* [dpdk-dev] [PATCH] doc: add info on hyperthreading to power library
@ 2018-01-31 12:29 David Hunt
2018-02-06 13:27 ` Kovacevic, Marko
0 siblings, 1 reply; 3+ messages in thread
From: David Hunt @ 2018-01-31 12:29 UTC (permalink / raw)
To: dev; +Cc: david.hunt
Signed-off-by: David Hunt <david.hunt@intel.com>
---
doc/guides/prog_guide/power_man.rst | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/doc/guides/prog_guide/power_man.rst b/doc/guides/prog_guide/power_man.rst
index c5d62a3..fdf8f5f 100644
--- a/doc/guides/prog_guide/power_man.rst
+++ b/doc/guides/prog_guide/power_man.rst
@@ -97,6 +97,14 @@ basis. This is achieved by enabling Turbo Boost Technology in the BIOS, then
looping through the relevant cores and enabling/disabling Turbo Boost on each
core.
+Use of Power Library in a Hyper-Threaded Environment
+----------------------------------------------------
+
+In the case where the power library is in use on a system with Hyper-Threading enabled,
+the frequency on the physical core is set to the highest frequency of the Hyper-Thread siblings.
+So even though an application may request a scale down, the core frequency will
+remain at the highest frequency until all Hyper-Threads on that core request a scale down.
+
API Overview of the Power Library
---------------------------------
--
2.7.4
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-dev] [PATCH] doc: add info on hyperthreading to power library
2018-01-31 12:29 [dpdk-dev] [PATCH] doc: add info on hyperthreading to power library David Hunt
@ 2018-02-06 13:27 ` Kovacevic, Marko
2018-02-06 20:32 ` Thomas Monjalon
0 siblings, 1 reply; 3+ messages in thread
From: Kovacevic, Marko @ 2018-02-06 13:27 UTC (permalink / raw)
To: Hunt, David, dev; +Cc: Hunt, David
> Signed-off-by: David Hunt <david.hunt@intel.com>
> ---
> doc/guides/prog_guide/power_man.rst | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/doc/guides/prog_guide/power_man.rst
> b/doc/guides/prog_guide/power_man.rst
<...>
Acked-by: Marko Kovacevic <marko.kovacevic@intel.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-dev] [PATCH] doc: add info on hyperthreading to power library
2018-02-06 13:27 ` Kovacevic, Marko
@ 2018-02-06 20:32 ` Thomas Monjalon
0 siblings, 0 replies; 3+ messages in thread
From: Thomas Monjalon @ 2018-02-06 20:32 UTC (permalink / raw)
To: Hunt, David; +Cc: dev, Kovacevic, Marko
06/02/2018 14:27, Kovacevic, Marko:
> > Signed-off-by: David Hunt <david.hunt@intel.com>
> > ---
> > doc/guides/prog_guide/power_man.rst | 8 ++++++++
> > 1 file changed, 8 insertions(+)
> >
> > diff --git a/doc/guides/prog_guide/power_man.rst
> > b/doc/guides/prog_guide/power_man.rst
>
> <...>
>
> Acked-by: Marko Kovacevic <marko.kovacevic@intel.com>
Applied, thanks
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-01-31 12:29 [dpdk-dev] [PATCH] doc: add info on hyperthreading to power library David Hunt
2018-02-06 13:27 ` Kovacevic, Marko
2018-02-06 20:32 ` Thomas Monjalon
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