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[Bug 1744173] Re: artful: rfi-flush: Switch to new linear fallback flush

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Brian Murray <brian@xxxxxxxxxx>
Date: Fri, 19 Jan 2018 23:53:18 -0000
Reply-to: Bug 1744173 <1744173@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1744173

Title:
  artful: rfi-flush: Switch to new linear fallback flush

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  New
Status in linux source package in Xenial:
  New

Bug description:
  Change flush from congruence-first with dependencies to linear with
  no dependencies, which increases flush performance by 8x on P8, and
  3x on P9 (as measured with null syscall loop, which will have the
  flush area in the L2).

  The flush also becomes simpler and more adaptable to different cache
  geometries.

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