How to Manage geckodriver Processes and Prevent Memory Leaks in Selenium Without Using `driver.quit()`?

Selenium : How to Stop geckodriver Process Impacting PC Memory, Without Calling driver.quit()?

When using Selenium for automated testing, it is important to invoke the quit() method to terminate the WebDriver instance and close the browser session. However, if you want to analyze the test results or fix any issues before closing the browser, you may want to avoid the quit() call.

Best Practice

According to best practices, it is advisable to call quit() within the tearDown() or After method to ensure proper cleanup and prevent potential memory leaks. Invoking quit() sends the "quit" command with additional flags to the WebDriver instance, resulting in a graceful termination of the browser session.

Consequences of Not Calling quit()

If you do not call quit(), each subsequent test run will leave behind a geckodriver.exe process that accumulates in memory, potentially causing performance issues. This memory accumulation persists regardless of whether you manually close the browser.

Alternative Solution

Although calling quit() is recommended, you can alternatively use external solutions to kill the dangling geckodriver instances if needed. Here are three code blocks that you can employ:

1. Java Solution (Windows):

import java.io.IOException;

public class Kill_ChromeDriver_GeckoDriver_IEDriverserver {

    public static void main(String[] args) throws Exception {
        Runtime.getRuntime().exec("taskkill /F /IM geckodriver.exe /T");
        Runtime.getRuntime().exec("taskkill /F /IM chromedriver.exe /T");
        Runtime.getRuntime().exec("taskkill /F /IM IEDriverServer.exe /T");
    }

}

2. Python Solution (Windows):

import os
os.system("taskkill /f /im geckodriver.exe /T")
os.system("taskkill /f /im chromedriver.exe /T")
os.system("taskkill /f /im IEDriverServer.exe /T")

3. Python Solution (Cross Platform):

import os
import psutil

PROCNAME = "geckodriver" # or chromedriver or IEDriverServer
for proc in psutil.process_iter():
    # check whether the process name matches
    if proc.name() == PROCNAME:
        proc.kill()

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