Jmeter Counter

JMeter’s While controller is best suited for advanced scripts which simulate realistic user behaviors. This gives a primitive way of generating test data. Apache Jmeter入門. With Jmeter counter:-The screenshot shows parameters used in HTTP Request. Review of Jmeter Components (Part- II): => This is part of JMeter training series. Mouse hover "Config Element". Jmeter使用CSV Data Set Config参数化数据不重复的多次循环执行(实现多用户. While reading JMeter docs, I am curious whether others has been succesfully doing this and can share it. One of the most common methods to measure latency is the utility ping. BlazeMeter's Continuous Testing platform is 100% Open Source Compatible & Enterprise Ready. So that was the long version of: jmeter can handle as many threads as the JVM can on that particular machine, which is quite a lot. Jmeter training at Analytiq Learning is designed to cover all the fundamental aspects of Performance testing along with the detailed features of Jmeter with real time scenarios and examples. If server response is an error, JMeter will stop the test. Because DayTrader supports web-based traffic, this example uses the HTTP Request. ppt), PDF File (. A JMeter Test Plan comprises of test elements discussed below. If you want to create 30 threads within 30 seconds you have to set. If you want to control when to send a user request to a web server under test, what would you do?JMeter gives us a feature to do that. JMeter also allows one to enable additional protocols, by changing the property https. These 2 options override Start Time and End Time. JMETER AGENDAWhat is JMeter ?Why JMeter?Who developed?Where ? can we get JMeterHow To Use? What is JMeter? Jmeter is a open source software performance testingtool. JMeter generates the load on the server and also comes with an agent that can be run on the server machine for the collection of server performance metrics. User Defined Variables 에는 직접 변수를 지정하여 등록할 수 있다. Resources from the authors, creators, innovators, & leaders of technology - home to leading publishers Addison-Wesley Professional, Prentice Hall Professional, & Sams. org to make sense of the data and I was happy. How to use Jmeter JMS publisher & subscriber with ActiveMQ This post describes basic steps to how to use Jmeter JMS publisher and subscriber with ActiveMQ. Assume that you have a user defined variable called "counter" with the value of "1". Controllers can be used to modify the number of repetitions of a sampler. A window for the performance counter settings will appear. Yes, if fireIterationStart() is called directly. When I am going to apply this counter then gett. But as you could see, we hardcoded the username and password field in HTTP Request sampler. Igor Kromin | Consultant. A sample JMeter Test Plan demonstrates wiring the Load Generator and Kafka Sampler together for a complete test. How to Handle Correlation in JMeter December 7, 2015 2018-07-17T11:13:08+0000 DevOps If I were to test how a webserver would handle a static site I could simply follow the instructions from my previous post on JMeter Performance Testing , record a simple script, run it with multiple threads and that script would work just fine. Means each new thread will get it's new count if it is checked. JMeter can recognize the maximum count of simultaneous users that can be handled by a website. Here I am using time and counter function of JMeter to create the file. Installation. For this project we will use the features to collect CPU measurements and to optionally upload test results to a cloud-based performance test analysis tool. Let's take practical example. Apart from the automatically extracted cookies by the HTTP Cookie Manager component, JMeter provides a way to add user-defined cookie values to a test plan. Counter-Strike: Global Offensive is a tactical first person shooter. disable the “View Result Tree” Use CSV output rather than XML. rdataì‰0 Š @@. In latest JMeter 3. Server Side Metrics: PerfMon Metrics Collector. Understood. Let's seen an example of Constant Timer in use. I got the graph in jmeter GUI correctly without any errors. Apache JMeter, which is a very popular tool to perform load tests for web applications, does not come with native support to handle HTTP responses with JSON bodies. JMS API defines 5 message body formats which is known as JMS message types and out of that Jmeter supports few message types. In MyCitibanker, client logins into the Application form an internet browser, the. This is a method of generalizing an action for many users. JSR223 Pre/Post processors¶ These are like JSR223 actions but executed right before or after the enclosing HTTP action. A Counter is used as the kafka_key to ensure the load is distributed across all available Kafka partitions. I ran the Apache JMeter of neo4j. println("Current counter value = " + counter); System. ppt), PDF File (. To apply a timer to a single sampler, we need to. Using BeanShell sampler element we can load a CSV file once and later on use its data in multiple thread groups. in property. Assume that you have a user defined variable called "counter" with the value of "1". I tried out https://loadosophia. A constant Timer will introduce a fixed delay between consecutive requests of the same