How to measure the performance

Hi all,
I would like to compare the performance of my Webdynpros in different machine. I need to measure the time of execution of my Web dynpro, including execution of some interaction from the user (navigation between the pages, etc). How can I do it? I cannot add any additional code, are there any transaction to measure it?
Thanks a lot,
Anna

Thank you.
I opened this transaction, but I could see only Transaction, Program or Function module to introduce and analyze. How can I measure Webdynpro?
Regards,
Anna

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How to measure the performance of sql query?

Hi Experts,
How to measure the performance, efficiency and cpu cost of a sql query?
What are all the measures available for an sql query?
How to identify i am writing optimal query?
I am using Oracle 9i...
It ll be useful for me to write efficient query....
Thanks & Regards

psram wrote:
Hi Experts,
How to measure the performance, efficiency and cpu cost of a sql query?
What are all the measures available for an sql query?
How to identify i am writing optimal query?
I am using Oracle 9i... You might want to start with a feature of SQL*Plus: The AUTOTRACE (TRACEONLY) option which executes your statement, fetches all records (if there is something to fetch) and shows you some basic statistics information, which include the number of logical I/Os performed, number of sorts etc.
This gives you an indication of the effectiveness of your statement, so that can check how many logical I/Os (and physical reads) had to be performed.
Note however that there are more things to consider, as you've already mentioned: The CPU bit is not included in these statistics, and the work performed by SQL workareas (e.g. by hash joins) is also credited only very limited (number of sorts), but e.g. it doesn't cover any writes to temporary segments due to sort or hash operations spilling to disk etc.
You can use the following approach to get a deeper understanding of the operations performed by each row source:
alter session set statistics_level=all;
alter session set timed_statistics = true;
select /* findme */ ... <your query here>
SELECT
         SUBSTR(LPAD(' ',DEPTH - 1)||OPERATION||' '||OBJECT_NAME,1,40) OPERATION,
         OBJECT_NAME,
         CARDINALITY,
         LAST_OUTPUT_ROWS,
         LAST_CR_BUFFER_GETS,
         LAST_DISK_READS,
         LAST_DISK_WRITES,
FROM     V$SQL_PLAN_STATISTICS_ALL P,
         (SELECT *
          FROM   (SELECT   *
                  FROM     V$SQL
                  WHERE    SQL_TEXT LIKE '%findme%'
                           AND SQL_TEXT NOT LIKE '%V$SQL%'
                           AND PARSING_USER_ID = SYS_CONTEXT('USERENV','CURRENT_USERID')
                  ORDER BY LAST_LOAD_TIME DESC)
          WHERE ROWNUM < 2) S
WHERE    S.HASH_VALUE = P.HASH_VALUE
         AND S.CHILD_NUMBER = P.CHILD_NUMBER
ORDER BY ID
/Check the V$SQL_PLAN_STATISTICS_ALL view for more statistics available. In 10g there is a convenient function DBMS_XPLAN.DISPLAY_CURSOR which can show this information with a single call, but in 9i you need to do it yourself.
Note that "statistics_level=all" adds a significant overhead to the processing, so use with care and only when required:
http://jonathanlewis.wordpress.com/2007/11/25/gather_plan_statistics/
http://jonathanlewis.wordpress.com/2007/04/26/heisenberg/
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

How to measure the performance of a SQL query?

Hello,
I want to measure the performance of a group of SQL queries to compare them, but i don't know how to do it.
Is there any application to do it?
Thanks.

You can use STATSPACK (in 10g its called as AWR - Automatic Workload Repository)
Statspack -> A set of SQL, PL/SQL, and SQL*Plus scripts that allow the collection, automation, storage, and viewing of performance data. This feature has been replaced by the Automatic Workload Repository.
Automatic Workload Repository - Collects, processes, and maintains performance statistics for problem detection and self-tuning purposes
Oracle Database Performance Tuning Guide - Automatic Workload Repository
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14211/autostat.htm#PFGRF02601
or
you can use EXPLAIN PLAN
EXPLAIN PLAN -> A SQL statement that enables examination of the execution plan chosen by the optimizer for DML statements. EXPLAIN PLAN causes the optimizer to choose an execution plan and then to put data describing the plan into a database table.
Oracle Database Performance Tuning Guide - Using EXPLAIN PLAN
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14211/ex_plan.htm#PFGRF009
Oracle Database SQL Reference - EXPLAIN PLAN
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_9010.htm#sthref8881

