On 07/02/15 16:54, Simon Wise wrote:
On 07/02/15 16:08, Simon Wise wrote:
if it is the changing of cores that is causing the problems, perhaps try setting
the pd process to a particular core ...
taskset is the program to set a process to use only a particular core, see its
manpage.
you can also get more specific and reserve one of the cores exclusively for the
main pd process using cpusets
https://raw.githubusercontent.com/torvalds/linux/master/Documentation/cgroups/cpusets.txt
or: man cpuset
this mechanism can also allocate memory and such, the manpage gives a lot of
detail, it does not seem difficult to use in a basic way, and could be very
useful in the Udoo with its 4 big and 4 little cores, say reserving one for the
main pd process, and one of the little cores for a simple interface that you
want to be as low latency as possible ... say responding to specific GPIO
events.
the big advantage for this would be that when the core is swapped the cache is
invalidated ... this may well be quite significant when doing certain audio
tasks, but I am not sure in detail.
Simon
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