thread. Mouse hover "Config Element". End to end scenarios with different load testing and analysing techniques are covered. I got the following results: Average: 54 Min: 20. With BlazeMeter, Dev and QA teams can run high-scalable continuous testing for website, mobile, api and software. All of the standard commands we discuss in this manual live in the BeanShell JAR file under the path /bsh/commands. Specified variables will be created with incremental suffix (email_1, email_2, email_3…. BI4 Web Intelligence Performance Test with JMeter Overview of the Business Case Designing and deploying a BI environment can be challenging in and of itself, but it is most likely to fail when released to business users without validation of performance and reliability. How to use Jmeter JMS publisher & subscriber with ActiveMQ This post describes basic steps to how to use Jmeter JMS publisher and subscriber with ActiveMQ. I tried this loop 20 times by updating Loop Count and Maximum values to 20. Counter Counter can be used anywhere in the Thread Group. This element is called the “CSV Data Set Config”. JMeter Training Course. But in real situations not every 100,000 users logs in at the same point of time, this is where ram. jagadeesh September 22, 2015 at 5:20 PM - Reply. It contains variables used in the build file to specify the number of threads JMeter should use to run the test, the rampup time for the test, the number of times the test should run, whether we are using remote machines or not, the name of the PerfMon counter set and the UserName/Password for the local admin on the machine with the counter set. The counter can be configured to keep each simulated user's values separate, or to use the same counter for all users. JMeter’s While controller is best suited for advanced scripts which simulate realistic user behaviors. For example: #sample_variables=SESSION_ID,REFERENCE # N. You can then change the stepup load pattern to match you want, such as extending the run duration and the maximum number of threads. # Versions of JMeter after 2. sh - very basic JMeter script with no JVM options specified. This is the guest post from Anmol Rastogi, he is currently working as QA Manager in the Cognizant Technologies, Pune. My environment: apache-jmeter-2. Using BeanShell sampler element we can load a CSV file once and later on use its data in multiple thread groups. In MyCitibanker, client logins into the Application form an internet browser, the. In order to run in in distributed mode, one of your servers has to be the controller. It requires a special Server Agent process to be started at target computer and plots collected data on a nice graph (Figure 1). SSO with SAML login scenario in JMeter SAML(Security Assertion Markup Language) is increasingly being used to perform single sign-on(SSO) operations. blg) to a comma-separated values (. This entry was posted in. Obviously, some things that can be done with Jmeter cannot be done with k6, and vice versa. If you wish to add more than one timer to a Thread Group, JMeter takes the sum of all the timers and pauses for that amount of time before executing the samplers to which the timers apply. This is the guest post from Anmol Rastogi, he is currently working as QA Manager in the Cognizant Technologies, Pune. This value will be initialized and incremented within our Counter(step 2). A Counter is used as the kafka_key to ensure the load is distributed across all available Kafka partitions. This is open source and has no commercial ties to any company I have worked for. Apache JMeter file (Required) The Apache JMeter test filename to be used under the load test folder specified above. We use the loop sampler for filters, chats, and so on. I am trying to get JMX monitors graph in Perfmon Metrics collector listener but getting all server metrics like CPU, Memory , network I/O except JMX. ‘sha1’ or ‘sha256’. The agent uses the SIGAR open source library. A Thread Group defines a pool of users that will execute a particular test case against your server. We will now have JMeter variables that can be used further in subsequent requests. With BlazeMeter, Dev and QA teams can run high-scalable continuous testing for website, mobile, api and software. println("Current counter value = " + counter); System. Achieve a much more. JMeter will automatically find JMeter components in any jars found here. Hence, split() and regex() and the variable evaluation functions will not work. Create a new variable: var1 with value www. Jmeter - Counter Config Element With Example Right click on Simple Controller. Because I don't know if this bug report will ever be integrated in JMeter or when. GitHub Gist: instantly share code, notes, and snippets. Please refer to the JMeter site for detailed instructions on using this software. 4) Select thread group. The counter can be set up so that it increments independently for each user i. rsrc°è ê À @@. • Developed Automation Test Plan. This is what happens! Timers allow JMeter to delay between each request which a thread makes. counter = 1. I tried out https://loadosophia. Running JMeter Tests in Unix. JMeter functions are special values that can populate fields of any Sampler or another element in a test tree. Allows the user to create a counter that can be referenced anywhere in the Thread Group. JMeter proxy Step-by-step This is one of the easy way to create a test plan is to use the Proxy. Mouse hover "Add". All types of thread groups have a common option which is the ‘Action to be taken after a Sampler error’ which is. Control Panel. 