How to measure the performance of Extractor

Hi,
How to measure the time taken to by the extractor when executed from rsa3 for a given selection?
Lot of threads speak about ST05... but these transactions are too granular to analyse.
How to get the overall time taken.i need the overall time taken and the time taken by the individual SQL statements... please provide specific pointers.
Thanks,
Balaji

Maybe SE30 can help you....
Regards,
Fred

Measuring the Performance

How to measure the Performance of an XI system and also an XI Interface?
What are all the ways we can tune an XI system for an optimal performance? i.e what are all the areas we have to look into for a superior performance?

Pete,
You can check the start time and end time of the message in sxmb_moni and can find out how much time it takes for the interface to execute.
Go to RWB and then click on performance monitoring. You can get for each interface individually or for the whole.
Also go thorugh this documents:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/489f5844-0c01-0010-79be-acc3b52250fd
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/defd5544-0c01-0010-ba88-fd38caee02f7?prtmode=navigate
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/70ada5ef-0201-0010-1f8b-c935e444b0ad
/people/prasad.illapani/blog/2007/04/27/performance-tuning-checks-in-sap-exchange-infrastructurexi-part-iii
http://help.sap.com/saphelp_nw04/helpdata/en/9e/6921e784677d4591053564a8b95e7d/frameset.htm
---Satish

How can i use Bi-Technical Content is used for measuring the performance of

Hi
recenetly i implemented the BI7.0 for one client. I want to know how to use 'BI Administraction Cockpit,.
Actual what technical content does ???
And how can i use technical content or statistics for measuring the performance of my queries. Please let me know
kumar

Hi Ravi,
BI Admin Cockpit is enhancement of BW Statistics.
http://help.sap.com/saphelp_nw2004s/helpdata/en/44/08a75d19e32d2fe10000000a11466f/frameset.htm
Check this thread also:
BI Statistics comparision with the old
Regarding the performance check the link below.
Re: Query - Performance
http://help.sap.com/saphelp_nw2004s/helpdata/en/43/15c54048035a39e10000000a422035/frameset.htm
Regards,
Anil

How to measure the size of an object written by myself?

Hi all,
I'm going to measure the performance on throughput of an ad hoc wireless network that is set up for my project. I wrote a java class that represents a particular data. In order to calculate the throughput, I'm going to send this data objects from one node to another one in the network for a certain time. But I've got a problem with it- How to measure the size of an object that was written by myself in byte or bit in Java? Please help me with it. Thank you very much.

LindaL22 wrote:
wrote a java class that represents a particular data. In order to calculate the throughput, I'm going to send this data "a data" doesn't exist. So there's nothing to measure.
objects from one node to another one in the network for a certain time. But I've got a problem with it- How to measure the size of an object that was written by myself in byte or bit in Java? Not.

How to measure the task instance size

I am trying to understand how to measure the custom task instnace size that was occupied in the cache repository. Is there a way to obtain the size (in KB s ) in lighthouse 4.1 +sp5. Please help.

Hi, Luiz!
In order to estimate the instance size, you will have to sum up all the instance variables size.
From the practical prospective it may be difficult to use the algorithm in cases when your instance variables are not simple types.
For already existing instances, you can look the instance size in the database:
An instance is just a java object, that is serialized as a byte[] and stored in the engine database, PPROCINSTANCE table, column INSTDATA.
You can write a simple program (either java or SQL plus) that would read the instance from the BLOB and measure the size.
And yes, with large instances you can have performance problems.

