Thread (20 messages) 20 messages, 5 authors, 2016-06-22

Re: [PATCH v5 1/8] Documentation: arm: define DT cpu capacity-dmips-mhz bindings

From: Mark Brown <broonie@kernel.org>
Date: 2016-06-15 14:05:11
Also in: linux-arm-kernel, linux-pm, lkml

On Wed, Jun 15, 2016 at 11:17:50AM +0100, Juri Lelli wrote:
+CPU capacities are obtained by running a suitable benchmark. This binding makes
+no aspersions on the validity or suitability of any particular benchmark, the
+final capacity should, however, be:
Makes no guarantees.  An aspersion is an insult!
+CPU capacities are obtained by running the Dhrystone benchmark on each CPU at
+max frequency. The obtained DMIPS score is then divided by the frequency (in
+MHz) at which the benchmark has been run, so that DMIPS/MHz are obtained.
+Such values are then normalized w.r.t. the highest score obtained in the
+system.
Perhaps worth mentioning that caches and so on should be enabled (based
on previous experience with people doing bringup)?

Attachments

Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help