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→Using DevTools Profiler
Profiles generated using the above config will have os symbols when working with nightly builds on the metro device. For profiling local builds, you'll need to set up a local [https://developer.mozilla.org/en-US/docs/Performance/Profiling_with_the_Built-in_Profiler_and_Local_Symbols_on_Windows symbol server].
Example snappy symbol server config:
<pre>
[General]
hostname = 127.0.0.1
portNumber = 8000
enableTracing = 1
remoteSymbolServer = http://symbolapi.mozilla.org:80/
; These options are unlikely to need editing by users
maxCacheEntries = 20000000
prefetchInterval = 12
prefetchThreshold = 48
prefetchMaxSymbolsPerLib = 500
defaultApp = Firefox
defaultOs = Windows
[SymbolPaths]
Firefox = T:\Mozilla\MC-REL\dist\crashreporter-symbols\
Windows = T:\Temp
</pre>
If you run into problems resolving xul symbols, try restarting the symbol server and generating a new profile. Also make sure prefetchMaxSymbolsPerLib in the ini is set to a large value.
For additional detail read {{bug|886555}} on getting things going.
