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Performance Parts

by bflamingo

Cloud Performance Testing and Web Load Testing

Internet has fundamentally changed the way we do business in 21st Century. The usage of internet, its applications, business models and marketing names keep changing   regularly. It has moved from Internet to WEB, Online, ecommerce, WEB 2.0, ASP, SaaS, PaaS, Cloud, Private Cloud, Public Cloud ….   So on and so forth.

The bandwidth has increased tremendously due to fiber, computing speeds have increased many folds, storage capacity gets cheaper and larger, changing end user appliance from desktop computer to laptop to tablets / iPAD and smart phones.

World has become well connected and a smaller place, thanks to CLOUD
Business engages with its Customers, Employees, Vendors on the Cloud so its essential that the applications are available and performing on their appliances and networks.

•    Availability on Server Side
•    Availability on Client Side
•    Acceptable response times
•    Secured Access and Transaction Completion

IT teams are responsible for ensuring availability and response times on server side, the areas under their control. However it is important for Business to know whether application is available and working for Customers. After all the investments in IT is to help Business. Business either depends on Cloud for

•    Revenues
•    Reduced Cost of Sales
•    Reduced Cost of Support
•    24×7 Channel availability
•    Reduce Cost of Document distribution, Marketing and Information Sharing
•    Brand Building
•    Reduced cost of operations like – AP, AR, Employee Portal, Vendor Portal
You may not have full control on all elements in the Cloud, however you should have knowledge and information of its Performance in order to
•    Drive Vendor SLA
•    Make informed decisions on investment and partner/vendor selection in future

If it’s end-to-end need to have some visibility and control or access to various points in the chain. Which component should you be concentrating your efforts on based upon what the Bank owns and controls?

•    Cloud Applications
•    Appliances and Operating Systems
•    Browsers ( IE, Firefox, Safari, Chrome, Mobile browsers)
•    ISP, Multiple carriers and locations
•    Server side components

The Cloud Performance Management Solutions includes

•    Load and Stress Testing
•    Cloud Load Testing from actual end users
•    Web Load Testing using Synthetic Load Generators
•    Cross Browser Testing
•    Bandwidth Testing and Optimization
•    Performance Tuning and Optimization
•    24×7 Monitoring from Cloud
•    SLA Monitoring

Experienced teams who have done these <a rel=”nofollow” onclick=”javascript:_gaq.push(['_trackPageview', '/outgoing/article_exit_link']);” href=”http://performancesight.com/”>performance testing</a> and monitoring will be in better position to quickly get the job done quickly and appropriately for you.

Please visit our Edelbrock, Performance Parts, and Comp Cams vendor. Doug Herbert Performance Parts Centers

Performance Parts

by baslow

SAP Performance Testing, SAP Load Testing and SAP Benchmarks

SAP Performance benchmarks have been around since 1993, the purpose of these benchmarks is essentially to flex the power muscle of Hardware and Software, in this case SAP. The use of such benchmarks is for capacity sizing, establishing scalability of software and compute power of hardware as well as marketing collateral.

However these benchmarks are of not much use to actual SAP end customer to establish performance of their implementation. Actual implementation is not run in ideal benchmark environment, SAP architecture and modules are different, configuration, coding, implementation, hardware, DB etc. are all different and it’s highly customized for your business and environment.

How much is SAP Performance of implementation at your site?
How does it compare to benchmarks published by SAP/Hardware/DB vendor?

How does it compare to others in Industry?
So can you simply run Loadrunner scripts and do a SAP Load Testing to ensure Performance? We all wish!!

How much is the response time to your end user? Is it acceptable? Usually not. It takes some time to optimize, tune and get better performance out of SAP.

SAP Performance Testing can be a fairly involved exercise and here is a simple example.

You may be using SAP Netweaver Web Portal, SAP SOA or SAP R/3 platform, doing new implementation or upgrades to software, modules, DB or hardware.

You may be using SAP Business Suite, ERP, CRM, SCM, PLM or SRM.

You may be using SAP Crystal Reports, BI or Data Warehouse.

You may be using SAP ABAP Client/Server implementation using various Modules like FI, CO, AM, TR, HR, MM, PP, SD, PM, QM etc.

So now you can see how SAP Performance Testing can become challenging task and need to work with SME and other teams.

There are several ways to improve the performance – or scalability – of your system:

•    Add hardware by adding application servers, adding CPUs/memory to the server(s). The only issue is that you are trying to solve problem without knowing root cause – you do not really exercise control over the system and the solution may not be sustainable as well as expensive.
•    Tune the system, for example the profile parameters, or you may increase the buffer sizes to improve response times.
•    To modify the business process by re-scheduling load so that you can distribute load more evenly across servers and time.
•    Tuning the application by analyzing and improving Customizing, configuration, functions and performance is much more sustainable but requires business knowledge as well software expertise.
•    The last choice is to optimize the coding, which requires application and software knowledge. This can be very time consuming and requires SAP and local implementation expertise, testing and retesting, adds risk to the schedule.

If you have experts and teams available with leisure of schedule and budget then this might be best approach.
Other basic tenets of performance testing applies to <a rel=”nofollow” onclick=”javascript:_gaq.push(['_trackPageview', '/outgoing/article_exit_link']);” href=”http://performancesight.com/SAP (ERP, NetWeaver, SCM)-p-47.php”>SAP performance testing</a> also, like suitable staging environment or pre-production environment, suitable tools, business scenarios, load profiles etc.

