From: Andi Kleen <ak@muc.de>
To: "David S. Miller" <davem@davemloft.net>
Cc: Andrew Morton <akpm@osdl.org>,
clameter@sgi.com, ak@suse.de, wli@holomorphy.com,
davem@redhat.com, raybry@sgi.com, benh@kernel.crashing.org,
manfred@colorfullife.com, linux-ia64@vger.kernel.org,
linux-kernel@vger.kernel.org, vrajesh@umich.edu,
hugh@veritas.com
Subject: Re: page fault scalability patch final : i386 tested, x86_64 support added
Date: Sat, 28 Aug 2004 01:05:42 +0000 [thread overview]
Message-ID: <20040828010542.GB50329@muc.de> (raw)
In-Reply-To: <20040827174038.67b9cbce.davem@davemloft.net>
On Fri, Aug 27, 2004 at 05:40:38PM -0700, David S. Miller wrote:
> On Fri, 27 Aug 2004 17:36:41 -0700
> Andrew Morton <akpm@osdl.org> wrote:
>
> > This reminds me - where's that 4-level pagetable patch got to?
>
> I've never seen that.
It's not really finished yet...
>
> Wow, with that thing we'd _REALLY_ need the clear_page_range()
> optimizations as 4-levels will be extremely sparse to access
> on address space teardown.
I would expect most programs to be not have that many holes, so
it will probably not make that much difference for them. But for extreme
cases like ElectricFenced agreed it may need some optimizations later.
First implementation is minimal changes only though.
Also BTW most archs will continue to use 2 or 3 levels, you only have
to switch to 4 levels if you want to.
-Andi
next prev parent reply other threads:[~2004-08-28 1:05 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-15 13:50 page fault fastpath: Increasing SMP scalability by introducing pte Christoph Lameter
2004-08-15 20:09 ` page fault fastpath: Increasing SMP scalability by introducing David S. Miller
2004-08-15 22:58 ` Christoph Lameter
2004-08-15 23:58 ` David S. Miller
2004-08-16 0:11 ` Christoph Lameter
2004-08-16 1:56 ` David S. Miller
2004-08-16 3:29 ` Christoph Lameter
2004-08-16 6:59 ` Ray Bryant
2004-08-16 15:18 ` Christoph Lameter
2004-08-16 16:18 ` page fault fastpath: Increasing SMP scalability by introducing pte locks? William Lee Irwin III
2004-08-16 14:39 ` William Lee Irwin III
2004-08-17 15:28 ` page fault fastpath patch v2: fix race conditions, stats for 8,32 Christoph Lameter
2004-08-17 15:37 ` page fault fastpath patch v2: fix race conditions, stats for 8,32 and 512 cpu SMP Christoph Hellwig
2004-08-17 15:51 ` William Lee Irwin III
2004-08-18 17:55 ` page fault fastpath patch v2: fix race conditions, stats for 8,32 Hugh Dickins
2004-08-18 20:20 ` page fault fastpath patch v2: fix race conditions, stats for 8,32 and 512 cpu SMP William Lee Irwin III
2004-08-19 1:19 ` page fault fastpath patch v2: fix race conditions, stats for Christoph Lameter
[not found] ` <B6E8046E1E28D34EB815A11AC8CA3129027B679F@mtv-atc-605e--n.corp.sgi.com>
2004-08-24 4:43 ` page fault scalability patch v3: use cmpxchg, make rss atomic Christoph Lameter
2004-08-24 5:49 ` Christoph Lameter
2004-08-24 12:34 ` Matthew Wilcox
2004-08-24 14:47 ` Christoph Lameter
[not found] ` <B6E8046E1E28D34EB815A11AC8CA3129027B67A9@mtv-atc-605e--n.corp.sgi.com>
2004-08-26 15:20 ` page fault scalability patch v4: reduce page_table_lock use, atomic Christoph Lameter
[not found] ` <B6E8046E1E28D34EB815A11AC8CA3129027B67B4@mtv-atc-605e--n.corp.sgi.com>
2004-08-27 23:20 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-08-27 23:36 ` page fault scalability patch final : i386 tested, x86_64 support added Andi Kleen
2004-08-27 23:43 ` page fault scalability patch final : i386 tested, x86_64 David S. Miller
2004-08-28 0:19 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-08-28 0:23 ` page fault scalability patch final : i386 tested, x86_64 David S. Miller
2004-08-28 0:36 ` Andrew Morton
2004-08-28 0:40 ` David S. Miller
2004-08-28 1:05 ` Andi Kleen [this message]
2004-08-28 1:11 ` David S. Miller
2004-08-28 1:17 ` page fault scalability patch final : i386 tested, x86_64 support added Andi Kleen
2004-08-28 1:02 ` Andi Kleen
2004-08-28 1:39 ` page fault scalability patch final : i386 tested, x86_64 Andrew Morton
2004-08-28 2:08 ` Paul Mackerras
2004-08-28 3:32 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-08-28 3:42 ` page fault scalability patch final : i386 tested, x86_64 Andrew Morton
2004-08-28 4:24 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-08-28 5:39 ` page fault scalability patch final : i386 tested, x86_64 Andrew Morton
2004-08-28 5:58 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-08-28 6:03 ` page fault scalability patch final : i386 tested, x86_64 support added William Lee Irwin III
2004-08-28 6:06 ` page fault scalability patch final : i386 tested, x86_64 Andrew Morton
2004-08-30 17:02 ` page fault scalability patch final : i386 tested, x86_64 support added Herbert Poetzl
2004-08-30 17:05 ` Andi Kleen
2004-08-28 13:19 ` page fault scalability patch final : i386 tested, x86_64 Andi Kleen
