performance.exe
(2005-12-05 09:07:54, Size: 329 kB, Downloads: 549)

思考时间大于阈值时生成： 使用思考时间的阈值。如果录制思考时间小于该阈值，VuGen 将不会生成思考时间语句。您也可以指定阈值。默认值为 3 - 如果思考时间少于 3 秒，VuGen 将不会生成思考时间语句。如果禁用此选项，VuGen 将不会生成任何思考时间。（默认情况下启用）

脚本：

    lr_start_sub_transaction("think time1","t1");

    lr_think_time(10);

    lr_end_sub_transaction("think time1",LR_PASS);

    lr_start_sub_transaction("think time2","t1");

    lr_think_time(10);

    lr_end_sub_transaction("think time2",LR_PASS);

       lr_end_transaction("t1", LR_AUTO);

输出：

Action.c(8): Notify: Transaction "t1" started.

Action.c(9): Notify: Transaction "think time1" started.

Action.c(10): lr_think_time: 10.00 seconds.

Action.c(11): Notify: Transaction "think time1" ended with "Pass" status (Duration: 9.9939 Think Time: 9.9892).

Action.c(12): Notify: Transaction "think time2" started.

Action.c(13): lr_think_time: 10.00 seconds.

Action.c(14): Notify: Transaction "think time2" ended with "Pass" status (Duration: 9.9954 Think Time: 9.9906).

Action.c(15): Notify: Transaction "t1" ended with "Pass" status (Duration: 19.9994 Think Time: 19.9798).

性能测试注意事项

loadrunner 运行状态描述

#########################################################################################################
#
# Test Name     : Date Boundary
# Subject          : Open Order Form
#
# Descrīption    : Checks that the input of illegal values in the Flight Date is blocked and that error messages
#    appear.  The following input should be tested:
#     1. Flight Date Edit field is disabled when button is unchecked
#     2. Characters (not accepted)
#     3. More than six numbers (not accepted)
#     4. Less than six numbers (OK is disabled)
#     5. Invalid Month
#     6. Invalid date of the month
#     7. No entry
#
#
#########################################################################################################

#static variables:
static ret_val,date_str,i;
# Constant declaration
static const DISABLED = FALSE;

# Variable declaration.  Can be anything the user wants.
static date_string_of_chars  = "as/cd/ef";     # Used in STEP 2.  Characters (Not accepted).
static date_seven_numbers = "12/34/567"; # Used in STEP 3.  More than six numbers not accepted.
static date_invalid_month    = "13/20/95";   # Used in STEP 5.  Invalid month.
static date_invalid_day        = "12/32/95";   # Used in STEP 6.  Invalid date of month.

static lib_path = getvar("testname") & "\\..\\flt_lib";

# Static function reinitialize ().  Reinitializes Flight Date to OFF and clears the edit field.
static function reinitialize ()
{
 auto ret_val;
 set_window ("Open Order");
 obj_get_info ("FlightDateEdit", "enabled", ret_val);
 if (ret_val == TRUE) {
     set_window ("Open Order");
  edit_set_insert_pos ("FlightDateEdit", 0, 0);
  type ("<kS_End_E><kDel_E>");
 }
}

# Static function insert_date ().  Inserts the date into the FlightDateEdit field.
static function insert_date (in date)
{
 set_window ("Open Order");
 edit_set_insert_pos("FlightDateEdit",0,0);
 type(date);
}

reload(lib_path);

# Open the flight application
rc = open_flight();
if (rc == E_GENERAL_ERROR){
  tl_step(initialization, FAIL,couldnt_open_flight);
 clean_up();
 texit;
}

# Initialization.
open_OpenOrderForm ();

# STEP 1.  Flight Date Edit is disabled

set_window ("Open Order");

# Checking to see if the edit field is disabled when button is unchecked
obj_get_info ("FlightDateEdit", "enabled", ret_val);
if (ret_val == DISABLED)
 tl_step (disabled, PASS, flight_date_disabled);
else
 tl_step (disabled, FAIL, flight_date_not_disabled);
reinitialize ();

# STEP 2.  Characters (not accepted)

button_set ("Flight Date", ON);

# Inserting a date of characters using variable, "date_string_of_chars", defined above.
insert_date (date_string_of_chars);
edit_get_text ("FlightDateEdit", date_str);

# Checking to see if application handled illegal open order procedure
if (date_str == "__/__/__")
 tl_step (characters, PASS, chars_not_accepted);
else
 tl_step (characters, FAIL, chars_accepted);
reinitialize ();

# STEP 3. More than six numbers (not accepted)

button_set ("Flight Date", ON);
# Inserting a date consisting of more than six numbers using variable, "date_seven_numbers", defined above.
insert_date (date_seven_numbers);
edit_get_text ("FlightDateEdit", date_str);

# Checking to see if application handled illegal open order procedure
if (date_str == "12/34/56")
 tl_step(more_than_six, PASS, more_than_six_not_accepted);
else
 tl_step(more_than_six, FAIL, more_than_six_accepted);
reinitialize ();

# STEP 4. Less than six numbers (OK is disabled)

edit_set_insert_pos ("FlightDateEdit", 0, 0);

# Using for_loop to systematically check if OK button is disabled for any date with less than six numbers in it
for (i = 1; i <= 6; i++) {
 type(i);
 if (button_check_enabled ("OK", TRUE) == E_OK)
  break;

