![]() | |||||||||||||
Messages in this thread |
On Wed, 13 Mar 2002, Ingo Molnar wrote: > i've written a patch for this, it's enclosed in this email. It implements > a brownean motion of IRQs, based on load patterns. The concept works > really well on Foster CPUs - eg. it will redirect IRQs to idle CPUs - but > if all CPUs are idle then the IRQs are randomly and evenly distributed > between CPUs. A nice idea. One note though -- the code depends on the TSC to be present. It would be better to use: if (cpu_has_tsc) rdtscll(random_number); and either preset random_number to a fixed value or even leave it uninitialized to have it somewhat randomly set by what was found at the stack for the TSC-less case. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available + - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
| Last update: 2005-03-22 12:21 [from the cache] ©2003-2008 | |||||||||||||