Stress Test Software

Hello,
I like to stress test my Oracle 9i database, can someone recommend a software for stress testing. Thank you.

There are a variety of third party load test tools available, generally part of a suite of QA tools. You can also build your own test harnass.
99% of the work, however, is in figuring out what to run to put a representative stress on your application and, thus, your database. Figure out a representative number of OLTP users, a representative number of DSS users, an appropriate overlap in time and in data, etc.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Similar Messages

Is there stress testing software for the Mac?

I am looking for a stress-testing program for OSX. Something that would press a computer to it's limits and make it crash faster, if it's supposed to crash intermittently. Can anyone suggest such a program for the Macintosh?
iMac G4 Mac OS X (10.4.6)

Hi, T.M.
If you're looking to troubleshoot an intermittent problem that may be hardware-related, See my "Apple Hardware Test" FAQ for comprehensive advice on using the Apple Hardware Test in troubleshooting, including running the test in Loop Mode.
There is also Xbench, a performance benchmarking tool.
More details as to what prompts your question might help.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

Where can I find out of the box Directory (LDAP) Server Stress Testing Software?

You can download the iPlanet Directory Server Resource Kit 5.1 from http://wwws.sun.com/software/download/developer/5175.html which contain some stress tools...
Or you can check DirectoryMark from MindCraft (Directory Server benchmarking tool)
Regards,
Ludovic

Exception only occuring during stress test

We are trying to get ready to release a beta version of the software I'm working on.. so part of getting ready for that was to try set up some stress tests and hit the server with multiple requests for the same page....
Not sure exactly how many it is taking but we are getting the following exception.
2005-06-10 13:20:23 StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
java.lang.NumberFormatException: For input string: "200044.E2000444E"
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
        at java.lang.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1207)
        at java.lang.Double.parseDouble(Double.java:220)
        at java.text.DigitList.getDouble(DigitList.java:127)
        at java.text.DecimalFormat.parse(DecimalFormat.java:1070)
        at java.text.SimpleDateFormat.subParse(SimpleDateFormat.java:1386)
        at java.text.SimpleDateFormat.parse(SimpleDateFormat.java:1156)
        at java.text.DateFormat.parse(DateFormat.java:333)
        at com.xxxxx.xxxxx.struts.adapter.BrowseBaseAdapter.formatYyyyMMddToLocaleStr(BrowseBaseAdapter.java:194)I can only assume that something was not thread safe and somehow something is getting confused....
this is the method that produced the error and the code that it runs.
I know absolutely nothing about making something thread safe.... can anyone give me good link to refer to or point something out in the below code that might be a no no.
private static final SimpleDateFormat xxxxxxxxDateFormat =
          new SimpleDateFormat("yyyyMMdd");
     protected String formatYyyyMMddToLocaleStr(
          String xxxxxxxxDt,
          Locale locale) {
          String result = "";
          if ( xxxxxxxxDt != null && xxxxxxxxDt.length() == 8) {
               try {
                    Date tempDate = xxxxxxxxDateFormat.parse( xxxxxxxxDt);
                    result = javaDataTypeToString(tempDate, locale);
               } catch (ParseException ex) {
          return result;
public String javaDataTypeToString(Object data, Locale locale) {
          String returnType = data.getClass().getName();
          String result = null;
          if (returnType.equals("java.lang.String")) {
               result = (String) data;
          } else if (returnType.equals("java.lang.Float")) {
               NumberFormat formatter = NumberFormat.getNumberInstance(locale);
               formatter.setMaximumFractionDigits(6);
               formatter.setGroupingUsed(false);
               result = formatter.format((Float) data);
          } else if (returnType.equals("java.lang.Double")
                    || returnType.equals("java.math.BigDecimal")) {
               NumberFormat formatter = NumberFormat.getNumberInstance(locale);
               formatter.setMaximumFractionDigits(13);
               formatter.setGroupingUsed(false);
               StringBuffer buffer = new StringBuffer();
               result = formatter.format(data, buffer, new FieldPosition(0))
                         .toString();
          } else if (returnType.equals("java.lang.Integer")) {
               Integer inte = (Integer) data;
               int intVal = inte.intValue();
               if (intVal != 0)
                    result = String.valueOf(intVal);
               else
                    result = "";
          } else if (returnType.equals("java.util.Date")) {
               java.util.Date date = (java.util.Date) data;
               SimpleDateFormat dateFormatter = getDatePattern(locale);
               result = dateFormatter.format(date);
          } else if (returnType.equals("com.sungard.stnweb.utility.Time")) {
               Time time = (Time) data;
               result = time.asString();
          } else if (returnType.equals("java.lang.Boolean")) {
               Boolean dataBool = (Boolean) data;
               if (dataBool.booleanValue())
                    result = "1";
               else
                    result = "";
          return result;

