New Relic v3.11.1 Release Notes
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If an application adds their own select method to Object/Kernel or mixes in a module that overrides the select method (as with ActionView::Helpers) we would previously have used their implementation instead of the intended IO.select, leading to all sorts of unusual errors. We now explicitly reference IO.select in the event loop to avoid these issues.
- Fix for background thread hangs on old Linux kernels
When running under Ruby 1.8.7 on Linux kernel versions 2.6.11 and earlier, the background thread used by the agent to report data would hang, leading to no data being reported. This has been be fixed.