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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 19:14, 24 August 2009
, 24 August 2009→August 24, 2009
Joel Reymont (talk | contribs) |
Joel Reymont (talk | contribs) |
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My DTrace scripts live [http://github.com/wagerlabs/firefox-startup/tree/master here]. | My DTrace scripts live [http://github.com/wagerlabs/firefox-startup/tree/master here]. | ||
Have you seen this kind of error before? | |||
<pre> | |||
dtrace: error on enabled probe ID 27 (ID 22130: pid34547:libSystem.B.dylib:dlopen:entry): invalid address (0x2ac204) in action #1 at DIF offset 28 | |||
dtrace: error on enabled probe ID 2 (ID 22782: pid34547:dyld:dlopen:entry): invalid address (0x2ac204) in action #1 at DIF offset 28 | |||
</pre> | |||
More likely than not, you are using copyinstr on memory that hasn't been paged in yet. Try saving the pointer on entry and doing the copying on return or later. | |||