Struggling with a task for the past 2 days that involves running a JUnit test on JMeter. Here's the code snippet:

public class LoadTest5 extends TestCase {
private WebDriver driver;

public LoadTest5(){}

public LoadTest5(String testName){
    super(testName);
}

@BeforeClass
public void setUp() throws Exception {
    super.setUp();
    driver = new FirefoxDriver();
    driver.get("link"); //link hidden for privacy
}


@Test
public void testTestLoad() throws InterruptedException {
    // Test steps here
}

@AfterClass
public void tearDown() throws Exception {
    super.tearDown();
    driver.quit();
}

}

Planning to run this test in 5 threads in JMeter and need to record execution times for each step, such as the login step:

// Login Step
driver.findElement(By.id("loginForm:authLogin")).sendKeys("LoadTest5");
driver.findElement(By.id("loginForm:authPassword")).sendKeys("Abc123");
driver.manage().timeouts().implicitlyWait(60, TimeUnit.MILLISECONDS);
driver.findElement(By.id("loginForm:btnLogin")).click;

How can I track and write execution times for each step to separate .csv files when dealing with multiple tests? Any suggestions on accomplishing this in JMeter and generating graphical results?