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Firefox/Projects/Startup Time Improvements/joelr notes: Difference between revisions
Firefox/Projects/Startup Time Improvements/joelr notes (view source)
Revision as of 22:07, 25 August 2009
, 25 August 2009→Current status
Joel Reymont (talk | contribs) |
Joel Reymont (talk | contribs) |
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= Current status = | = Current status = | ||
=== August | === August 25, 2009 === | ||
[http:// | Created a [http://github.com/wagerlabs/firefox-startup/blob/c0b7691c60eb0455d7475aa17777edcf3ed3d605/main-entry-probe.patch static probe that fires first thing in XRE_main] and updated my [http://github.com/wagerlabs/firefox-startup/tree/master DTrace scripts] to use it. | ||
pid$target::function:entry probes are very slow since the have to search, potentially, thousands of functions. A USDT (static) probe is just a few NOP instructions in the code that get fixed up by DTrace as needed. | |||
= Previous statuses = | |||
=== August 24, 2009 === | === August 24, 2009 === | ||
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Digging deeper... | Digging deeper... | ||
=== August 21, 2009 === | |||
[http://wagerlabs.com/post/168237170/faster-mac-firefox Blogged]. | |||
My DTrace scripts live [http://github.com/wagerlabs/firefox-startup/tree/master here]. Use like this | |||
<pre> | |||
sudo ./cold.sh static-init.d | |||
</pre> | |||
= DTrace tips and tricks = | |||
=== DTrace: timestamp vs vtimestamp === | === DTrace: timestamp vs vtimestamp === | ||