From the API on java.text.SimpleDateFormat
Synchronization
Date formats are not synchronized. It is recommended to create separate
format instances for each thread. If multiple threads access a format
concurrently, it must be synchronized externally. Being static, your date format object will be accessed by multiple threads.
Solution: Don't make the date format object static.
I would suggest like this:
private static final String dfString ="yyyyMMdd";
protected String formatYyyyMMddToLocaleStr(String xxxxxxxxDt, Locale locale) {
String result = "";
SimpleDateFormat xxxxxxxxDateFormat = new SimpleDateFormat(dfString );
if ( xxxxxxxxDt != null && xxxxxxxxDt.length() == 8) {
try {
    Date tempDate = xxxxxxxxDateFormat.parse( xxxxxxxxDt);
    result = javaDataTypeToString(tempDate, locale);
catch (ParseException ex) {}
          return result;
Ok, so it is constructing a DateFormatting object for each method call, but I don't see it as that big a deal. Its not a huge hit. You might get away with making it an instance variable - I don't know how you use the enclosing class. Start with this, and see if it works.
Cheers,
evnafets

Stress Test Oracle 9i

Hello,
I want to perform stress tests on my Oracle 9i database. Is there a software that you can recommend to use. Maybe even scripts or shareware. Thank you.

There are a variety of third party load test tools available, generally part of a suite of QA tools. You can also build your own test harnass.
99% of the work, however, is in figuring out what to run to put a representative stress on your application and, thus, your database. Figure out a representative number of OLTP users, a representative number of DSS users, an appropriate overlap in time and in data, etc.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Web Service stress testing for a JCAPs hosted WS

We are starting development on web services to be hosted in JCAPs and are looking for ideas as to how to stress test. Please respond this thread with any ideas or software solutions.

Take a look at www.soapui.org.

Load / Stress Testing

Hello all. I am going to be running some tests on a standalone Tomcat 6 server which runs a couple of web apps i have written. I just wanted to ask for any advice on how to load/stress test, weather its and good software used, what to look out for or what the typical bottlenecks can be.
I understand every problem is different and unique but as this is my first time doing this i was looking for any helpful tips!
Thanks for any help given!

Sir_Dori wrote:
Hello all. I am going to be running some tests on a standalone Tomcat 6 server which runs a couple of web apps i have written. I just wanted to ask for any advice on how to load/stress test, weather its and good software used, what to look out for or what the typical bottlenecks can be.
I understand every problem is different and unique but as this is my first time doing this i was looking for any helpful tips!
Thanks for any help given!You can check out open source options such as http://ripplet.sourceforge.net/ or a commercial offering such as HP's LoadRunner. Typical bottlenecks involve scarce resources (database connections, incoming sockets, file space, memory, threads, CPU. etc) It varies a lot. You certainly want some aspects of your application to handle high load (such as authenticating or re-authenticating a user, displaying layout and content other than the body of the page, etc.) After that, it really depends on your application.
- Saish

Database base storage stress test

Hi,
I have a ucm 11g instance up and running with SSO.
I need to test database storage against filesystem storage.
Does anyone have any suggestions on how to test this?
Also I'm sure I read somewhere (but I can't find it now) that once I go in one direction I can't go back, does anyone have any details about this?
Many thanks
James

First of all, take a look at File Store Provider (here: http://download.oracle.com/docs/cd/E14571_01/doc.1111/e10792/c02_settings005.htm#CSMSP445)
In general, filesystem storage is always used even if you store data in the database, in the end. It is, though, understood as a temporary storage. In theory, you can keep your files in both locations and I see no reason why you should not be able to go from FS to DB and back, BUT you have to consider consequences (you might have to rebuild indexes or even migrate data from one storage to the other).
As for stress tests, first you have to decide WHAT you want to test. Potential candidates are:
- checkin of a single item (wasted effort: since FS is always used as an intermediate storage it will always be a bit faster)
- mass checkin (e.g. from Batch Loader - especially if you use Fast Checkin settings, db can be a bit faster, but you will need a real lot of small files)
- search
- update (metadata - wasted effort: should be the same)
- backup
- migration of content
Then, you will have to setup two environments with more-or-less the same conditions (CPU power, memory, disk speed).
And finally, you will have to create and run you test cases. I'd suggest to automate stress tests via writing a program calling the same services with the same data. Use WebServices (if non-Java) or RIDC (if Java).
Alternatively, if your task is "to get results" rather than "perform stress tests", you could try to approach consulting services or project managers to provide some normalized results for you. Something can be obtained in this whitepaper: http://www.oracle.com/us/products/middleware/content-management/ecm-extreme-performance-wp-077977.pdf

