Performance test planning: timing

Hi folks,
I'm wondering if anyone has suggestions or input on the timing of test planning specific to performance testing. In particular, how far in advance is it recommended that performance test planning would begin in reference to the intended test window(s)

Hi Jack,
My preference is to start planning for a performance test as soon as possible, even before there is an application to test.
The first stage in planning should be an analysis of how the application will be used. This information can be gathered from a business plan if the application is new, or from site usage metrics from tools like Omniture or Web Trends if the application is presently deployed.
From the business plan or metrics you can begin to work out the key transactions (most heavily used and most business critical), as well as planning how users will execute those transaction (what percentages, what think times, etc).
Then as the test date gets closer and the application becomes available/stable/etc you can begin to flesh out the details of the plan. But the overall goals, analysis and high level planning can begin very early in the development cycle.
CMason
Senior Consultant - eLoadExpert
Empirix

Similar Messages

Database Performance Testing Planning Material

Hi All,
Could anyone please share Performance Testing Planning Material available at any site or anyone used in any projects previously?
Would appreciate if anyone could help!
Thanks for your time!
Regards,

Hi Forstmann,
Many thanks for the information.But I require Performance Testing plan materials wher it has been performed in existing systems.
The material link what you have pasted refers to Performance tuning guide.
Regards,

Log file sync top event during performance test -av 36ms

Hi,
During the performance test for our product before deployment into product i see "log file sync" on top with Avg wait (ms) being 36 which i feel is too high.
 Avg
 wait % DB
Event Waits Time(s) (ms) time Wait Class
log file sync 208,327 7,406 36 46.6 Commit
direct path write 646,833 3,604 6 22.7 User I/O
DB CPU 1,599 10.1
direct path read temp 1,321,596 619 0 3.9 User I/O
log buffer space 4,161 558 134 3.5 ConfiguratAlthough testers are not complaining about the performance of the appplication , we ,DBAs, are expected to be proactive about the any bad signals from DB.
I am not able to figure out why "log file sync" is having such slow response.
Below is the snapshot from the load profile.
 Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 108127 16-May-13 20:15:22 105 6.5
End Snap: 108140 16-May-13 23:30:29 156 8.9
 Elapsed: 195.11 (mins)
 DB Time: 265.09 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
 Buffer Cache: 1,168M 1,136M Std Block Size: 8K
 Shared Pool Size: 1,120M 1,168M Log Buffer: 16,640K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ --------------- --------------- ---------- ----------
 DB Time(s): 1.4 0.1 0.02 0.01
 DB CPU(s): 0.1 0.0 0.00 0.00
 Redo size: 607,512.1 33,092.1
 Logical reads: 3,900.4 212.5
 Block changes: 1,381.4 75.3
Physical reads: 134.5 7.3
Physical writes: 134.0 7.3
 User calls: 145.5 7.9
 Parses: 24.6 1.3
 Hard parses: 7.9 0.4
W/A MB processed: 915,418.7 49,864.2
 Logons: 0.1 0.0
 Executes: 85.2 4.6
 Rollbacks: 0.0 0.0
 Transactions: 18.4Some of the top background wait events:
^LBackground Wait Events DB/Inst: Snaps: 108127-108140
