Fatal(err) - } - } -} - -func BenchmarkPreparedSelectString(b *testing.B) { - var result string - benchPreparedQuery(b, selectStringQuery, &result) -} - -func BenchmarkPreparedSelectSeries(b *testing.B) { - var result int - benchPreparedQuery(b, selectSeriesQuery, &result) -} - -func benchPreparedQuery(b *testing.B, query string, result interface{}) { - b.StopTimer() - db := openTestConn(b) - defer db.Close() - stmt, err := db.Prepare(query) - if err != nil { - b.Fatal(err) - } - defer stmt.Close() - b.StartTimer() - - for i := 0; i < b.N; i++ { - benchPreparedQueryLoop(b, db, stmt, result) - } -} - -func benchPreparedQueryLoop(b *testing.B, db *sql.DB, stmt *sql.Stmt, result interface{}) { - rows, err := stmt.Query() - if err != nil { - b.Fatal(err) - } - if !rows.Next() { - rows.Close() - b.Fatal("no rows") - } - defer rows.Close() - for rows.Next() { - err = rows.Scan(&result) - if err != nil { - b.Fatal("failed to scan") - } - } -} - -// See the comment for BenchmarkMockSelectString. -func BenchmarkMockPreparedSelectString(b *testing.B) { - b.StopTimer() - const parseResponse = "1\x00\x00\x00\x04" + - "t\x00\x00\x00\x06\x00\x00" + - "T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" + - "Z\x00\x00\x00\x05I" - const responses = parseResponse + - "2\x00\x00\x00\x04" + - "D\x00\x00\x00n\x00\x01\x00\x00\x00d0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" + - "C\x00\x00\x00\rSELECT 1\x00" + - "Z\x00\x00\x00\x05I" - c := fakeConn(responses, len(parseResponse)) - - stmt, err := c.Prepare(selectStringQuery) - if err != nil { - b.Fatal(err) - } - b.StartTimer() - - for i := 0; i < b.N; i++ { - benchPreparedMockQuery(b, c, stmt) - } -} - -func BenchmarkMockPreparedSelectSeries(b *testing.B) { - b.StopTimer() - const parseResponse = "1\x00\x00\x00\x04" + - "t\x00\x00\x00\x06\x00\x00" + - "T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" + - "Z\x00\x00\x00\x05I" - var responses = parseResponse + - "2\x00\x00\x00\x04" + - seriesRowData + - "C\x00\x00\x00\x0fSELECT 100\x00" + - "Z\x00\x00\x00\x05I" - c := fakeConn(responses, len(parseResponse)) - - stmt, err := c.Prepare(selectSeriesQuery) - if err != nil { - b.Fatal(err) - } - b.StartTimer() - - for i := 0; i < b.N; i++ { - benchPreparedMockQuery(b, c, stmt) - } -} - -func benchPreparedMockQuery(b *testing.B, c *conn, stmt driver.Stmt) { - rows, err := stmt.Query(nil) - if err != nil { - b.Fatal(err) - } - defer rows.Close() - var dest [1]driver.Value - for { - if err := rows.Next(dest[:]); err != nil { - if err == io.EOF { - break - } - b.Fatal(err) - } - } -} - -func BenchmarkEncodeInt64(b *testing.B) { - for i := 0; i < b.N; i++ { - encode(¶meterStatus{}, int64(1234), oid.T_int8) - } -} - -func BenchmarkEncodeFloat64(b *testing.B) { - for i := 0; i < b.N; i++ { - encode(¶meterStatus{}, 3.14159, oid.T_float8) - } -} - -var testByteString = []byte("abcdefghijklmnopqrstuvwxyz") - -func BenchmarkEncodeByteaHex(b *testing.B) { - for i := 0; i < b.N; i++ { - encode(¶meterStatus{serverVersion: 90000}, testByteString, oid.T_bytea) - } -} -func