V I Engineering, Inc has immediate needs for Systems Engineers (Contract) and Senior Systems Engineers (Contract) (reporting to the Test Software and Integration Group Manager)

Company: V I Engineering, Inc.
Locations: Various - USA
Salary/Wage: $negotiable
Status: Hourly Contractor
Relevant Work Experience: 5+ years system integration (LabVIEW/TestStand experience required)
Career Level: Intermediate/Experienced
Education Level: Bachelor's Degree
Residency/Citizenship: USA Citizenship or Greencard required
Driving Business Results through Test Engineering
V I Engineering, Inc. has a vision for every client we engage. That vision is to achieve on-time and on-budget program launch more efficiently that the competition. To realize this vision, customers need to achieve predictable test systems development, eliminate waste in test information management, and drive increased leverage of test assets. An underlying requirement for all of these areas is metrics tracking and measurement based decision making.
Job Description
Ready to make a difference? Bring your experiences and skills to the industry leading test organization. Help us to continue to shape the way the world views test. We are seeking a talented Systems Engineer Contractor to be responsible for technical execution of successful projects in the Medical, Military, Transportation, Consumer Electronics and Aerospace Industries. The position will have very high visibility to customers and vendors. This is a very fast paced team with close customer contact and strong career development opportunities. A large part of the position is to identify, own and drive technical design, development and installation of test systems. You will work alongside other like-minded and equally talented engineers, and be creative in a fast-paced and flexible environment that encourages you to think outside the box. You will be available to spend extended periods at our customer sites to complete system installations.
Required
5+ years of Systems Integration experience
3+ years LabVIEW experience
1+ years TestStand experience
Experience in Implementation and Delivery of Test Systems, including integration
Experience in ATE usage and development
Experience in building and Integrating Mechanical Fixtures
Experience in Understanding the design of Circuit Boards as they relate to a total system, and their fault-finding
Experience in Taking Part in Technical Teams throughout All Phases of Project Lifecycle
Experience in Interfacing with Sub-vendors and Customers
Ability to Multitask
Comfortable Working on Various Team Sizes
Excellent Communication Skills
Desired
Requirements generation and review experience
National Instruments Hardware knowledge
Experience with Source Code Control (SCC)
Experience executing verification and validation for projects
Experience generating and/or reviewing cost proposals
RF Technology (DAQ, General RF Theory)
FPGA (with LabVIEW)
Professional software engineering processes and metrics experience
TortoiseSVN
V I Package Manager (VIPM)
Experience with Projects for Regulated Industries
MS Project
Formal Education
Technical degree (BS Engineering, Computer Science, Physics, Math)
National Instruments Courses a plus
National Instruments certification a plus
Notes:
Expected Travel Time is up to 50%.
V I Engineering, Inc. offers a dynamic work environment and the flexibility of a small company.
The Test Software and Integration Group values innovation, out-of-the-box thinking, high-tech toys and a fun / amazingly collaborative working environment. We're a National Instruments Select Integrator, and we're the closest you can get to playing with all the pre-released and new NI toys without joining the NI R&D team - and we get to play with them in the real world.
To apply for this position, email a cover letter and resume to [email protected] with the subject "TSIG Systems Engineer (Contract) employment application".
Copyright © 2004-2015 Christopher G. Relf. Some Rights Reserved. This posting is licensed under a Creative Commons Attribution 2.5 License.

Edit
Jeff

V I Engineering, Inc has immediate needs for Systems Engineers and Senior Systems Engineers (reporting to the Test Software and Integration Group Manager)