-> ordered by wait time desc, waits desc (idle events last)
-> Only events with Total Wait Time (s) >= .001 are shown
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
 Avg
 %Time Total Wait wait Waits % bg
Event Waits -outs Time (s) (ms) /txn time
log file parallel write 208,563 0 2,528 12 1.0 66.4
db file parallel write 4,264 0 785 184 0.0 20.6
Backup: sbtbackup 1 0 516 516177 0.0 13.6
control file parallel writ 4,436 0 97 22 0.0 2.6
log file sequential read 6,922 0 95 14 0.0 2.5
Log archive I/O 6,820 0 48 7 0.0 1.3
os thread startup 432 0 26 60 0.0 .7
Backup: sbtclose2 1 0 10 10094 0.0 .3
db file sequential read 2,585 0 8 3 0.0 .2
db file single write 560 0 3 6 0.0 .1
log file sync 28 0 1 53 0.0 .0
control file sequential re 36,326 0 1 0 0.2 .0
log file switch completion 4 0 1 207 0.0 .0
buffer busy waits 5 0 1 116 0.0 .0
LGWR wait for redo copy 924 0 1 1 0.0 .0
log file single write 56 0 1 9 0.0 .0
Backup: sbtinfo2 1 0 1 500 0.0 .0During a previous perf test , things didnt look this bad for "log file sync. Few sections from the comparision report(awrddprt.sql)
{code}
Workload Comparison
~~~~~~~~~~~~~~~~~~~ 1st Per Sec 2nd Per Sec %Diff 1st Per Txn 2nd Per Txn %Diff
DB time: 0.78 1.36 74.36 0.02 0.07 250.00
CPU time: 0.18 0.14 -22.22 0.00 0.01 100.00
Redo size: 573,678.11 607,512.05 5.90 15,101.84 33,092.08 119.13
Logical reads: 4,374.04 3,900.38 -10.83 115.14 212.46 84.52
Block changes: 1,593.38 1,381.41 -13.30 41.95 75.25 79.38
Physical reads: 76.44 134.54 76.01 2.01 7.33 264.68
Physical writes: 110.43 134.00 21.34 2.91 7.30 150.86
User calls: 197.62 145.46 -26.39 5.20 7.92 52.31
Parses: 7.28 24.55 237.23 0.19 1.34 605.26
Hard parses: 0.00 7.88 100.00 0.00 0.43 100.00
Sorts: 3.88 4.90 26.29 0.10 0.27 170.00
Logons: 0.09 0.08 -11.11 0.00 0.00 0.00
Executes: 126.69 85.19 -32.76 3.34 4.64 38.92
Transactions: 37.99 18.36 -51.67
First Second Diff
1st 2nd
Event Wait Class Waits Time(s) Avg Time(ms) %DB time Event Wait Class Waits Time(s) Avg Time
(ms) %DB time
SQL*Net more data from client Network 2,133,486 1,270.7 0.6 61.24 log file sync Commit 208,355 7,407.6
35.6 46.57
CPU time N/A 487.1 N/A 23.48 direct path write User I/O 646,849 3,604.7
5.6 22.66
log file sync Commit 99,459 129.5 1.3 6.24 log file parallel write System I/O 208,564 2,528.4
12.1 15.90
log file parallel write System I/O 100,732 126.6 1.3 6.10 CPU time N/A 1,599.3
N/A 10.06
SQL*Net more data to client Network 451,810 103.1 0.2 4.97 db file parallel write System I/O 4,264 784.7 1
84.0 4.93
-direct path write User I/O 121,044 52.5 0.4 2.53 -SQL*Net more data from client Network 7,407,435 279.7
0.0 1.76
-db file parallel write System I/O 986 22.8 23.1 1.10 -SQL*Net more data to client Network 2,714,916 64.6
0.0 0.41
{code}
*To sum it sup:
1. Why is the IO response getting such an hit during the new perf test? Please suggest*
2. Does the number of DB writer impact "log file sync" wait event? We have only one DB writer as the number of cpu on the host is only 4
{code}
select *from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
CORE 11.1.0.7.0 Production
TNS for HPUX: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - Production
{code}
Please let me know if you would like to see any other stats.
Edited by: Kunwar on May 18, 2013 2:20 PM

1. A snapshot interval of 3 hours always generates meaningless results
Below are some details from the 1 hour interval AWR report.