Measuring the performance of Networking code

Lately I've had renewed interest in Java networking, and been doing some reading on various ways of optimizing networking code.
But then it hit me.
I dont know any way of benchmarking IO/Networking code. To take a simple example, how exactly am I supposed to know if read(buf,i,len) is more efficient than read() ? or how do I know the performance difference between setting sendBufferSize 8k and 32k? etc
1)
When people say "this networking code is faster than that", I assume they are referring to latency. Correct? Obviously these claims need to be verifiable. How do they do that?
2)
I am aware of Java profilers ( http://java-source.net/open-source/profilers), but most of them measure stuff like CPU, memory, heap, etc - I cant seem to find any profiler that measures Networking code. Should I be looking at OS/System level tools? If so, which ones?
I dont want to make the cardinal sin of blindly optimizing because "people say so". I want to measure the performance and see it with my own eyes.
Appreciate the assistance.
Edited by: GizmoC on Apr 23, 2008 11:53 PM

If you're not prepared to assume they know what they're talking about, why do you assume that you know what they're talking about?Ok, so what criteria determine if a certain piece of "networking code" is better/faster than another? My guess is: latency, CPU usage, memory usage - that's all I can think of. Anyway, I think we are derailing here.
The rest of your problem is trivial. All you have to do is time a large download under the various conditions of interest.1)
hmm.. well for my purpose I am mainly interested in latency. I am writing a SOCKS server which is currently encapsulating multiplayer game data. Currently I pay an apprx 100 latency overhead - I dont understand why.. considering both the SOCKS client (my game) and SOCKS server are localhost. And I dont think merely reading a few bytes of SOCKS header information can potentially cause such an overhead.
2)
Let's say I make certain changes to my networking code which results in a slightly faster download - however can I assume that this will also mean lower latency while gaming? Game traffic is extremely sporadic, unlike a regular HTTP download which is a continuous stream of bytes.
3)
"timing a large download" implies that I am using some kind of external mechanism to test my networking performance. Though this sounds like a pragmatic solution, I think there ought to be a formal finely grained test harness that tests networking performance in Java, no?

How to monitor the performance of EBS iAS?

Hello All,
I am looking for your advise on how to monitor the performance of EBS (11i/R12) iAS
How to measure iAS worload during a certain period?
How to know the number of iAS hits/requests?
How to the iAS response time?
Regards,
Tareq

Thanks EBSDBA and Helios for your time.
Are there any scripts/reporting tool that helps me monitor iAS performance other than OEM for EBS?
Note:370583.1 is very helpful in monitoring JDBC connections. Are there any similar Notes/scripts that can answer my questions:
How to measure iAS workload during a certain period?
How to know the number of iAS hits/requests?
How to the iAS response time?
Appreciating your cooperation,
Tareq

How to improve the performance of adobe forms

Hi,
Please give me some suggestions as to how to improve the performance of adobe form?
Right now when I' am doing user events it is working fine for first 6 or 7 user events. From the next
one it is hanging.
I read about Wizard form design approach, how to use the same here.
Thanks,
Aravind

Hi Otto,
The form is created using HCM forms and processes. I' am performing user events in the form.
User events will doa round trip, in which form data will be sent to backend SAP system. Processing will
happen on the ABAP side and result will appear on the form. First 6 or 7 user events works correctly,
the result is appearing on the form. Around 8 or 9th one, the wait symbol appears and the form is not
re-rendered. The form is of size 6 pages. The issue is not coming with form of size 1 page.
I was reading ways to improve performance during re-rendering given below.
http://www.adobe.com/devnet/livecycle/articles/DynamicInteractiveFormPerformance.pdf
It talks about wizard form design approach. But in SFP transaction, I am not seeing any kind of wizard.
Let me know if you need further details.
Thanks,
Aravind

How to measure the baseline of a noisy, pulsed signal

Hi
I am measuring the torque exerted by a large motor on a shaft using a load cell and lever arm. The shaft runs at approx 150 rpm. I have attached a drawing that shows the output I get. This is a test rig.
I have written some code that measures the maximum peak out of a group of approx 5 peaks and writes this to a shift register. This gives me an idea of the maximum torque "spike".
I also wish to measure the baseline torque (due to the bearings in the machine). Even when highly filtered (my noise filter is set to 49Hz) the signal exhibits this noise which is probably due to vibration in the system. The signal is zeroed when the motor is not running.
Does anyone have an ideas on how to measure the "baseline" torque? The large spike in torque prevents me from doing a running average. Can anyone think of a way of averaging just the noisy part of the signal to get an average value? I aim to to subtract the average baseline torque from the peak value to get an idea of the torque due to the event which causes
the spike.
Any help would be greatly appreciated.
Many thanks.
Attachments:
drawing of torque signal.gif ‏26 KB