2004-08-28 15:48 ` page fault scalability patch final : i386 tested, x86_64 support added Matt Mackall
2004-09-01 4:13 ` page fault scalability patch final : i386 tested, x86_64 Benjamin Herrenschmidt
2004-09-02 21:26 ` page fault scalability patch final : i386 tested, x86_64 support added Andi Kleen
2004-09-02 21:55 ` page fault scalability patch final : i386 tested, x86_64 David S. Miller
2004-08-28 21:41 ` page fault scalability patch final : i386 tested, x86_64 support added Daniel Phillips
2004-09-01 4:24 ` page fault scalability patch final : i386 tested, x86_64 Benjamin Herrenschmidt
2004-09-01 5:22 ` David S. Miller
2004-09-01 16:43 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-09-01 23:09 ` page fault scalability patch final : i386 tested, x86_64 Benjamin Herrenschmidt
[not found] ` <Pine.LNX.4.58.0409012140440.23186@schroedinger.engr.sgi.com>
[not found] ` <20040901215741.3538bbf4.davem@davemloft.net>
2004-09-02 5:18 ` page fault scalability patch final : i386 tested, x86_64 support added William Lee Irwin III
2004-09-09 15:38 ` page fault scalability patch: V7 (+fallback for atomic page table Christoph Lameter
2004-09-02 16:24 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-09-02 20:10 ` page fault scalability patch final : i386 tested, x86_64 David S. Miller
2004-09-02 21:02 ` page fault scalability patch final : i386 tested, x86_64 support Christoph Lameter
2004-09-02 21:07 ` page fault scalability patch final : i386 tested, x86_64 David S. Miller
2004-09-18 23:23 ` page fault scalability patch V8: [0/7] Description Christoph Lameter
[not found] ` <B6E8046E1E28D34EB815A11AC8CA312902CD3243@mtv-atc-605e--n.corp.sgi.com>
2004-09-18 23:24 ` page fault scalability patch V8: [1/7] make mm->rss atomic Christoph Lameter
2004-09-18 23:26 ` page fault scalability patch V8: [2/7] avoid page_table_lock in Christoph Lameter
2004-09-19 9:04 ` page fault scalability patch V8: [2/7] avoid page_table_lock in handle_mm_fault Christoph Hellwig
2004-09-18 23:27 ` page fault scalability patch V8: [3/7] atomic pte operations for Christoph Lameter
2004-09-18 23:28 ` page fault scalability patch V8: [4/7] universally available cmpxchg Christoph Lameter
[not found] ` <200409191430.37444.vda@port.imtp.ilyichevsk.odessa.ua>
2004-09-19 12:11 ` page fault scalability patch V8: [4/7] universally available cmpxchg on i386 Andi Kleen
2004-09-20 15:45 ` page fault scalability patch V8: [4/7] universally available Christoph Lameter
[not found] ` <200409202043.00580.vda@port.imtp.ilyichevsk.odessa.ua>
2004-09-20 20:49 ` Christoph Lameter
2004-09-20 20:57 ` page fault scalability patch V8: [4/7] universally available cmpxchg on i386 Andi Kleen
[not found] ` <200409211841.25507.vda@port.imtp.ilyichevsk.odessa.ua>
2004-09-21 15:45 ` Andi Kleen
[not found] ` <200409212306.38800.vda@port.imtp.ilyichevsk.odessa.ua>
2004-09-21 20:14 ` Andi Kleen
2004-09-23 7:17 ` page fault scalability patch V8: [4/7] universally available Andy Lutomirski
2004-09-23 9:03 ` page fault scalability patch V8: [4/7] universally available cmpxchg on i386 Andi Kleen
[not found] ` <Pine.LNX.4.58.0409271204180.31769@schroedinger.engr.sgi.com>
2004-10-15 19:02 ` page fault scalability patch V10: [0/7] overview Christoph Lameter
2004-10-15 19:03 ` page fault scalability patch V10: [1/7] make rss atomic Christoph Lameter
2004-10-15 19:04 ` page fault scalability patch V10: [2/7] defer/omit taking page_table_lock Christoph Lameter
2004-10-15 20:00 ` Marcelo Tosatti
2004-10-18 15:59 ` page fault scalability patch V10: [2/7] defer/omit taking Christoph Lameter
2004-10-19 5:25 ` [revised] " Christoph Lameter
2004-10-15 19:05 ` page fault scalability patch V10: [3/7] IA64 atomic pte operations Christoph Lameter
2004-10-15 19:06 ` page fault scalability patch V10: [4/7] cmpxchg for 386 and 486 Christoph Lameter
2004-10-15 19:06 ` page fault scalability patch V10: [5/7] i386 atomic pte operations Christoph Lameter
2004-10-15 19:07 ` page fault scalability patch V10: [6/7] x86_64 " Christoph Lameter
2004-10-15 19:08 ` page fault scalability patch V10: [7/7] s/390 " Christoph Lameter
2004-09-18 23:29 ` page fault scalability patch V8: [5/7] atomic pte operations for Christoph Lameter
2004-09-18 23:30 ` page fault scalability patch V8: [6/7] " Christoph Lameter
2004-09-18 23:31 ` page fault scalability patch V8: [7/7] " Christoph Lameter
[not found] ` <200409191435.09445.vda@port.imtp.ilyichevsk.odessa.ua>
2004-09-20 15:44 ` page fault scalability patch V8: [7/7] atomic pte operations Christoph Lameter
2004-08-15 22:38 ` page fault fastpath: Increasing SMP scalability by introducing Benjamin Herrenschmidt
2004-08-16 17:28 ` Christoph Lameter
2004-08-17 8:01 ` Benjamin Herrenschmidt
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