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.
This list is available as chronological
overview, as a tag cloud and
via the sources.
This list is also available as RSS feed
If you know any resources not listed here, or notice any dead links,
please send details to
Edwin Groothuis so that
it can be included or updated.
Robert Luciani - M:N threading in DragonflyBSD
Added: 24 May 2009
Tags: dcbsdcon, dcbsdcon2009, slides, dragonflybsd, concurrency, robert luciani
PDF (1.5 Mb, 23 pages)
Ineffective concurrency mechanisms in an operating
system can lead to low performance in both single
and multiprocessor environments. Practical setbacks
involved with attempting overly invasive kernel
changes have made it difficult in the past to
implement new and innovative concurrency systems.
This paper describes the rationale behind interfaces
in the DragonFly BSD operating system intended to
provide high performance and scalability on
multiprocessor architectures. Using a lock-free
processor centric approach, DragonFly BSD has
developed a unique thread system with the potential
for excellent scalability.
Ted Unangst - OpenBSD vs SMP, threading, and concurrency
Added: 24 May 2009
Tags: dcbsdcon, dcbsdcon2009, slides, openbsd, smp, threading, concurrency, ted unangst
PDF (675 Kb, 32 pages)
I will discuss the current status of kernel SMP
support, the rthreads thread library, and relevant
future developments. Over the years, we have
accumulated several concurrency primitives in the
kernel, causing some confusion amongst developers,
so I will lay out the origin and correct usage for
each. The talk is primarily targeted at the budding
OpenBSD kernel developer, but I will also describe
the end-user effects of each topic.