release Selenium chromedriver exe from memory

Question

I set up a python code to run Selenium chromedriver exe  At the end of the run I have browser close   to close the instance   browser   webdriver Chrome    I believe it should release chromedriver exe from memory  I m on Windows 7   However after each run there is one chromedriver exe instance remain in the memory  I hope there is a way I can write something in python to kill the chromedriver exe process  Obviously browser close   doesn t do the work  Thanks

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I have this issue  I suspect its due to the version of Serenity BDD and Selenium  The chromedriver process never releases until the entire test suite finishes  There are only 97 tests  but having 97 processes eat up the memory of a server that hasn t much resources may be having an affect on the performance   To address I did 2 things  this is specific to windows     before each test  annotated with  Before  get the process id  PID  of the chromedriver process with   List lt Integer gt  pids   new ArrayList lt Integer gt     String out  Process p   Runtime getRuntime   exec  tasklist  FI   IMAGENAME eq chromedriver exe       BufferedReader input   new BufferedReader new InputStreamReader p getInputStream      while   out   input readLine       null        String   items   StringUtils split out            if  items length  gt  1  amp  amp  StringUtils isNumeric items 1              pids add NumberUtils toInt items 1              after each test  annotated with  After  kill the PID with   Runtime getRuntime   exec  taskkill  F  PID     pid

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It s kinda strange but it works for me  I had the similar issue  after some digging I found that there was still a UI action going on in the browser  URL loading or so   when I hit WebDriver Quit     The solution for me  altough very nasty  was to add a Sleep   of 3 seconds before calling Quit

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This answer is how to properly dispose of the driver in C   If you want to use a  proper  mechanism that should be used to  tidy up  after running ChromeDriver you should use IWebDriver Dispose         Performs application-defined tasks associated with freeing  releasing  or resetting unmanaged resources     Inherited from IDisposable     I usually implement IDisposable on class that is dealing with IWebDriver   public class WebDriverController   IDisposable       public IWebDriver Driver       public void Dispose                 this Driver Dispose              and use it like   using  var controller   new WebDriverController          code goes here     Hope this saves you some time

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Make Sure You get the Driver instance as Singleton then Apply at end  driver close   driver quit     Note  Now if we see task manager you will not find any driver or chrome process still hanging

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I simply use in every test a method tearDown   as following and I have no problem at all    AfterTest public void tearDown         driver quit        driver   null      After quitting the driver instance clear it from the cache by driver   null  Hope the answer the question

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Python code  try        do my automated tasks except      pass finally      driver close       driver quit

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I had success when using driver close   before driver quit    I was previously only using driver quit

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I have looked at all the responses and tested them all  I pretty much compiled them all into one as a  Safety closure   This in c   NOTE you can change the param from IModule app to that of the actual driver    public class WebDriverCleaner        public static void CloseWebDriver IModule app                try                       if  app  GetDriver      null                                app GetDriver   Close                    Thread Sleep 3000      Gives time for everything to close before quiting                 app GetDriver   Quit                    app GetDriver   Dispose                    KillProcessAndChildren  chromedriver exe       One more to make sure we get rid of them chromedrivers                                  catch  Exception e                        Console WriteLine e               throw                       public static void KillProcessAndChildren string p name                ManagementObjectSearcher searcher   new ManagementObjectSearcher               Select   From Win32 Process Where Name        p name                  ManagementObjectCollection moc   searcher Get            foreach  ManagementObject mo in moc                        try                               KillProcessAndChildren Convert ToInt32 mo  ProcessID                                catch  ArgumentException                                break                                       public static void KillProcessAndChildren int pid                ManagementObjectSearcher searcher   new ManagementObjectSearcher  Select   From Win32 Process Where ParentProcessID     pid           ManagementObjectCollection moc   searcher Get             foreach  ManagementObject mo in moc                        try                               KillProcessAndChildren Convert ToInt32 mo  ProcessID                                catch                               break                                   try                       Process proc   Process GetProcessById pid               proc Kill                      catch  ArgumentException                           Process already exited

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browser close   will close only the current chrome window   browser quit   should close all of the open windows  then exit webdriver

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Observed on version 3 141 0   If you initialize your ChromeDriver with just ChromeOptions  quit   will not close out chromedriver exe       ChromeOptions chromeOptions   new ChromeOptions        ChromeDriver driver   new ChromeDriver chromeOptions             do stuff        driver quit     If you create and pass in a ChromeDriverService  quit   will close chromedriver exe out correctly       ChromeDriverService driverService   ChromeDriverService CreateDefaultService        ChromeOptions chromeOptions   new ChromeOptions        ChromeDriver driver   new ChromeDriver driverService  chromeOptions             do stuff        driver quit

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Theoretically  calling browser Quit will close all browser tabs and kill the process   However  in my case I was not able to do that - since I running multiple tests in parallel  I didn t wanted to one test to close windows to others  Therefore  when my tests finish running  there are still many  chromedriver exe  processes left running   In order to overcome that  I wrote a simple cleanup code  C     Process   chromeDriverProcesses    Process GetProcessesByName  chromedriver     foreach var chromeDriverProcess in chromeDriverProcesses         chromeDriverProcess Kill

