Selenium-Python-相同的代码适用于firefox，但适用于chrome则慢10分钟

Question

I want to click a button after an image is visible/ loaded, the test takes 10 min to run with Chrome Vs 0:00:00.029671 with firefox. It's too slow , i'd rather be running test manually. How can i have the same time execution ? i'm desperate , taking me days ...with multiple code solution from internet

I upgrade google Chrome 75.0.3770.90 and ChromeDriver
I added some options to run chrome :(not very helpful in this case)
      options.add_argument('--no-sandbox')  
      options.add_argument('--disable-gpu')  
      options.add_argument('start-maximized') 
      options.add_argument('disable-infobars')
      options.add_argument("--disable-extensions")

connectionStatus = True

while connectionStatus == True:
    try:
        WebDriverWait(conn.driver, 10).until(ec.visibility_of_element_located(
            (By.CSS_SELECTOR, "img[src='../public/images//disconnect.png']")))
        element = conn.driver.find_element(By.CSS_SELECTOR, 'img[src="../public/images//disconnect.png"]')
        element.is_displayed

        print("disconnect")
        connectionStatus = False
    except NoSuchElementException as e:
        print("Waiting for M to disconnect from VW")
        time.sleep(10)
    except TimeoutException:
        print("TIMEOUT - Element not found: ")

    conn.driver.find_element(By.CSS_SELECTOR, "#btnSendUpd").click()

Execution:

Start:  2019-06-18 16:13:06.710734
TIMEOUT - Element not found: 
Diff =  0:05:00.004450
disconnect
Diff =  0:05:00.046355


NB: the code html contains only css , not ID to use findElementById

Windows 10 - 64bits(I use chromedriver 32bits-they say that is working on 64bits)
Selenium 3.141.0

Answer 1

I was told that the website i'm testing works with Hidden Iframe (Comet Programming with Javascript), A basic technique for dynamic web application is to use a hidden iframe HTML element (an inline frame, which allows a website to embed one HTML document inside another). This invisible iframe is sent as a chunked block, which implicitly declares it as infinitely long (sometimes called "forever frame")

I checked "development tool"=> Network : it's like the script never stop F12-Network-Chrome , and i think that Chrome is waiting for it to finish, that's why he is too long (Firefox doesn't)

As a workaround i added this line to force chrome to not wait page loading too long :

driver.set_page_load_timeout(7)

Execution now takes seconds:

Start:  2019-06-20 13:23:24.746351  
TIMEOUT - Element not found    
Diff =  0:00:07.004282    
disconnect    
Diff =  0:00:07.036196