Platform CPUs Cores Sockets Memory(GB)
HP-UX IA (64-bit) 4 4 3 31.95
 Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 108129 16-May-13 20:45:32 140 8.0
End Snap: 108133 16-May-13 21:45:53 150 8.8
 Elapsed: 60.35 (mins)
 DB Time: 140.49 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
 Buffer Cache: 1,168M 1,168M Std Block Size: 8K
 Shared Pool Size: 1,120M 1,120M Log Buffer: 16,640K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ --------------- --------------- ---------- ----------
 DB Time(s): 2.3 0.1 0.03 0.01
 DB CPU(s): 0.1 0.0 0.00 0.00
 Redo size: 719,553.5 34,374.6
 Logical reads: 4,017.4 191.9
 Block changes: 1,521.1 72.7
Physical reads: 136.9 6.5
Physical writes: 158.3 7.6
 User calls: 167.0 8.0
 Parses: 25.8 1.2
 Hard parses: 8.9 0.4
W/A MB processed: 406,220.0 19,406.0
 Logons: 0.1 0.0
 Executes: 88.4 4.2
 Rollbacks: 0.0 0.0
 Transactions: 20.9
Top 5 Timed Foreground Events
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Avg
 wait % DB
Event Waits Time(s) (ms) time Wait Class
log file sync 73,761 6,740 91 80.0 Commit
log buffer space 3,581 541 151 6.4 Configurat
DB CPU 348 4.1
direct path write 238,962 241 1 2.9 User I/O
direct path read temp 487,874 174 0 2.1 User I/O
Background Wait Events DB/Inst: Snaps: 108129-108133
-> ordered by wait time desc, waits desc (idle events last)
-> Only events with Total Wait Time (s) >= .001 are shown
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
 Avg
 %Time Total Wait wait Waits % bg
Event Waits -outs Time (s) (ms) /txn time
log file parallel write 61,049 0 1,891 31 0.8 87.8
db file parallel write 1,590 0 251 158 0.0 11.6
control file parallel writ 1,372 0 56 41 0.0 2.6
log file sequential read 2,473 0 50 20 0.0 2.3
Log archive I/O 2,436 0 20 8 0.0 .9
os thread startup 135 0 8 60 0.0 .4
db file sequential read 668 0 4 6 0.0 .2
db file single write 200 0 2 9 0.0 .1
log file sync 8 0 1 152 0.0 .1
log file single write 20 0 0 21 0.0 .0
control file sequential re 11,218 0 0 0 0.1 .0
buffer busy waits 2 0 0 161 0.0 .0
direct path write 6 0 0 37 0.0 .0
LGWR wait for redo copy 380 0 0 0 0.0 .0
log buffer space 1 0 0 89 0.0 .0
latch: cache buffers lru c 3 0 0 1 0.0 .0 2 The log file sync is a result of commit --> you are committing too often, maybe even every individual record.
Thanks for explanation. +Actually my question is WHY is it so slow (avg wait of 91ms)+3 Your IO subsystem hosting the online redo log files can be a limiting factor.
We don't know anything about your online redo log configuration
Below is my redo log configuration.
 GROUP# STATUS TYPE MEMBER IS_
 1 ONLINE /oradata/fs01/PERFDB1/redo_1a.log NO
 1 ONLINE /oradata/fs02/PERFDB1/redo_1b.log NO
 2 ONLINE /oradata/fs01/PERFDB1/redo_2a.log NO
 2 ONLINE /oradata/fs02/PERFDB1/redo_2b.log NO
 3 ONLINE /oradata/fs01/PERFDB1/redo_3a.log NO
 3 ONLINE /oradata/fs02/PERFDB1/redo_3b.log NO
6 rows selected.
04:13:14 perf_monitor@PERFDB1> col FIRST_CHANGE# for 999999999999999999
04:13:26 perf_monitor@PERFDB1> select *from v$log;
 GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIME
 1 1 40689 524288000 2 YES INACTIVE 13026185905545 18-MAY-13 01:00
 2 1 40690 524288000 2 YES INACTIVE 13026185931010 18-MAY-13 03:32
 3 1 40691 524288000 2 NO CURRENT 13026185933550 18-MAY-13 04:00Edited by: Kunwar on May 18, 2013 2:46 PM

How to setup the environment for doing the Performance Testing?

