On Mon, May 16, 2016 at 9:21 PM, Robert Campbell
<r...@robert-campbell.com> wrote:
> The release notes for 5.7 included under the assorted improvements this
> line item:
>
> "Frequency scaling has been moved from apmd(8) to the kernel with an
> improved algorithm."
>
> Does this mean my CPU's frequency is being scaled automatically? Is there
> any reason to run apud -A for example? I'm a little confused because
> running apm with near idle CPU load always shows:
>
> Performance adjustment mode: manual (<<my CPU max freq>> MHz)
>
> When I do run apmd -A however, it does appear to scale the frequency
> correctly:
>
> Performance adjustment mode: auto (<<my CPU min freq>> MHz)
>
> What's going on here?
Using "apmd -A" is equivalent to setting hw.perfpolicy=auto with sysctl:
# sysctl hw.perfpolicy=auto
Ciao!
David
--
"If you try a few times and give up, you'll never get there. But if
you keep at it... There's a lot of problems in the world which can
really be solved by applying two or three times the persistence that
other people will."
-- Stewart Nelson
