fix: Log empty samples instead of collecting stacks for idle threads #2013
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indragiek
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* master: ci: benchmarking and profile generation improvements (#2022) release: 7.23.0 fix: Bad merge on CHANGELOG.md (#2020) fix: Log empty samples instead of collecting stacks for idle threads (#2013) fix: Handle failure to read thread priority gracefully (#2015) fix: Remove logging that could occur while a thread is suspended (#2014) fix: Use constant for max thread name size instead of magic number (#2012) Disable flaky tesDefaultMaxEnvelopesConcurrent (#2018) Fix build failure in unit tests (#2019) Fix address sanitizer compilation error (#1996) fix: Sauce labs iPhone 13 pro iOS version feat: Add transaction to baggage and trace headers (#1992) ci: fix ui thread starvation in benchmarks (#2009) fix: Add more descriptive deprecation message for enableProfiling (#2011) feat: Add sampling configuration for profiling (#2004) fix log message option name (#2006) meta: add armcknight as a codeowner (#2008) release: 7.22.0 fix: Disable broken LaunchUITests to unblock release (#2003) # Conflicts: # Samples/iOS-Swift/iOS-Swift/ViewControllers/PerformanceViewController.swift
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馃摐 Description
馃挕 Motivation and Context
Collecting stacks for idle threads produces this kind of data, where we have a stack that just shows the thread waiting on a function like
mach_msg_trap. Instead of collecting these stacks, we can just log an empty sample, which will prevent it from rendering in the flamegraph.This also fixes a bug in iOS 12 where we would repeatedly fail to suspend an idle thread, which broke some tests (#2000). With this new implementation we won't attempt to suspend an idle thread.
馃挌 How did you test it?
SentrySamplingProfilerLaunchUITestsand verify that they pass馃摑 Checklist
馃敭 Next steps