}

#  The actual check to make sure that OK was disabled for date less than six numbers
ts_msg = sprintf(ok_not_disabled, i);
if (i < 6)
 tl_step (less_than_six, FAIL, ts_msg);
else
 tl_step (less_than_six, PASS, ok_disabled);
reinitialize ();

# STEP 5. Invalid Month

set_window ("Open Order");
# Inserting a date with an invalid month using variable, "date_invalid_month", defined above.
insert_date (date_invalid_month);

# Checking to verify that unless there is a valid month, an error message will pop up when trying to press "OK"
set_window("Open Order");
button_press("OK");
if(win_exists("Flight Reservation Message",10) != E_OK){
 tl_step (invalid_month, FAIL, invalid_month_msg_popup);
 clear_main_window();
 open_OpenOrderForm ();
}
else{
 set_window("Flight Reservation Message");
 static_get_text("Message", txt);
 if(txt !=invalid_month_entered_msg)
  tl_step (invalid_month, FAIL, invalid_month_wrong_msg);
 else
  tl_step (invalid_month, PASS, invalid_month_correct_msg);
 button_press("OK");
}
reinitialize ();

# STEP 6.  Invalid day of month.

set_window ("Open Order");
# Inserting a date with an invalid day using variable, "date_invalid_day", defined above.
insert_date (date_invalid_day);

# Checking to verify that unless there is a valid day of the month the "OK" button will be disabled
set_window("Open Order");
button_press("OK");
if(win_exists("Flight Reservation Message",10) != E_OK){
 tl_step (invalid_day, FAIL, invalid_day_no_err_msg);
 clear_main_window();
 open_OpenOrderForm ();
}
else{
 set_window("Flight Reservation Message");
 static_get_text("Message", txt);
 if(txt !=invalid_day_entered_msg)
  tl_step (invalid_day, FAIL, invalid_day_wrong_err_msg);
 else
  tl_step (invalid_day, PASS, invalid_day_not_accepted);
 button_press("OK");
}
reinitialize ();

# STEP 7.  No Entry.

set_window ("Open Order");
# Inserting no date to see if OK is disabled.
insert_date ("__/__/__");

# Checking to see if OK is disabled without any date set in edit field
if (button_check_enabled ("OK", TRUE) != E_OK)
 tl_step (no_entry, PASS, ok_button_disabled);
else
 tl_step (no_entry, FAIL, ok_button_enabled);

# Returning to initial state.
button_press ("Cancel");
clean_up();

# End of test.

Application Center Test 在测试运行中自动监视 HTTP 性能统计信息，但性能计数器必须在测试运行之前明确进行配置。

请检查 ACTTrace.log 文件和报告，并确保不存在以下错误：
脚本错误
DNS 错误
套接字连接错误
HTTP 错误
如有必要，请在重新运行测试之前改正其中的错误。

dcomcnfg.exe 启动 DCOM 配置工具

计算页面性能的公式
以下公式通过测量每个请求所需的处理器周期数来量化 Web 应用程序的性能。该公式用所消耗的周期数除以所处理的请求数。

(sum of processor speed x processor use)
________________________________________  = cost, in cycles/request (or Hz/rps)
     number of requests per second
例如，在应力测试中，ASP 页面的最大容量可达每秒 800 个请求，同时 Web 服务器的处理器使用率为 85%。如果 Web 服务器的处理器频率为 700 MHz（每秒 700,000,000 周期），可以使用以下公式来计算页面的成本：

((4 x 700 000 000 cycles/s) x 0.85)
___________________________________ = 2 975 000 cycles/request
         800 requests/s
计算页面性能的 VBscrīpt 代码
使用以下 VBscrīpt 函数计算成本：

'''''''''''''''''''''''''''''''''''''''''''''''''''''''
' Function to return the cost of a page, based on
' stress test values and Web server/cluster hardware.
'
' Returns: page cost, in millions of cycles per request
'
Function GetPageCost(iSumOfProcessorSpeeds, _
                  fAverageProcessorUse, iAverageRPS)
   Dim iSpentCyclesPerSecond

   ' calculate the number of cycles used over the testing period
   iSpentCyclesPerSecond = iSumOfProcessorSpeeds _
                              * fAverageProcessorUse

   ' calculate the amount of work performed by the Web server
   If (iAverageRPS > 0) Then
      GetPageCost = iSpentCyclesPerSecond / iAverageRPS
   Else
      GetPageCost = 0
   End If
End Function
 
使用页面成本的示例
了解页面成本有许多用途。

最显而易见的用途是比较两个不同页面的性能，或者比较同一页面在调整前后的成本。

特别是当测试对站点中的所有页面进行请求时，可以通过成本初步估计是否需要随着要处理的通信量的增加、CPU 使用率的更改（或者同时处理两者）添加附加硬件。

在前面的示例中，需要多大的处理器速度才能保证处理两倍的站点通信量，同时使处理器的使用率保持在 40% 左右，以便可以轻松处理至少达到 3200 rp 的临时负载增长？

以下计算表明需要的处理器速度大约为 11900 MHz：

                            page cost x target RPS
estimated processor speed = ______________________
                                 processor use

                            2 975 000 cycles/request x 1600 requests/s
estimated processor speed = __________________________________________
                                                0.40

estimated processor speed =  11 900 000 000 cycles/s

number of 700 MHz processors needed = 11 900 MHz / 700 MHz = 17
新的性能目标要求 Web 服务器群集中有大约 17 个处理器，而原来只需 4 个。再次强调，这些估计仅当处理器速度是限制 Web 应用程序性能的因素时才有意义。