Please visit our Edelbrock, Performance Parts, and Comp Cams vendor. Doug Herbert Performance Parts Centers

Your company is rolling out the new web application. This web application is well designed and attractive. It was also tested by your quality? Assurance group. You spent a lot of money marketing your new website. The website is now live. Very soon you realize that your new web application, your typical production load and response times and performance reach scale v? Llig unacceptable levels. Your Web logs show that most visitors to your site just leave the new site before buying anything since its response times are very poor. You start to panic, and one of your friends tells you that the reason does not execute your application? HRT is appropriate that you do not? About Gene? Neighborhood hardware. This h? While, you decide hinzuzuf more server hardware? Gen. While this has little effect on the website response time, it is still v? Llig inadequate. They soon realize that problem does not really lie with the hardware, but rather from the web application itself. It appears that your Web application is not good f? R optimizes the typical peak loads. It is increasingly clear that most of your marketing dollars have been wasted. Enter the world of performance and load tests. To ensure that your application scales as the load increases, it is necessary, Pr tests?, For which the application against a simulated load? Resembles the tats? Load floor lord, that if it be at the Au? Exposed exposed enwelt is tested is lead durchzuf?. It is important to distinguish between functional or regression testing and load or performance testing. Functional and regression testing is used to automate a large? E number of scenarios to ensure that your site such as weight work? Encouraged. Stress test on the other hand gauges how well execute your site? Executed when there is a big e load, like a big number of e concurrent users undergo. Load and performance tests require the use of automated testing tools. It is impractical, if not l? Cherlich to try to simulate a load of 200 concurrent users by a group of 200 people sit on 200 machines and try to lead operations execute simultaneously?. Before any type of load and performance testing can start k?, M? You need the test scenarios m? You need to automate identified. A load test tool is generally based record search requests and responses to user interactions with a Web page. How you perform various operations on your website or application may be stated?, Draws the tool all web transactions that take place. When you finish recording, it generates an automated script. Alternatively, please can the tool manually create the script. Typically, testers f? Carried a combination of both. They will create the recording mechanism on the skeletal system foundation for their scripts and then manually? Modify the scripts to famous cksichtigen specific scenarios are increasing. The load testing tool to simulate the bandwidth tester Reduced? Nkt situations. This means, for example, that there used to model exactly user, the application on a slow modem connection gestures w?. He is also the testers, the script down to hard drive with feeding? Lligen data from big s external data sets?. Load testing scripts k? Can either graphical or textual in nature. Good load and performance testing tools do not require the tester programmer. Testers who are not familiar with programming will work with scripts are edited graphically, k can?. Graphical script is usually all recorded shows steps in a hierarchical structure and Tester w? Rde one of the steps to modify to modify the recorded script to?. Tester, the GE? Bt able to program k? Do you manipulate their scripts by editing the code. This tester w rde written? With code in a known programming language such as JavaScript, VBScript or C work Once your script has been created way you want it to specialized controls introduced? Leads. These controls w? Gestures usually are specific to the application being tested here. For example, m? You like, perhaps? Berpr Fen? Whether the reaction by a specific web request to? Returned into erf? Filled some editorial criteria. This w rde? The placement of a text checkpoint. A text checkpoint can k? Fen? Berpr? Whether a particular passage is present or not present in a particular part of the web page. After you create the script you normally test w? Rde the script on your own computer as a single user to weight? Hrleisten that the test script as l thought? Runs completed. You are now ready to lead, a performance based load test carrying?. A good load testing tool makes? It glitches the tester to fine tune the exemplary? Currency of the test. This means that it makes? The testers glitches on the number of concurrent virtual users, w, please choose how the script on ramps, as it ramps down and how long l? Running. He should f the tester? R different groups of concurrent virtual users who have their own ramp to provide constant and ramp characteristics. A good test tool makes it? It glitches the user, this load over several machines since a single machine can distribute only able to scale up to several hundred users. To understand the behavior of the loaded web application it is also essential f? r the load testing tool to the tester compared to erm? to the performance of external components such as operating systems, web servers, databases, etc. This shall enable? the users to see how the title Erf? filling his application correlates with the performance characteristics of the external component. This type of analysis will allow the tester to determine the cause of performance bottlenecks? Must fairly easy to identify. should be W? during the Test Procedure? guide the testers able to improve the performance f graphics in real time? r performance metrics such as the transaction response time view shared HTTP responses per second HTTP code groups (eg 200, 404, 500 etc .) transactions per second, failed transactions per second, total transactions per second, requests per second, pages per second etc. The tester should also be described simultaneously view the performance of the external components downloaded above. F? R k nnte an operating system? Something like the% processor time, f? R k nnte a database? The number of his Schreibvorg? Length per second. At the end of the test w? Gestures the testers be able to see and save this data as a report for further analysis of the rule. Load and performance tests erm? It matched you to simulate the behavior of your application under a typical production environment. This makes it? Glitches you to plan your hardware implementation strategy effectively and ensure that your application to deliver the expected performance characteristics. Rolling out a Web application without Pr? Examination of their performance under expected production loads? Resemble w? Rde? Berque a street e blindfolded. Load testing is an essential part of the development cycle of a Web application, and should never be forgotten.

please visit our Racing Parts partner. Doug Herbert Performance Parts Centers

Product (5) 3 / 8 “fork Hooks6, 600 lbs Working Load Limit1. 10 lbs26, 400 lbs Breaking Strength

Pack of 5 3 / 8 “fork Hook 6600 lb Work Load Limit Freight

Image taken on 2009-04-30 21:41:03 by brewbooks.