0 version apache software included Generate Jmeter Report Dashboard using APDEX(Application Performance Index). The counter uses an integer variable to hold the count, which therefore has a maximum of 2,147,483,647. Counter-Strike: Global Offensive is a tactical first person shooter. Our Request will be sent in JSON format, So Now we have selected Body Data option here. It is the most popular component of the JMeter-plugins set. So once Jmeter will execute it will take the first keyword. You can then change the stepup load pattern to match you want, such as extending the run duration and the maximum number of threads. If the performance counter shows high context switches, it means that threads have less time to do their work and the system performance might go down. Please note the following special behaviors regarding the condition: It can be any variable or function that eventually evaluates to the string "false". This gives a primitive way of generating test data. The string name is the desired name of the hash digest algorithm for HMAC, e. Unlike their automatically extracted counter parts, once defined, all threads executing in the test plan will share these values. The workaround determines the instance name by looping on prefix and matching Pid. JMeter uses the term Sampler for the component that interacts with the system under test. net 201 2018 2019 2019 certifications 401 5 common myths about data science a brief history of artificial intelligence absolute xpath acquire action class slideshare actions class example in selenium webdriver actions class in selenium webdriver actions class in selenium webdriver java activities in. In this post, we just focus to the Constant Timer because it's the simplest one in my opinion. Mouse hover "Add". jar to the JMETER_HOME/lib/ directory and start the Jmeter. Nth Argument – The Nth integer value/Jmeter Variable Last Argument – A variable or a reference name which will store the value for the addition and can be reused later. port') in jmeter. It uses HMAC as pseudorandom function. Logic Controllers: Logic Controllers let you customize the logic that JMeter uses to decide when to send requests. Highlight to monitor all disks on the server in the same report. put method and we will use this jmetervariable in Wikisearch http request. Jmeter TestPlan -- 20-30k req/sec. Allows the user to create a counter that can be referenced anywhere in the Thread Group. These 20 solved Performance Testing questions will help you prepare for technical interviews and online selection tests conducted during campus placement for freshers and job interviews for professionals. This is a method of generalizing an action for many users. Counter Counter can be used anywhere in the Thread Group. Server Side Metrics: PerfMon Metrics Collector. JMeter tips and tricks scratchpad. Check the box labeled Regex matching. The counter function instances are now completely independent. The counter can be configured to keep each simulated user's values separate, or to use the same counter for all user. The last test run we ran was on a small network of 2 dual CPU opteron linux boxes (64 bit) running SuSe and with Java 5 from Sun. The latest jMeter updates and plugins came with a few brand new thread groups. This is open source and has no commercial ties to any company I have worked for. Category Science & Technology. > Configuration Elements in JMeter are used to configure or modify the sampler requests made to the server. Downloads counter jar on MainKeys. BI4 Web Intelligence Performance Test with JMeter Overview of the Business Case Designing and deploying a BI environment can be challenging in and of itself, but it is most likely to fail when released to business users without validation of performance and reliability. A constant Timer will introduce a fixed delay between consecutive requests of the same thread. println("JmeterTimerVariable value = " + timer); 4 Store beanshell script variable into Jmeter variable by using vars. pbkdf2_hmac (name, password, salt, rounds, dklen=None) ¶ The function provides PKCS#5 password-based key derivation function 2. Developed a Framework using Jmeter. To use these variables in the 'Login request', we need to add a counter that will be used to access the right values from the JDBC query response. cmd, jmeter-t. This counter shows a number for every request that we send. What's in the video course? Getting Started with JMeter - How to install JMeter and create your first script. Allows the user to create a counter that can be referenced anywhere in the Thread Group. How to use a CSV file with JMeter. In this blog, I would like to share how to do the performance and load testing of a web application using JMeter Recording Tests (GUI mode) on Windows Operating System. Ramp-Up should be sufficient enough to avoid unnecessary and large work load from the beginning of the test execution. Heap memory: JMeter may require more Heap memory than the allocated. In the nested http sampler within the loop the value will be increment with the __intSum function by setting the name of the http request which looks like: ${forum_link} - ${__intSum(${LoopCounter},1,LoopCounter)} That works so far as I can see the request sample name. Create loop counter and add all transection inside loop counter which you want to do for multiple times 3. 