go mysql rows.next_go语言中rows.Next性能问题

下面代码中 因为数据也不算太大2W多条，但是rows.Next() 竟然执行了1分多钟，我换回C#10来秒，这让我很不理解，有大神能提点下吗？不胜感激

func queryLineInfo() string {

loginfo(log_info, log_project, "数据查询开始!")

rows, err = QuerySql(sqlstr)

loginfo(log_info, log_project, "数据查询结束!")

if err != nil {

rows.Close()

//fmt.Println("数据库查询失败", err)

get_lineinfo.Rescode = "0000"

get_lineinfo.Resmsg = "数据库查询失败！"

}

var databuff []get_lineinfo_buff

loginfo(log_info, log_project, "数据组织开始!")

for rows.Next() {

var buff get_lineinfo_buff

err = rows.Scan(&buff.LineNo, &buff.LineName, &buff.Station_id, &buff.Station_Order, &buff.Station_Name, &buff.IsUpDown, &buff.Status, &buff.Price, &buff.StartTime, &buff.EndTime)

if err != nil {

rows.Close()

loginfo(log_error, log_project, "rows.Scan失败："+err.Error())

get_lineinfo.Rescode = "0002"

get_lineinfo.Resmsg = "数据解析失败！"

} else {

get_lineinfo.Rescode = "0001"

get_lineinfo.Resmsg = "数据获取成功！"

databuff = append(databuff, buff)

}

}

rows.Close()

get_lineinfo.Data = databuff

loginfo(log_info, log_project, "JSON转换开始!")

if jsonstr, err = json.Marshal(get_lineinfo); err != nil {

fmt.Println("Json", err)

}

loginfo(log_info, log_project, "JSON转换结束!")

return string(jsonstr)

}