Hi,
We are planning to start the performance testing for iProcurement Product, Max number of user we are going to use 1000. For this simulation, what are all basic setups need to do for Application Tier, Database Tier,etc... Can anyone suggest what is procedure to setup environment depending upon the load?

User Guides for thee rv120W are here:
http://www.cisco.com/en/US/docs/routers/csbr/rv220w/quick_start/guide/rv220w_qsg.pdf
http://www.cisco.com/en/US/docs/routers/csbr/rv120w/administration/guide/rv120w_admin.pdf
and theres some more stuff over on my site:
http://www.linksysinfo.org/index.php?forums/cisco-small-business-routers-and-vpn-solutions.49/

Regarding performance test

Hi
i need to know how the performance testing is done for Hyperion essbase and planning?
I would be great help ............
Thanks
lakshmi

Hi
i need to know how the performance testing is done for Hyperion essbase and planning?
I would be great help ............
Thanks
lakshmi

How to create a test plan with specific transactions (or program)

Hello,
I'm a new user in Sol Man !
How to create a test plan with specific transactions (or program).
In my Business Blueprint (SOLAR01) I've created in 'transaction tab' the name of my specific transactions and linked it.
In my test plan (STWB_2) those specific doesn't appear to be selected !
Thanks in advance.
Georges HUYNEN

Hi
In solar01 you have defined but you have to assign the test case in solar02 for this test case in the test cases tab.
When you do so expand the business sceanario node in test plan generation of STWB_2 transaction and now that will appear.
Also visit my weblog
/people/community.user/blog/2006/12/07/organize-and-perform-testing-using-solution-manager
please reward points.

Unable to saver images in a note within a Test Plan - STWB_2

Hi all,
While trying to edit a note in Tx STWB_2 (Test Plans), I'm not able to save an image on it. I can add and save text but no images. Other odd thing is that even when I click on "Save Active", the message "Document saved as raw version" appears. In case of text, the data is saved (as mentioned earlier). No mutter save mode I select the note is always saved as a raw.
Is this behavior the standard one or should I perform some actions? Could this message be linked to the fact that I canu2019t saved images in my notes.
Your help is highly appreciated
Solman Version: 7.1 (Windows server 2008 R2/SQL server 2008 R2)
Windows Microsoft Office 2007

Hi all,
While trying to edit a note in Tx STWB_2 (Test Plans), I'm not able to save an image on it. I can add and save text but no images. Other odd thing is that even when I click on "Save Active", the message "Document saved as raw version" appears. In case of text, the data is saved (as mentioned earlier). No mutter save mode I select the note is always saved as a raw.
Is this behavior the standard one or should I perform some actions? Could this message be linked to the fact that I canu2019t saved images in my notes.
Your help is highly appreciated
Solman Version: 7.1 (Windows server 2008 R2/SQL server 2008 R2)
Windows Microsoft Office 2007

Consolidated status overview for all test plan

Hi all,
We are performing our Integration test from SolMan. I would like to generate a consolidated report which will give me data same way as the status overview gives for individual test plan.
This will help me to track the progress at the test package level, which inturn is my IT scenario.
Any quick help will be highly appreciated.
Regards,
Smita

Thanks Prabhakar,
I am aware of this, but this gives me details for one test plan. Even when I use STWB_2, it gives me summary of all the test plans, and for status overview I have to go in each and every test plan.
I am looking for some way out to generate the status overview of multiple test plans together in same screen, for reporting purpose.
Any suggestions?
Thanks,
Smita

Howto make a Performance Test

Hi,
I use UCM 11g. I want to make a performance test on the customer side. That is why my plan was to upload 1.5 million files to the ucm before I start with the tests.
