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I needed an ELF library for making pmcstat(8) cross-platform. Project deliverables include code, a test-suite for libelf(3) and a tutorial on the basics of ELF, as used in FreeBSD.
These pages are being moved to the FreeBSD Wiki at: http://wiki.freebsd.org/PmcTools.
Creating measurement, monitoring and other performance related tools for FreeBSD that build over the availability of in-CPU hardware counters in modern CPUs (initially inspired by the Digital Continuous Profiling Infrastructure project). This toolset is part of FreeBSD 6.X and later, and consists of the hwpmc(4) driver, the pmc(3) access library and pmcstat(8) and pmccontrol(8) tools.