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mkaz/web_timing.py

Created July 4, 2012 14:55
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Use Selenium to Measure Web Timing
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web_timing.py
#!/usr/bin/env python
"""
Use Selenium to Measure Web Timing
Performance Timing Events flow
navigationStart -> redirectStart -> redirectEnd -> fetchStart -> domainLookupStart -> domainLookupEnd
-> connectStart -> connectEnd -> requestStart -> responseStart -> responseEnd
-> domLoading -> domInteractive -> domContentLoaded -> domComplete -> loadEventStart -> loadEventEnd
"""
from selenium import webdriver
source = "http://www.babycenter.com/"
driver = webdriver.Chrome()
driver.get(source)
navigationStart = driver.execute_script("return window.performance.timing.navigationStart")
responseStart = driver.execute_script("return window.performance.timing.responseStart")
domComplete = driver.execute_script("return window.performance.timing.domComplete")
backendPerformance = responseStart - navigationStart
frontendPerformance = domComplete - responseStart
print "Back End: %s" % backendPerformance
print "Front End: %s" % frontendPerformance
driver.quit()
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