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POUsing --js-flags in Google Chrome to get --trace output
 

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    <p>I've looked through various sources online and done a number of Google searches, but I can't seem to find any specific instructions as to how to work with the V8 --trace-* flags in Google Chrome. I've seen a few "You can do this as well in Chrome", but I haven't been able to find what I'm looking for, which is output like this: (snippets are near the near bottom of the post) <a href="http://floitsch.blogspot.ca/2012/03/optimizing-for-v8-introduction.html" rel="noreferrer">Optomizing for V8</a>.</p> <p>I found reference that the data is logged to a file: <a href="http://code.google.com/p/v8/wiki/ProfilingChromiumWithV8" rel="noreferrer">Profiling Chromium with V8</a> and I've found that the file is likely named v8.log: (Lost that link) but I haven't found any clues as to how to generate that file, or where it is located. It didn't appear to be in the chrome directory or the user directory.</p> <p>Apparently I need to enable .map files for chrome.dll as well, but I wasn't able to find anything to help me with that.</p> <p>The reason I would prefer to use Chrome's V8 for this as opposed to building V8 and using a shell is because the JavaScript I would like to test makes use of DOM, which I do not believe would be included in the V8 shell. However if it is, that would be great to know, then I can rewrite the code to work sans-html file and test. But my guess is that V8 by itself is sans-DOM access, like node.js</p> <p>So to sum things up;</p> <ul> <li>Running Google Chrome Canary on Windows 7 ultimate x64</li> <li>Shortcut target is <code>"C:\Users\ArkahnX\AppData\Local\Google\Chrome SxS\Application\chrome.exe" --no-sandbox --js-flags="--trace-opt --trace-bailout --trace-deop" --user-data-dir=C:\chromeDebugProfile</code></li> <li>Looking for whether <a href="http://code.google.com/p/v8/wiki/ProfilingChromiumWithV8" rel="noreferrer">this</a> type of output can be logged from chrome <ul> <li>If so, where would the log be?</li> <li>If not, what sort of output should I expect, and again, where could I find it?</li> </ul></li> </ul> <p>Thank you for any assistance!</p> <h1>Amending with how I got the answer to work for me</h1> <p>Using the below answer, I installed python to it's default directory, and modified the script so it had the full path to chrome. From there I set file type associations to .py files to python and executed the script. Now every time I open Chrome Canary it will run that python script (at least until I restart my pc, then I'll have to run that script again)</p> <p>The result is exactly what I was looking for!</p>
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