/
main.go
119 lines (99 loc) · 2.49 KB
/
main.go
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// +build ignore
package main
import (
"database/sql"
"fmt"
"runtime"
"runtime/debug"
"strconv"
"time"
_ "github.com/go-sql-driver/mysql"
"github.com/pubnative/mysqldriver-go"
)
func main() {
debug.SetGCPercent(-1) // disable GC
db := mysqldriver.NewDB("root@tcp(127.0.0.1:3306)/test", 10)
sqlDB, err := sql.Open("mysql", "root@tcp(127.0.0.1:3306)/test")
if err != nil {
panic(err)
}
preFillRecords(100)
objectsInHEAP(func() string { return readAllMysqldriver(db) })
objectsInHEAP(func() string { return readAllGoSqlDriver(sqlDB) })
preFillRecords(1000)
objectsInHEAP(func() string { return readAllMysqldriver(db) })
objectsInHEAP(func() string { return readAllGoSqlDriver(sqlDB) })
preFillRecords(10000)
objectsInHEAP(func() string { return readAllMysqldriver(db) })
objectsInHEAP(func() string { return readAllGoSqlDriver(sqlDB) })
}
func readAllMysqldriver(db *mysqldriver.DB) string {
conn, err := db.GetConn()
if err != nil {
panic(err)
}
defer db.PutConn(conn)
rows, err := conn.Query("SELECT name FROM mysqldriver_benchmarks")
if err != nil {
panic(err)
}
count := 0
for rows.Next() {
name := rows.String()
count++
_ = name
}
return "mysqldriver: records read " + strconv.Itoa(count)
}
func readAllGoSqlDriver(db *sql.DB) string {
rows, err := db.Query("SELECT name FROM mysqldriver_benchmarks")
if err != nil {
panic(err)
}
count := 0
for rows.Next() {
var name string
if err := rows.Scan(&name); err != nil {
panic(err)
}
count++
_ = name
}
return "go-sql-driver: records read " + strconv.Itoa(count)
}
func objectsInHEAP(fn func() string) {
memStats := new(runtime.MemStats)
runtime.ReadMemStats(memStats)
objects := memStats.HeapObjects
now := time.Now()
prefix := fn()
took := time.Since(now)
runtime.ReadMemStats(memStats)
diff := memStats.HeapObjects - objects
fmt.Println(prefix, " HEAP", diff, " time", took)
}
func preFillRecords(num int) {
db := mysqldriver.NewDB("root@tcp(127.0.0.1:3306)/test", 10)
conn, err := db.GetConn()
if err != nil {
panic(err)
}
if _, err := conn.Exec(`DROP TABLE IF EXISTS mysqldriver_benchmarks`); err != nil {
panic(err)
}
if _, err := conn.Exec(`CREATE TABLE mysqldriver_benchmarks (
id int NOT NULL AUTO_INCREMENT,
name varchar(255),
age int,
PRIMARY KEY (id)
)`); err != nil {
panic(err)
}
for i := 0; i < num; i++ {
_, err := conn.Exec(`INSERT INTO mysqldriver_benchmarks(name) VALUES("name` + strconv.Itoa(i) + `")`)
if err != nil {
panic(err)
}
}
db.Close()
}