Company: V I Engineering, Inc.
Locations: Positions available in our Farmington Hills, MI Office
Salary/Wage: $negotiable
Status: Full Time, Employee
Relevant Work Experience: 5+ years system integration (LabVIEW/TestStand experience preferred, but not required)
Career Level: Intermediate (Non-Manager)
Education Level: Bachelor's Degree
Residency/Citizenship: USA Citizenship or Greencard required
Driving Business Results through Test Engineering
V I Engineering, Inc. has a vision for every client we engage. That vision is to achieve on-time and on-budget program launch more efficiently that the competition. To realize this vision, customers need to achieve predictable test systems development, eliminate waste in test information management, and drive increased leverage of test assets. An underlying requirement for all of these areas is metrics tracking and measurement based decision making.
Job Description
Ready to make a difference? Bring your experiences and skills to the industry leading test organization. Help us to continue to shape the way the world views test. We are seeking a talented Systems Engineer to be responsible for technical execution of successful projects in the Medical, Military, Transportation, Consumer Electronics and Aerospace Industries. The position will have high visibility to customers and vendors. This is a very fast paced team with close customer contact and strong career development opportunities. A large part of the position is to identify, own and drive technical design and development of test systems. You will work alongside other like-minded and equally talented engineers, and be creative in a fast-paced and flexible environment that encourages you to think outside the box.
Required
5+ years of Systems Integration experience
Experience in Design and Implementation of Test Systems, including integration
Experience in ATE usage and development
Experience in reviewing of Mechanical Fixtures
Experience in understanding the design of Circuit Boards as they relate to a total system
Experience in Taking Part in Technical Teams throughout All Phases of Project Lifecycle
Experience in Interfacing with Sub-vendors and Customers
Ability to Multitask
Comfortable Working on Various Team Sizes
Excellent Communication Skills
Desired
Requirements generation and review experience
National Instruments Hardware knowledge
LabVIEW/TestStand experience
Experience with Source Code Control (SCC)
Experience executing verification and validation for projects
Experience generating and/or reviewing cost proposals
RF Technology (DAQ, General RF Theory)
FPGA (with LabVIEW)
Professional software engineering processes and metrics experience (statement coverage, code size, reuse measurement, etc)
TortoiseSVN
V I Package Manager (VIPM)
UML
Experience with Projects for Regulated Industries
MS Project
Formal Education
Technical degree (BS Engineering, Computer Science, Physics, Math)
National Instruments Courses a plus
National Instruments certification a plus
Notes:
Expected Travel Time is up to 25%Re
location assistance is possible.
V I Engineering, Inc. offers incredible opportunities to grow and advance your career, a dynamic work environment and the flexibility of a small company.
The Test Software and Integration Group values innovation, out-of-the-box thinking, high-tech toys and a fun / amazingly collaborative working environment. We're a National Instruments Select Integrator, and we're the closest you can get to playing with all the pre-released and new NI toys without joining the NI R&D team - and we get to play with them in the real world.
To apply for this position, email a cover letter and resume to [email protected] with the subject "TSIG Systems Engineer employment application".
Copyright © 2004-2015 Christopher G. Relf. Some Rights Reserved. This posting is licensed under a Creative Commons Attribution 2.5 License.

Edit
Jeff

Error in running Jasper Reports for more than 100 users in stress test

I have created a web application with Jasper reports. during the stress test, we were able to run the same report simultaneously for 100 concurrent users, after that we get the following error. I hope there is no problem in my code (correct me if i am wrong)
We use Web Sphere
The error we get is as follows:
java.io.FileNotFoundException: /apps/HewittProjects/installedApps/TBIA/workforce_CUR.ear/workforceServer4.16.4.war/reports/timesheet_mgr2.jasper (Too many open files)
           at java.io.FileInputStream.open(Native Method)
           at java.io.FileInputStream.(FileInputStream.java:106)
           at com.wily.introscope.agent.probe.io.ManagedFileInputStream.(ManagedFileInputStream.java:89)
           at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:85)
           at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:64)
           at com.workforcesoftware.servlets.ReportServlet2.getCompiledReport(ReportServlet2.java:712)
           at com.workforcesoftware.servlets.ReportServlet2.doPost(ReportServlet2.java:423)
           at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
           at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
           at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
           at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
           at com.ibm.ws.webcontainer.servlet.ServicingServletState.service(StrictLifecycleServlet.java:333)
           at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
           at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
           at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
           at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
           at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:61)
           at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:1009)
           at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:529)
           at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:208)
           at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:134)
           at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:321)
           at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
           at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:120)
           at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:250)
           at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
           at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
           at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:652)
           at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:448)
           at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:937)
NESTED BY :
net.sf.jasperreports.engine.JRException: Error loading object from file : /apps/HewittProjects/installedApps/TBIA/workforce_CUR.ear/workforceServer4.16.4.war/reports/timesheet_mgr2.jasper
           at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:92)
           at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:64)
           at com.workforcesoftware.servlets.ReportServlet2.getCompiledReport(ReportServlet2.java:712)
           at com.workforcesoftware.servlets.ReportServlet2.doPost(ReportServlet2.java:423)
           at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
           at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
           at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
           at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
           at com.ibm.ws.webcontainer.servlet.ServicingServletState.service(StrictLifecycleServlet.java:333)
           at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
           at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
           at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
           at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
           at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:61)
           at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:1009)
           at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:529)
           at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:208)
           at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:134)
           at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:321)
           at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
           at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:120)
           at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:250)
           at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
           at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
           at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:652)
           at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:448)
           at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:937)
if this really cannot find the file, then how could it run successfully for 100 users?
Have anyone experienced this problem?
Thanks for your help.

ummm seems odd to have 100 users making a report.. that can be the limitation of your application..