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I came here initially thinking surely this would have been answered resolved but after reading all the answers I was a bit surprised no one tried to call all three methods together   try       blah   catch       blah   finally       driver Close       Close the chrome window     driver Quit       Close the console app that was used to kick off the chrome window     driver Dispose       Close the chromedriver exe     I was only here to look for answers and didn t intend to provide one  So the above solution is based on my experience only  I was using chrome driver in a C  console app and I was able to clean up the lingering processes only after calling all three methods together

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Code c   using System Diagnostics   using System Management           public void KillProcessAndChildren string p name                ManagementObjectSearcher searcher   new ManagementObjectSearcher             Select   From Win32 Process Where Name       p name                 ManagementObjectCollection moc   searcher Get            foreach  ManagementObject mo in moc                         try                               KillProcessAndChildren Convert ToInt32 mo  ProcessID                                catch  ArgumentException                                break                                   and this function          public void KillProcessAndChildren int pid                ManagementObjectSearcher searcher   new ManagementObjectSearcher            Select   From Win32 Process Where ParentProcessID     pid           ManagementObjectCollection moc   searcher Get            foreach  ManagementObject mo in moc                         try                               KillProcessAndChildren Convert ToInt32 mo  ProcessID                                catch                               break                                   try                       Process proc   Process GetProcessById pid                proc Kill                      catch  ArgumentException                           Process already exited                    Calling                  try                                KillProcessAndChildren  chromedriver exe                              catch

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I have used the below in nightwatch js in afterEach hooks   afterEach  function browser  done           performing an async operation     setTimeout function                finished async duties         done            browser closeWindow            browser end           200        closeWindow   just simply closes the window   But wont work for multiple windows opened   Whereas  end   ends all the remaining chrome processes

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Kill Multiple Processes From the Command Line The first thing you   ll need to do is open up a command prompt  and then use the taskkill command with the following syntax   taskkill  F  IM  lt processname exe gt   T   These parameters will forcibly kill any process matching the name of the executable that you specify  For instance  to kill all iexplore exe processes  we   d use   taskkill  F  IM iexplore exe

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So  you can use the following   driver close     Close the browser  emulates hitting the close button   driver quit     Quit the browser  emulates selecting the quit option   driver dispose     Exit the browser  tries to close every tab  then quit   However  if you are STILL running into issues with hanging instances  as I was   you might want to also kill the instance  In order to do that  you need the PID of the chrome instance   import os import signal  driver   webdriver Chrome   driver get   http   stackoverflow com     def get pid passdriver       chromepid   int driver service process pid      return  chromepid   def kill chrome thepid      try          os kill pid  signal SIGTERM          return 1     except          return 0  print   Loaded thing  now I mah kill it    try      driver close       driver quit       driver dispose   except      pass  kill chrome chromepid    If there s a chrome instance leftover after that  I ll eat my hat

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I had the same issue when running it in Python and I had to manually run  killall  command to kill all processes  However when I implemented the driver using the Python context management protocol all processes were gone  It seems that Python interpreter does a really good job of cleaning things up    Here is the implementation   class Browser      def   enter   self           self options   webdriver ChromeOptions           self options add argument  headless           self driver   webdriver Chrome chrome options self options          return self      def   exit   self  exc type  exc val  exc tb           self driver close           self driver quit     And the usage   with Browser   as browser      browser navigate to page

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For Ubuntu Linux users  -   the command is either pkill or killall   pkill is generally recommended  since on some systems  killall will actually kill all processes

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You should apply close before than quit      driver close   driver quit

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I am using Protractor with directConnect  Disabling the  --no-sandbox  option fixed the issue for me      Capabilities to be passed to the webdriver instance  capabilities       directConnect   true     browserName    chrome     chromeOptions          args               --headless              --hide-scrollbars            --disable-software-rasterizer            --disable-dev-shm-usage              --no-sandbox            incognito            --disable-gpu            --window-size 1920x1080

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There is another way which is working only for windows  but now it is deprecated  it works for previous selenium releases  it works on 3 11 0 version    import org openqa selenium os WindowsUtils    WindowsUtils killByName  chromedriver exe      any process name you want

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Calling close and then quit will kill the driver running process    driver close     driver quit

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I know this is somewhat of an old question  but I thought I d share what worked for me  I was having problems with Eclipse -- it wouldn t kill the processes  and so I had a bunch of phantom processes hanging around after testing the code using the Eclipse runner   My solution was to run Eclipse as administrator  That fixed it for me  Seems that Windows wasn t permitting Eclipse to close the process it spawned

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per the Selenium API  you really should call browser quit   as this method will close all windows and kills the process  You should still use browser quit        However   At my workplace  we ve noticed a huge problem when trying to execute chromedriver tests in the Java platform  where the chromedriver exe actually still exists even after using browser quit     To counter this  we created a batch file similar to this one below  that just forces closed the processes   kill chromedriver bat   echo off rem   just kills stray local chromedriver exe instances  rem   useful if you are trying to clean your project  and your ide is complaining   taskkill  im chromedriver exe  f   Since chromedriver exe is not a huge program and does not consume much memory  you shouldn t have to run this every time  but only when it presents a problem  For example when running Project- Clean in Eclipse

[selenium] release Selenium chromedriver.exe from memory

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