Thanks for the reply. I understand what you are saying. However, I might have to modify my method for measuring the peaks if I choose to implement your idea. I have taken a screenshot of my "peak finder" code and attached it.
Bascially, the reset terminal is wired to a timer which outputs a pulse every few seconds. This resets the vi (a standard NI one I think) and sets the peak magnitude back to zero. This way, I am windowing the signal and measuring the maximum peak in every window. This is what I need to do.
So I could use a logical filter to feed data to the running average only if;
the amplitude of the signal is less than a certain threshold
and if the current value has similar low peaks either side of it
How would you construct the code to delay the evaluation so that the values in front and behind of the current data point can be analysed?
thanks again
Attachments:
peak_find_screenshot.jpg ‏45 KB

Do you have an idea how to improve the performance ?

Hi All,
Greeting,
I'm doing SEM IP. Regarding the performance, do you have some thought about this ?
So I have planning report for project report . As we know, if we forecast against project, means the date itself is the life of the project itself.
It means it could be more than 10 years (forecast period) and 10 years (actual period). Currently I segregate between actual and forecast into different info cube .
But the performance of the planning report is slow now. Do you have an idea about this how to increase the performance. The performance I mentioned here is when we're going to the report (after putting in the value in the selection screen).
The other question, at this moment, I have a multiprovider than this multi provider consist 2 info cubes ( actual and forecast ). Than my aggregation is sitting on top of that multi-provider .
My question whether that's approach correct or not ? Or do we have to create 1 aggregate (only for forecast), than I have multi-provider consisting forecasting aggregation and actual cube .
than my query will sit on top of that multi-provider ?
Which one is better ??
Thanks a lot all,
really need your help,

Hi,
For the performance tuning, you can consider any of the following three methods,
1. Indices
With an increasing number of data records in the InfoCube, not only the load but also the query performance can be reduced. This is attributed to the increasing demands on the system for maintaining indexes. The indexes that are created in the fact table for each dimension allow you to easily find and select the data.
2. Partitioning
By using partitioning you can split up the whole dataset for an InfoCube into several, smaller, physically independent and redundancy-free units. Thanks to this separation, performance is increased when reporting, or also when deleting data from the InfoCube.
3. Aggregates
Aggregates make it possible to access InfoCube data quickly in Reporting. Aggregates serve, in a similar way to database indexes, to improve performance.
4. Compressing the Infocube
Infocube compression means aggregation of the data ignoring the request idu2019s. After compression, the system need not perform aggregation using the request ID every time you execute a query.
And I feel that as per your scenario, you need to do first compress the data based on user requirements and have only the required data in the infocube.
And for the approach regarding the Aggregation level design, choosing between the two approaches depends on the user requirements. For example,
If you have aggregation level created on top of multiprovider containing actual and forecast cube, in your report (created on top of aggregation level) you can view the key figure values present in both the cubes, which is not possible in the other approach.
So this approach is suited if your requirement is to view the records from both the cubes in your report (Comparing planning and actual values).
The second approach is used if your requirement is only to report on planning forecast cube.
Hopes this solves your issue.
Regards,
Balajee

How to Improve the performance in Variable Selection Screen.

Hi,
In Query Level we have Variable " User entry Defalt Valu". User want select particular value when he press "F4" it's take hours time how to improve the performance in Varaible Selection Screen.
Thanks in Advance.
Regards,
Venkat.

