DTrace for Rust... and everything else too!
summary
DTrace is shown instrumenting Rust binaries end to end using the USDT crate from Cargo, dynamically creating 240,000 probes for a running process and aggregating function-call counts and microsecond histograms. MacOS ARM users get working probes and a live demo proves assembly-backed macros and closure arguments let expensive serialization be skipped when a probe is off, delivering a practical zero disabled probe effect while admitting enabled probes can still cost CPU and code size.
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chapters (10)
- 0:00Introduction to DTrace
- 2:00Core values of DTrace
- 6:49DTrace instrumentation history
- 10:25User-land and dynamic tracing
- 13:32DTrace for Rust: live demo
- 24:07USDT implementation in Rust
- 26:47Handling complex data types
- 33:04Advanced probe macros
- 37:15Reflections and closing
- 40:32Q&A session
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