The problem is that I don't know how to upload 1.5 million files. I wanted to use the Archiver to upload a package of 50.000 files over and over again. But I don't see a function that tells the Archiver to create a new version of the file instead of overwriting the old revisiion.
Has someone experience with performance tests? Has someone an idea how I can upload many test files.
Any answer regarding performance tests will be highly appreciated.
Greetings Bodhy

Easiest way is to generate IdcCommand script and 1 .. n number of documents that you would like to checkin (depending on what you want to teat). Make sure you generate this script with the right metadata (you may want to think out the dispersion of metadata to be production-like). For each checkin, include the parameter "doFileCopy=1" (this will allow you to checkin the same files over and over again, saving you a lot of hassle).
Depending on what you want to test, you may also want to set the parameter "dConversion=PASSTHRU" to skip Conversion Server step (IBR).
The generated idcCommand file should look something like this:
@Properties LocalData
IdcService=CHECKIN_NEW
primaryFile=/path/to/file.ext
doFileCopy=1
dConversion=PASSTHRU
dDocType=random_doctype
dDocTitle=random_title
dSecurityGroup=random_security_group
xStorageRule=default
@end
<<EOD>>
@Properties LocalData
IdcService=CHECKIN_NEW
primaryFile=/path/to/file.ext
doFileCopy=1
dConversion=PASSTHRU
dDocType=random_doctype
dDocTitle=random_title
dSecurityGroup=random_security_group
xStorageRule=default
@end
<<EOD>>
etc...Check out the Services Reference Guide to see what options are possible.

[Help] How you guys do the performance test for Hyperion?

Dear All,
Currently, we are building the performance test scripts by using the QALoad. We have identified the following areas for the test.
* Planning Data Form
* Financial Report
* SmartView
However, we hit a number of question.
For Financial Report, when the recorded scripts were playback, we cannot see any pdf files generated under folder $BIPLUS_HOME/temp/.
For SmartView, the recorded scripts just don't work after the Hyperion Services were restarted.
Does anyone have any experience on doing performance test for Hyperion, especially using QALoad? Is there any technical reference out there we can read?
Regards,
Martin

When we playback the QALoad script for Financial Report, we got the following error response!
As you know, when opening an Finacial Report, it will auto login the Datasource. There is no need to provide the username/password. We are wondering if this is related to our problem or not. Please kindly help. We have been spending days/weeks to record the testing scripts.
Does anyone has any idea?
<?xml version = '1.0' encoding = 'UTF-8'?>
<BpmResponse type="error" action="">
<code>5517</code>
<desc>Logon Failed, User Name must not be empty</desc>
<trace>com.hyperion.reporting.util.HyperionReportException: Logon Failed, User Name must not be empty
 at com.hyperion.reporting.api.HRReports.Authorize(Unknown Source)
 at com.hyperion.reporting.api.HRReports.Authenticate(Unknown Source)
 at modules.com._hyperion._reporting._web._reportviewer._HRRunDlg._jspService(_HRRunDlg.java:1075)
 at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
 at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:453)
 at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:591)
 at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:515)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
 at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
 at com.hyperion.reporting.webviewer.HRLocaleFilter.doFilter(Unknown Source)
 at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
 at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
 at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
 at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
 at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:302)
 at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:190)
 at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
 at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
 at java.lang.Thread.run(Thread.java:797)
</trace>
</BpmResponse>
Regards,
Martin

RMS performance testing using HP Loadrunner

Hi,
We are currently planning on how to do our performance testing of Oracle Retail. We are planning to use HP Loadrunner and use different virtual users for Java, GUI, webservices and database requests. Have anyone here done performance testing in RMS using HP Loadrunner and what kind of setup did you use?
Any tips would be greatly appreciated.
Best regards,
Gustav

Hi Gustav
How is your performance testing of Oracle Retail ? Did you get good results ?
I need to start a RMS/RPM performance testing project and I would like to know how to implement an appropriated structure . Any informations about servers , protocols , tools used to simulate a real production environment would be very appreciated.
