Add an option for hiding anonymous threads in profile output #175
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This commit adds an option for initially hiding anonymous threads in profile output. This is particularly useful for profiling RubyGems / Bundler because most threads that do real work have names associated with them. However, some routines like the popen family will [spawn a watchdog thread](https://github.com/ruby/ruby/blob/04e90fe200d736db0a32a794b8dc742fa0cb5441/lib/open3.rb#L535), and these watchdog threads clutter the profile output.
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This commit adds an option for initially hiding anonymous threads in profile output. This is particularly useful for profiling RubyGems / Bundler because most threads that do real work have names associated with them. However, some routines like the popen family will spawn a watchdog thread, and these watchdog threads clutter the profile output.
Before this patch:
After this patch:
Watchdog threads are still available from the "tracks" dropdown (if you want to see them):