5:43 AM bsh. This value will be initialized and incremented within our Counter(step 2). Select "Test Plan" node. Apache JMeter file (Required) The Apache JMeter test filename to be used under the load test folder specified above. Remote servers by default listens to port 1099. Click "Counter". How to use the character count tool to calculate string length Our character counter is a great tool for quickly retrieving the length of your string of text or numbers. Agent Count (Required) Number of test agents (dual-core) used in the run. A sample JMeter Test Plan demonstrates wiring the Load Generator and Kafka Sampler together for a complete test. Parameterization Using User Variables Now we will learn how to parameterize the values using User Variables. no wrappers are added. Checkbox to indicate whether the response should be forced successful before testing. The logic behind using the counter in Jmeter is same as in any other programming language/logic. In the Thread Group GUI, you can control the number of users simulated (num of threads), the ramp up time (how long it takes to start all the threads), the number of times to perform the test,…. Let's check out each of them in detail. HTTP Request. Nagios Exchange - The official site for hundreds of community-contributed Nagios plugins, addons, extensions, enhancements, and more! jmeter invocation plugin - Nagios Exchange Network:. cmd, jmeter-t. Ramp-Up should be sufficient enough to avoid unnecessary and large work load from the beginning of the test execution. rsrc°è ê À @@. jmx byselecting File->Open and entering the test plan path. Allows the user to create a counter that can be referenced anywhere in the Thread Group. Ahsan Javed. Robot framework tutorial, Selenium, Python, Jmeter, Automation notes Tuesday, March 31, 2015. This entry was posted in. JSON is becoming more and more important as a data exchange format, especially in Ajax web frameworks and RESTful web services. cmd and jmeter-n-r. There are times when we need to parse a response and extract certain information from it. Disk Transfers/sec Counter Indicates whether the physical disk is a potential bottleneck 4. MP3 Dancer 1. JMeter - Config Element - "Counter" 1. 1 and earlier versions used a fixed thread variable to keep track of the per user count, so multiple counter functions operated on the same value. Select Add -> Config Element -> Counter. This entry was posted in. Jmeter is one of the most popular tools for software performance testing, In this course you will learn the concepts of designing and creating test plans for real-world web applications using Apache JMeter, including functional, regression and stress testing plans for JDBC database connections, FTP, LDAP, Web services and HTTP. jmx byselecting File->Open and entering the test plan path. Igor Kromin | Consultant. This counter includes paging traffic on behalf of the system Cache to access file data for applications. Distributed Testing in JMeter: Distributed testing is a kind of testing which use multiple systems to perform stress testing. August 2017: Assigned to assist with the installation and operational use of primary and secondary Counter UAS systems for the defense of critical nuclear and national security assets at Los. This value also includes the pages to/from non-cached mapped memory files. Jmeter - Counter Config Element With Example Right click on Simple Controller. The relog. Now i want to run my same jmeter script via Maven and jenkins for continuous Integration (Without opening jmeter GUI). Select Add -> Config Element -> Counter. How to use Jmeter JMS publisher & subscriber with ActiveMQ This post describes basic steps to how to use Jmeter JMS publisher and subscriber with ActiveMQ. -As it is implemented thread wise, add this under the test plan (not thread group) -Use this for a big load generation over a limited resourced. So after several days, I had a couple of jmeter test results not very helpful and organized. PerfMon-JMeter Server Monitoring PlugIn In this article we are going to see what are additional features/items added after installing jmeter plugin (Google Plugin) and what we can do with it. The counter uses an integer variable to hold the count, which therefore has a maximum of 2,147,483,647. no wrappers are added. 