OpenBSD Multimedia Resources List
Links on this page refer to multimedia resources (podcast, vodcast,
audio recordings, video recordings, photos) related to OpenBSD or
of interest for OpenBSD users.
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Hardware Performance Monitoring Counters
Source: New York City *BSD User Group
Added: 16 November 2008
Tags: nycbug, presentation, george neville-neil, counters
MP3 version (4 Mb)
Many modern CPUs provide on chip counters for
performance events such as retiring instructions
and cache misses. The hwpmc driver and libraries
in FreeBSD give systems administrators and programmers
access to APIs which make it possible to measure
performance without modifying source code and with
minimal intrusion into application execution. This
talk will be a brief introduction to HWPMC, and how
to use it.
Bio: George Neville-Neil is the co-author with Kirk
McKusick of The Design and Implementation of the
FreeBSD Operating System. He works on networking
an operating systems for fun and profit.