From: notasas@gmail.com (Grazvydas Ignotas)
To: linux-arm-kernel@lists.infradead.org
Subject: ARM hugetlb support?
Date: Mon, 20 Aug 2012 02:18:12 +0300 [thread overview]
Message-ID: <CANOLnOPLLQ=Cy5rvf5J7R96whrvLKO4HW9nVn4rQXqXCTVgCPA@mail.gmail.com> (raw)
Hello,
We are developing an application that's drawing various geometry on
1024x1024 framebuffer (lines, triangles, etc) and is running on
Cortex-A8 CPU. It seems this kind of application is suffering badly
from TLB misses, as A8 only has 32 entry TLB cache.
I've found that hugetlb support patches have been posted some months
ago [1]. I've been testing them with very good results [2]. Are there
still plans to further develop them and eventually merge them?
[1] http://marc.info/?l=linux-arm-kernel&m=132912620601308&w=2
[2] Cycle measurements of rendering full scene (using cycle counter in
A8), x1000 cycles:
normal hugetlb improvement
scene1 28507 21351 34%
scene2 11710 10138 16%
scene3 17178 13631 26%
scene4 4372 3810 15%
scene5 3525 3255 8%
--
Gra?vydas
next reply other threads:[~2012-08-19 23:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-19 23:18 Grazvydas Ignotas [this message]
2012-08-21 1:55 ` ARM hugetlb support? bill4carson
-- strict thread matches above, loose matches on Subject: below --
2012-08-20 8:27 Steve Capper
2012-08-21 9:57 ` Grazvydas Ignotas
2012-08-23 13:51 ` Steve Capper
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