BenchmarkEncodeByteaEscape(b *testing.B) { - for i := 0; i < b.N; i++ { - encode(¶meterStatus{serverVersion: 84000}, testByteString, oid.T_bytea) - } -} - -func BenchmarkEncodeBool(b *testing.B) { - for i := 0; i < b.N; i++ { - encode(¶meterStatus{}, true, oid.T_bool) - } -} - -var testTimestamptz = time.Date(2001, time.January, 1, 0, 0, 0, 0, time.Local) - -func BenchmarkEncodeTimestamptz(b *testing.B) { - for i := 0; i < b.N; i++ { - encode(¶meterStatus{}, testTimestamptz, oid.T_timestamptz) - } -} - -var testIntBytes = []byte("1234") - -func BenchmarkDecodeInt64(b *testing.B) { - for i := 0; i < b.N; i++ { - decode(¶meterStatus{}, testIntBytes, oid.T_int8, formatText) - } -} - -var testFloatBytes = []byte("3.14159") - -func BenchmarkDecodeFloat64(b *testing.B) { - for i := 0; i < b.N; i++ { - decode(¶meterStatus{}, testFloatBytes, oid.T_float8, formatText) - } -} - -var testBoolBytes = []byte{'t'} - -func BenchmarkDecodeBool(b *testing.B) { - for i := 0; i < b.N; i++ { - decode(¶meterStatus{}, testBoolBytes, oid.T_bool, formatText) - } -} - -func TestDecodeBool(t *testing.T) { - db := openTestConn(t) - rows, err := db.Query("select true") - if err != nil { - t.Fatal(err) - } - rows.Close() -} - -var testTimestamptzBytes = []byte("2013-09-17 22:15:32.360754-07") - -func BenchmarkDecodeTimestamptz(b *testing.B) { - for i := 0; i < b.N; i++ { - decode(¶meterStatus{}, testTimestamptzBytes, oid.T_timestamptz, formatText) - } -} - -func BenchmarkDecodeTimestamptzMultiThread(b *testing.B) { - oldProcs := runtime.GOMAXPROCS(0) - defer runtime.GOMAXPROCS(oldProcs) - runtime.GOMAXPROCS(runtime.NumCPU()) - globalLocationCache = newLocationCache() - - f := func(wg *sync.WaitGroup, loops int) { - defer wg.Done() - for i := 0; i < loops; i++ { - decode(¶meterStatus{}, testTimestamptzBytes, oid.T_timestamptz, formatText) - } - } - - wg := &sync.WaitGroup{} - b.ResetTimer() - for j := 0; j < 10; j++ { - wg.Add(1) - go f(wg, b.N/10) - } - wg.Wait() -} - -func BenchmarkLocationCache(b *testing.B) { - globalLocationCache = newLocationCache() - for i := 0; i < b.N; i++ { - globalLocationCache.getLocation(rand.Intn(10000)) - } -} - -func BenchmarkLocationCacheMultiThread(b *testing.B) { - oldProcs := runtime.GOMAXPROCS(0) - defer runtime.GOMAXPROCS(oldProcs) - runtime.GOMAXPROCS(runtime.NumCPU()) - globalLocationCache = newLocationCache() - - f := func(wg *sync.WaitGroup, loops int) { - defer wg.Done() - for i := 0; i < loops; i++ { - globalLocationCache.getLocation(rand.Intn(10000)) - } - } - - wg := &sync.WaitGroup{} - b.ResetTimer() - for j := 0; j < 10; j++ { - wg.Add(1) - go f(wg, b.N/10) - } - wg.Wait() -} - -// Stress test the performance of parsing results from the wire. -func BenchmarkResultParsing(b *testing.B) { - b.StopTimer() - - db := openTestConn(b) - defer db.Close() - _, err := db.Exec("BEGIN") - if err != nil { - b.Fatal(err) - } - - b.StartTimer() - for i := 0; i < b.N; i++ { - res, err := db.Query("SELECT generate_series(1, 50000)") - if err != nil { - b.Fatal(err) - } - res.Close() - } -} |