1 and earlier versions used a fixed thread variable to keep track of the per user count, so multiple counter functions operated on the same value. Changing JMeter Variables. Jmeter Test Plans | jMeter Test Plan Elements - Test Plan comprises of at least one Thread Group. This counter we are going to use for dynamic variable creation. If server response is an error, JMeter will stop the test. You can then change the stepup load pattern to match you want, such as extending the run duration and the maximum number of threads. The counter generates a new number each time it is called, starting with 1 and incrementing by +1 each time. Installation and Configuration. The process to define either type of counter is almost identical. The bug report contains an enhancement of the current JDBC Sampler to allow JMeter to invoke PreparedStatements and also to change the way Callable Statements are handled to avoid performance problems when using some JDBC. bat file in any editor and change values of “set HEAP=-Xms512m -Xmx512m” parameter. The string name is the desired name of the hash digest algorithm for HMAC, e. The CSV Data Set Config is used to read lines from a file and to split them into vari. Add BeanShell postprocessor at http sampler which we are going to loop > Call counter inside beanShell PostProcessor. I am trying to get JMX monitors graph in Perfmon Metrics collector listener but getting all server metrics like CPU, Memory , network I/O except JMX. I have started a load test of simple static hello world page with Jmeter for a consurrent connection of 1000. We can use the getIteration() function to get the thread loop count in properties and also in shell. At least one kernel thread exists within each process. 3) Add a Http Request and a Listener(View Results Tree) and use the Jmeter variable we have declared in the counter i. Kernel threads are preemptively multitasked if the operating system's process scheduler is preemptive. This value also includes the pages to/from non-cached mapped memory files. 0, it's far easier to extract data from JSON responses using the JSON variable extractor. jmeter-server communicates with multiple remote injector Java RMIRegistry services. I will discuses about Listeners only. Server Side Metrics: PerfMon Metrics Collector. jmeter-server - start JMeter in server mode. JMeter has variables which can be assigned by Counter. JMeter cannot retrieve by default server metrics except Tomcat ones. How to Use Apache JMeter for Web Services Testing Recently, we were able to do some clustering related load testing on Apache Axis2 web services engine focusing on state replication property. Re: How do I substitute jmeter variable in "Summary Report" (Listener) Filename. Android Device We used both a high-end and a low-end device for testing to because performance can vary and we wanted to prove the importance of variability in device configurations on the same platform. JDBC Connection Configuration. JMeter has more test features: variable parametrization, assertions (response validation), per thread cookies, configuration variables and a variety of reports. in property. JMeter Property: it works the same way as a Function or Variable, but assumes the value of a JMeter property instead. jmx -l test. The counter can be configured to keep each simulated user's values separate, or to use the same counter for all user. JMeter can recognize the maximum count of simultaneous users that can be handled by a website. JSON is becoming more and more important as a data exchange format, especially in Ajax web frameworks and RESTful web services. In this blog, I would like to share how to do the performance and load testing of a web application using JMeter Recording Tests (GUI mode) on Windows Operating System. -As it is implemented thread wise, add this under the test plan (not thread group) -Use this for a big load generation over a limited resourced. This article is about how to use JMeter for Performance Testing of a RESTful API. Only save the data that you need. Means each new thread will get it's new count if it is checked. You can use JMeter properties to do that. In addition to logs, The Debug Sampler can be used: The Debug Sampler generates a sample containing the values of all JMeter variables and/or properties. Android Device We used both a high-end and a low-end device for testing to because performance can vary and we wanted to prove the importance of variability in device configurations on the same platform. Jmeter TestPlan -- 20-30k req/sec. J Meter is the performance testing tool used for checking the load of the application. Now i want to run my same jmeter script via Maven and jenkins for continuous Integration (Without opening jmeter GUI). 1 day ago · Apply to Urgent Opening for Counter sales At Jodhpur Airport (23832803) Jobs in Jodhpur at Klar HR Services Pvt Ltd. Easiest way to achieve this is use "bsh. A Thread Group defines a pool of users that will execute a particular test case against your server. Using a regular expression to extract out multiple related data is sometimes painful. Click on the interactVizStepupThreadGroup. Robotframework Jmeter testcase example with assertion *** Settings ***. Loop Controller. Jmeter使用CSV Data Set Config参数化数据不重复的多次循环执行(实现多用户. No events are being recorded in Load runner scripting Here are the most common reasons why no events are showing in the script: The events counter keeps increasing, while the generated script is empty. For example, if Thread Count is 10 and the ramp-up period is 100 seconds, then Jmeter will take 100 seconds to get all 10 Threads up and running. Change the Grouping option to Add separators between groups. What is the assertion in the Jmeter? Ans: It allow you to include some validation test on the response of your request made using a Sampler. In bean shell scripting we are reading the JMeter variables value and storing script variable value into JMeter variable or creating Jmeter variable. PerfMon-JMeter Server Monitoring PlugIn In this article we are going to see what are additional features/items added after installing jmeter plugin (Google Plugin) and what we can do with it. What is the most suitable performance counter to detect Memory Leak Answer / [email protected] To give you an idea of the kinds of performance you can expect from ActiveMQ we have a bunch of JMeter Performance Tests that you can run on your hardware with the protocols of your choice. 