Dear Venkat.
You please try the following steps:
1. Say the InfoObject is 0EMPLOYEE against which you have created the variable, which user is trying to select value against, when they execute the report.
2. Goto RSA1-> InfoObject tab-> Select InfoObject 0EMPLOYEE.
3. Selcet the following options:
Query Execution Filter Val. Selectn - 'Only Posted Value for Navigation'
Filter Value Repr. At Query Exec. - 'Selector Box Without Values'
Please let me know if there is any more issue. Feel free to raise further concern
Thnx,
Sukdev K

How to improve the performance of one program in one select query

Hi,
I am facing performance issue in one program. I have given some part of the code of the program.
it is taking much time below select query. How to improve the performance.
Quick response is highly appreciated.
Program code
DATA: BEGIN OF t_dels_tvpod OCCURS 100,
vbeln LIKE tvpod-vbeln,
posnr LIKE tvpod-posnr,
lfimg_diff LIKE tvpod-lfimg_diff,
calcu LIKE tvpod-calcu,
podmg LIKE tvpod-podmg,
uecha LIKE lips-uecha,
pstyv LIKE lips-pstyv,
xchar LIKE lips-xchar,
grund LIKE tvpod-grund,
END OF t_dels_tvpod,
DATA: l_tabix LIKE sy-tabix,
lt_dels_tvpod LIKE t_dels_tvpod OCCURS 10 WITH HEADER LINE,
ls_dels_tvpod LIKE t_dels_tvpod.
SELECT vbeln INTO TABLE lt_dels_tvpod FROM likp
FOR ALL ENTRIES IN t_dels_tvpod
WHERE vbeln = t_dels_tvpod-vbeln
AND erdat IN s_erdat
AND bldat IN s_bldat
AND podat IN s_podat
AND ernam IN s_ernam
AND kunnr IN s_kunnr
AND vkorg IN s_vkorg
AND vstel IN s_vstel
AND lfart NOT IN r_del_types_exclude.
Waiting for quick response.
Best regards,
BDP

Bansidhar,
1) You need to add a check to make sure that internal table t_dels_tvpod (used in the FOR ALL ENTRIES clause) is not blank. If it is blank skip the SELECt statement.
2) Check the performance with and without clause 'AND lfart NOT IN r_del_types_exclude'. Sometimes NOT causes the select statement to not use the index. Instead of 'lfart NOT IN r_del_types_exclude' use 'lfart IN r_del_types_exclude' and build r_del_types_exclude by using r_del_types_exclude-sign = 'E' instead of 'I'.
3) Make sure that the table used in the FOR ALL ENTRIES clause has unique delivery numbers.
Try doing something like this.
TYPES: BEGIN OF ty_del_types_exclude,
         sign(1)   TYPE c,
         option(2) TYPE c,
         low       TYPE likp-lfart,
         high      TYPE likp-lfart,
       END OF ty_del_types_exclude.
DATA: w_del_types_exclude TYPE          ty_del_types_exclude,
      t_del_types_exclude TYPE TABLE OF ty_del_types_exclude,
      t_dels_tvpod_tmp    LIKE TABLE OF t_dels_tvpod        .
IF NOT t_dels_tvpod[] IS INITIAL.
* Assuming that I would like to exclude delivery types 'LP' and 'LPP'
CLEAR w_del_types_exclude.
REFRESH t_del_types_exclude.
w_del_types_exclude-sign = 'E'.
w_del_types_exclude-option = 'EQ'.
w_del_types_exclude-low = 'LP'.
APPEND w_del_types_exclude TO t_del_types_exclude.
w_del_types_exclude-low = 'LPP'.
APPEND w_del_types_exclude TO t_del_types_exclude.
t_dels_tvpod_tmp[] = t_dels_tvpod[].
SORT t_dels_tvpod_tmp BY vbeln.
DELETE ADJACENT DUPLICATES FROM t_dels_tvpod_tmp
    COMPARING
      vbeln.
SELECT vbeln
    FROM likp
    INTO TABLE lt_dels_tvpod
    FOR ALL ENTRIES IN t_dels_tvpod_tmp
    WHERE vbeln EQ t_dels_tvpod_tmp-vbeln
    AND erdat IN s_erdat
    AND bldat IN s_bldat
    AND podat IN s_podat
    AND ernam IN s_ernam
    AND kunnr IN s_kunnr
    AND vkorg IN s_vkorg
    AND vstel IN s_vstel
    AND lfart IN t_del_types_exclude.
ENDIF.

How to measure the performance

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