Thanks & Regards,
Roberto

Test scenario and test plan

Hi All,
Can somebody explain what is a test scenario and test plan with an eg ( For eg FB 60). and what are the essential things one needs to incorporate for test scenario and a test plan
Appreciate your help.
Thanks
SM

Hi,
I am giving you the information on test plan and test scenario below. Please note that this is with reference to Solution Manager.
You create a test plan for a project in the SAP Solution Manager if you want to reuse the project structure created in the Business Blueprint for a process-oriented test. You can select all the test cases and transactions which you have assigned to the project structure, for the test plan. These test cases are performed by testers; they can call assigned transactions and run test cases in them.
Test Scenarios are nothing but the end to end business processes which are to be tested.
Hope this helps.
Rgds
Manish

How to write utp(unit test plan)

how to write utp(unit test plan)

Hi,
Steps to be followed for UTP.
UTP : Unit Test Plan. Testing the program by the developer who developed the program is termed as Unit Test Plan.
Two aspects are to be considered in UTP.
1. Black Box Testing
2. White Box Testing.
1. Black Box Testing : The program is executed to view the output.
2. White Box Testing : The code is checked for performance tuning and syntax errors.
Follow below mentioned steps.
Black Box Testing
1. Cover all the test scenarios in the test plan. Test plan is usually prepared at the time of Techincal Spec preparation, by the testing team. Make sure that all the scenarios mentioned in the test plan are coverd in UTP.
2. Execute your code for positive and negative test. Postive tests - to execute the code and check if the program works as per expected. Negative Test - Execute code to know if the code is working in scenarios in which it is not supposed to work. The code should work only in the mentioned scenarios and not in all cases.
White Box Testing.
1. Check the Select statments in your code. Check if any redundant fields are being fetched by the select statements.
2. Check If there is any redundant code in the program.
3. Check whether the code adheres to the Coding standards of your client or your company.
4. Check if all the variables are cleared appropriately.
5. Optimize the code by following the performance tuning procedures.
Using tools provided by SAP
1. Check your program using EXTENDED PROGRAM CHECK.
2. Use SQL Trace to estimate the performace and the response of the each statement in the code. If changes are required, mention the same in UTP.
3. Use Runtime Analyser and Code Inspector to test your code.
4. Paste the screen shots of all the tests in the UTP document. This gives a clear picture of the tests conducted on the program.
All the above steps are to be mentioned in UTP.
Regards,
Vara

Payroll - performance testing

We are gearing up for performance testing for active pay and I have a few questions in this regard. What are the most expensive, load bearing programs and transactions that need to be thoroughly performance tested? What is the best way to test performance for an active pay implementation (should tools be used or should users be used to generate load)?
Does anyone have a project plan for active pay performance testing that they are willing to share?

Hello Viviana,
So far in my implementation we have done payroll and time runs for the whole group.
Based on the business:
1. You can prioritize the most common or recurring scenarios. Basically create a test script for every scenario based on the configuration performed.
2. You can also talk to business SME's to find out several scenarios based on their past experience regarding complex payroll calculation, time data processing or any retro scenarios.
3. Once you get the detail outline then setup employees for those test. You can run payroll for the whole group but on parallel validation side, you will still use the same PERNR group you have setup and do the compare.
4. Later on, you can finish postings, TPR and all other subsequent steps for the whole group.
I am insisting on the whole group just to be on safer side.
Perform same study for Off cycle payroll and retro active accounting scenario.
Hope this helps.
Arti

Test Plan for Video Conferencing

We are planning to set up an MPLS network exclusively for video conferencing. I need to prepare a test plan for the tests to conduct to check the conferencing performance and related parameters after the implementation.
I am pretty new in Video conferencing. May someone help me to prepare a test plan for this?

Do you have some more details about the equipment and setup you want to test.

Performance test planning: timing

Similar Messages

Maybe you are looking for