title: Finding a bottleneck when loading a webpage?
body: <p><strong>UPDATE 1:</strong></p>
  
  <p>After doing an strace on the server, I have discovered that the mmap's process is taking 90% of this processing time.  I've discoverd that 1 of the pages is taking a minute to load.  </p>
  
  <p>So I found this link:
  <a href="https://stackoverflow.com/questions/3021799/php-script-keeps-doing-mmap-munmap">PHP script keeps doing mmap/munmap</a></p>
  
  <p>It possibly shows the same problem.  However, I don't understand what the anwer means by correctly disabling the php error handlers?</p>
  
  <p><strong>ORIGINAL QUESTION:</strong></p>
  
  <p>How do I check for bottle necks on my web server when loading a specific web page which is being served by my server?</p>
  
  <p>For some reason, a couple of pages on my site have become very slow, and I am not sure where the slowness is happening.</p>
  
  <p>Screenshot from Chrome Dev Tools:</p>
  
  <p><a href="https://i.stack.imgur.com/wMpLV.png" rel="nofollow noreferrer">Click here to enlarge</a>:
  <img src="https://i.stack.imgur.com/wMpLV.png" alt="enter image description here"></p>
  
  <p>So basically, I need to find out what is taking this section to long to load?  Client Side web tools can't seem to break this down?</p>