performance-testing

问题 I'm trying to execute simple REST API load test with Visual Studio Cloud Test: https://www.visualstudio.com/en-us/docs/test/performance-testing/getting-started/getting-started-with-performance-testing The request contains authorization token and I use pre-generated .csv data source to supply them. Here is the description: https://msdn.microsoft.com/library/ms243142.aspx When run the test from local machine everything works just fine, but when I start the test from cloud 97% of tests are

问题 I want to measure performance of my business class in a web service. How can I do it through coding? I want to know how much CPU my business class consumes to perform its operation and how does performance vary if web service gets multiple simultaneous service calls. I do not want to measure performance of my web service; I just want to know how my business class is performing. My thought: After reading some blogs, I decide to write some piece of code that will create a PerformanceCounter as

问题 Scala's REPL is a wonderful playground to interactively test certain pieces of code. Recently, I've been doing some performance comparisons using the REPL to repeatedly execute an operations and comparatively measure wall clock times. Here's such an example I recently created to help answering an SO question [1][2]: // Figure out the perfomance difference between direct method invocation and reflection-based method.invoke def invoke1[T,U](obj:Any, method:Method)(param:T):U = method.invoke(obj

问题 I have some machine learning results that I don't quite understand. I am using python sciki-learn, with 2+ million data of about 14 features. The classification of 'ab' looks pretty bad on the precision-recall curve, but the ROC for Ab looks just as good as most other groups' classification. What can explain that? 回答1: Class imbalance. Unlike the ROC curve, PR curves are very sensitive to imbalance. If you optimize your classifier for good AUC on an unbalanced data you are likely to obtain

问题 I have a Windows Service that reads from multiple MessageQueue instances. Those messagequeues all run their own Task for reading messages. Normally, after reading a message, the work of an I/O database is done. I've found articles claiming it's a good idea to use async on I/O operations, because it would free up threads. I'm trying to simulate the performance boost of using async I/O opertations in a Console application. The Console application In my test environment, I have 10 queues.

问题 I am doing performance testing for an application that has AJAX calls. I am able to record the same requests but unable to execute them. Can anyone help me in execute the AJAX requests, please? Do I need to use any extra plugin for this? If yes, what are they and how to I use them. 回答1: I'm not aware of any existing plugins which are capable of handling AJAX calls. Technically AJAX requests are basic HTTP Requests but they need to be executed in parallel using one extra thread per call. For

问题 For some testing I'm doing I need a C# function that takes around 10 seconds to execute. It will be called from an ASPX page, but I need the function to eat up CPU time on the server, not rendering time. A slow query into the Northwinds database would work, or some very slow calculations. Any ideas? 回答1: Try to calculate nth prime number to simulate CPU intensive work - public void Slow() { long nthPrime = FindPrimeNumber(1000); //set higher value for more time } public long FindPrimeNumber

问题 I have created a GitHub repo that currently has two branches, master, and clean_state (The default Angular 2 SpaTemplate). I am looking to remove the server-side rendering while still keeping the application working in a similar way. I am working with Visual Studio 2017 Enterprise edition and this project is an Asp.Net Core 1.1 project. I have never worked with this technology and only understand the basics of stripping this module from the project. My question is what totally needs to be

问题 I have the following java code to run JMeter. import org.apache.jmeter.control.LoopController; import org.apache.jmeter.engine.StandardJMeterEngine; import org.apache.jmeter.protocol.http.sampler.HTTPSampler; import org.apache.jmeter.testelement.TestElement; import org.apache.jmeter.testelement.TestPlan; import org.apache.jmeter.threads.SetupThreadGroup; import org.apache.jmeter.util.JMeterUtils; import org.apache.jorphan.collections.HashTree; public class HCTGameDay { public static void main

问题 What should be the JSON Path Expression to get the beneficiary_ids of beneficiaryType = OtherBankCustomer. My Json response is as follows: { "busBeneficiaryBeanList": [{ "beneficiary_serial_no": 0, "beneficiary_id": "2090", "senderMobileNo": null, "beneficiaryName": "Shibashish Dash", "beneficiaryNickName": "Shib", "beneficiaryType": "WalletCustomer", "beneficiaryMobileNo": "9778697852", "status": "Active", "time": null, "accountno": "8093630503", "ifsccode": null, "bankType": null, "bankName