阅读数 15765 2017-01-14 lluozh2015. 1 day ago · Apply to Urgent Opening for Counter sales At Jodhpur Airport (23832803) Jobs in Jodhpur at Klar HR Services Pvt Ltd. Answer: It's a great idea to write some glue between JMeter and JUnit for just this purpose. Check the box labeled Regex matching. put method and we will use this jmetervariable in Wikisearch http request. Parameterization Using User Variables Now we will learn how to parameterize the values using User Variables. Disk Transfers/sec Counter Indicates whether the physical disk is a potential bottleneck 4. Specified variables will be created with incremental suffix (email_1, email_2, email_3…. Change the Grouping option to Add separators between groups. This article is about how to use JMeter for Performance Testing of a RESTful API. I am trying to get JMX monitors graph in Perfmon Metrics collector listener but getting all server metrics like CPU, Memory , network I/O except JMX. With Jmeter counter:-The screenshot shows parameters used in HTTP Request. We are testing a sharepoint 2010 (Intranet) appln using JMeter. JMeter and Load Testing Best Practices As the saying goes, there are no best practices or probably in context. relocCð Dª @BÇ Ä2BéèÇV‹ñÇ. JMeter Property: it works the same way as a Function or Variable, but assumes the value of a JMeter property instead. jmeter - run JMeter in GUI (JVM options specified) jmeter. Easiest way to achieve this is use "bsh. CSV Data Set Config usually works well when it is necessary to read data from CSV files for load tests on JMeter. The counter config lets the user configure a starting point, a maximum, and the increment. jmeter Counter_哈哈_新浪博客,哈哈, 如果要得到这个Counter的值,可以这样使用:${counter}:这里的counter是引用名称. Can any one suggest How to increment a variablein jmeter. After the startup, a message was displayed that you can create tests in the Apache JMeter graphical mode, and you can execute them only from the terminal, for example: jmeter -n -t [jmx file] -l [results file] -e -o [Path to web report folder] By the way, Apache JMeter in Windows is run through the jmeter. 3) Add a Http Request and a Listener(View Results Tree) and use the Jmeter variable we have declared in the counter i. Windows Server Tuning for. How to start , stop perfmon from the command line in Windows ? Logman command is the solution for it. JMeter Course Curriculum JMeter Training course videos will help you learn latest JMeter 5 concepts like script building, thread groups, controllers, processors, timers, listeners, bean shell scripting, config elements, load generation and analysys. Select "Test Plan" node. A Counter is used as the kafka_key to ensure the load is distributed across all available Kafka partitions. The JMeter GUI (ApacheJmeter. Getting the proper delay was easy once I determined how to access the number of threads, ramp duration and thread loop counter. He is having total 11 years of experience in the IT industries. visitors can easily understand the concepts of different technical related subjects like software Testing concepts , practice questions on sql And JMeter(Open source automation tool ) for Performance testing of an web application and about selenium tool used for functional testing of. As you can see in the following experiment, when the variable is directly used in the script and cached, the value is not getting updated each iteration. Allows the user to create a counter that can be referenced anywhere in the Thread Group. #cloud training #edureka #edurekapowerbi. BeanShell Commands are scripted methods or compiled Java classes which are dynamically loaded from the classpath to implement a method. The workaround determines the instance name by looping on prefix and matching Pid. ${Variable Name} can be used to create parameter inside a sampler, by replace a string with parameter name. But if you increase loop count I think that you don't create new threads but repeat jmeter elements procedure in the Thread Group therefore the time beetween the request isn't 30 seconds but just over 10s. 阅读数 15765 2017-01-14 lluozh2015. 사용법을 잘 아는것은 아니지만, 그래도 가끔 HTTP 테스트용으로 유용하기에 사용법을 간단하게 정리해둡니다. A small packet of data, typically 32 bytes, is sent to a host and the RTT (round-trip time, time it takes for the packet to leave the source host, travel to the destination host and return back to the source host) is measured. A constant Timer will introduce a fixed delay between consecutive requests of the same thread. Apache JMeter is an open source performance tool which is helpful in testing load test for WebApplications and WebServices,REST API services.