User is thrown from the Application under Cluster stress test

Hi All,
i have ADF/ADF faces application running on WLS 10.3.5.0 Cluster Environment (with 2 nodes).
I'm running application using in memory Session replication.
The problem which i have is that under the stress test (about 10-20 users) sometimes user suddenly is presented with Login Screen (more rare with session expired message) ! This also can happens immediately after user login .
That happens randomly on different part of the System. In more of the cases user is thrown independently from other users but
sometimes all the users are thrown simultaniously.
When the System is tested with only one user this effect appears very rare.
What i have done is to enable Cluster and Replication debugging to see if there some errors within Http Session Replication. However there isn't any errors appeared. From the application part everything seems fine.
I suspect that the proxy could cause a problem (by forwarding the request to secondary instead of primary server). Currenltly i'm using HttpClusterSerlvet installed by default from WebLogic Configurator on dedicated Managed Server.
Can somebody give any advice with this ?
Thanks in advance,
Krasimir

Krashmir,
Did you find any solution for this problem. I am also facing the similar issue.
Thanks,
Ram

SQL connection errors when stress testing mobile service: SQL failure after 3 attempts

I have created a Mobile Service (node.js), which has been running for a few months with 50-100k api calls per day with no issues.
The usage of the service will be scaled up soon, and it will receive much higher traffic, so I am running stress tests (on a staging deployment of the same service).
The api in question queries data from the sql database that is attached to the mobile service, but caches the resulting data in a redis database for 5 minutes, so each call with identical parameters will not access the SQL database, just the redis cache.
My first test never has any problems:
Run a single api calls as fast as possible using the program wrk (https://github.com/wg/wrk). This test never has a problem, and I have run it an hour continuously with a sustained rate of 200 req/s and very few timeout errors.
The second test always causes problems:
I created a list of 5 different api calls to the same service (same endpoint, but different parameters), and I run those randomly interweaved as fast as possible. I use the program locust (http://locust.io) for this, spawing 10.000 clients at a rate of 500
per second. For the first few seconds everything goes ok, but then connections start failing massively.
I get mostly:
Error: SQL failure after 3 attempts. Error: [Microsoft][SQL Server Native Client 10.0]TCP Provider: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected
host has failed to respond.
(SqlState: 08001, Code: 10060)
And I see this in the http response:
ConnectionError(ProtocolError('Connection aborted.', gaierror(8, 'nodename nor servname provided, or not known')),)
The strange thing is that since I am running the same five calls repeatedly, only the very first of each call will actually access the sql database, every subsequent call will just return data directly from redis, and not try to access the sql database at
all.
In the azure console for the sql database in question, I see 1860 successful connections and 11 failed connections, which does not explain the massive failure rate I am seeing.

Thanks for sharing your tips on this forum, as it will be useful for other users, that run into this issue.
Feedback like this will also help us improve error reporting in the next release, as missing class files in the packaged application is a common issue when developers are moving from the embeded oc4j instance packaged with JDewveloper to standalone instances.
-Eric

Stress test report example

Hi guys,
Anyone has examples about performance and stress tests reports that could provide?
Im starting our stress test and I will write a report, but Im not sure how to do it and I would like to see an example before start.
If you dont mind, send me to [email protected]
Thanks in advance,
Ricardo.

Sorry guys, but I mean a document and not SAP transactions

How do I remove a Safari debug stress test "Uptime" window?

I used the Start Sampling option in the Safari Debug drop down menu in a attempt to solve a slowdown problem. A window then appeared on the desktop showing Uptime, Pages, and Resources which persists although I have stopped sampling, quit Debug, quit Safari, and restarted--and moving it to Trash won't work. (My slowdown problem has been solved.) How do I remove this "Uptime-etc." see-through window from my desktop? Nothing on the Debug drop down menu is checked and Sampling and Stress Test lines read Start---, not Stop---. Thanks for any help.

Under the BookMarks menu is "Show All Bookmarks". Open that, and then navigate to the "Popular" folder, then highlight the offensive bookmark, and hit the delete button. That's it.

Stress Test Software

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