Description
Hardware-accelerated program tracing on FreeBSD
Hardware tracing facilities are designed to capture various metrics and
information about software execution with a minimal performance overhead,
making them a valuable tool for performance analyses and debugging. FreeBSD
recently gained a new in-kernel framework for hardware-accelerated tracing
technologies (hwt(8) [1]) with support for ARM64 and Intel CPUs.
This talk will cover the work that went into adding support for Intel's
Processor Trace technology in hwt(8). We'll start by covering several key concepts
related to hardware-accelerated tracing and use them to explore the architecture of
FreeBSD's hwt(8) framework. We'll then move on to a case study of Intel Processor Trace
technology, giving a brief overview of its features before diving into key implementation details.
The talk will also include a short demo of hwt(8)'s features on the Intel platform.
[1] https://wiki.freebsd.org/hwt
| One-line summary | Hardware-accelerated program tracing on FreeBSD - exploring hwt(8) and Intel PT |
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