回复: [PATCH v6 0/2] Enable PMD power management on Arm

[Feifei Wang <Feifei.Wang2@arm.com>]

> -----邮件原件-----
> 发件人: David Marchand <david.marchand@redhat.com>
> 发送时间: Monday, February 20, 2023 8:07 PM
> 收件人: Feifei Wang <Feifei.Wang2@arm.com>
> 抄送: dev@dpdk.org; david.hunt@intel.com; stephen@networkplumber.org;
> thomas@monjalon.net; nd <nd@arm.com>
> 主题: Re: [PATCH v6 0/2] Enable PMD power management on Arm
> 
> On Mon, Feb 20, 2023 at 9:51 AM Feifei Wang <feifei.wang2@arm.com>
> wrote:
> >
> > For Arm aarch, use WFE instructions to enable PMD power management.
> >
> > Test Results:
> > dynamic instructions over 1sec  without wfe     with wfe        percentage
> > ampere-altra                    6,298,483,712   9,117,624       -99.855%
> > thunderx2                       6,990,909,373   3,247,226       -99.954%
> >
> > When power efficient PMD is enabled by using WFE on Arm, if no pkts
> > received, the instructions that CPU executes is reduced by 99%.
> >
> > Feifei Wang (2):
> >   eal: add 8 bits case for wait scheme
> >   eal: add power mgmt support on Arm
> >
> >  doc/guides/rel_notes/release_23_03.rst |  4 ++
> >  lib/eal/arm/include/rte_pause_64.h     | 32 +++++++++++++--
> >  lib/eal/arm/rte_cpuflags.c             |  5 +++
> >  lib/eal/arm/rte_power_intrinsics.c     | 55 ++++++++++++++++++++++++--
> >  4 files changed, 89 insertions(+), 7 deletions(-)
> 
> Fixed release notes, squashed patches and applied, thanks.
Thanks for the fix.
> 
> 
> --
> David Marchand