From: Seth Jennings <sjenning@linux.vnet.ibm.com>
To: Konrad Rzeszutek Wilk <konrad@darnok.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Nitin Gupta <ngupta@vflare.org>, Minchan Kim <minchan@kernel.org>,
Robert Jennings <rcj@linux.vnet.ibm.com>,
linux-mm@kvack.org, devel@driverdev.osuosl.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] zsmalloc improvements
Date: Fri, 06 Jul 2012 10:07:11 -0500 [thread overview]
Message-ID: <4FF6FF1F.5090701@linux.vnet.ibm.com> (raw)
In-Reply-To: <20120704204325.GB2924@localhost.localdomain>
On 07/04/2012 03:43 PM, Konrad Rzeszutek Wilk wrote:
> On Mon, Jul 02, 2012 at 04:15:48PM -0500, Seth Jennings wrote:
>> This exposed an interesting and unexpected result: in all
>> cases that I tried, copying the objects that span pages instead
>> of using the page table to map them, was _always_ faster. I could
>> not find a case in which the page table mapping method was faster.
>
> Which architecture was this under? It sounds x86-ish? Is this on
> Westmere and more modern machines? What about Core2 architecture?
>
> Oh how did it work on AMD Phenom boxes?
I don't have a Phenom box but I have an Athlon X2 I can try out.
I'll get this information next Monday.
--
Seth
next prev parent reply other threads:[~2012-07-06 15:12 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-02 21:15 [PATCH 0/4] zsmalloc improvements Seth Jennings
2012-07-02 21:15 ` [PATCH 1/4] zsmalloc: remove x86 dependency Seth Jennings
2012-07-10 2:21 ` Minchan Kim
2012-07-10 15:29 ` Seth Jennings
2012-07-11 7:27 ` Minchan Kim
2012-07-11 18:26 ` Nitin Gupta
2012-07-11 20:32 ` Seth Jennings
2012-07-11 22:42 ` Nitin Gupta
2012-07-12 0:23 ` Seth Jennings
2012-07-02 21:15 ` [PATCH 2/4] zsmalloc: add single-page object fastpath in unmap Seth Jennings
2012-07-10 2:25 ` Minchan Kim
2012-07-02 21:15 ` [PATCH 3/4] zsmalloc: add details to zs_map_object boiler plate Seth Jennings
2012-07-10 2:35 ` Minchan Kim
2012-07-10 15:17 ` Seth Jennings
2012-07-11 7:42 ` Minchan Kim
2012-07-11 14:15 ` Seth Jennings
2012-07-12 1:15 ` Minchan Kim
2012-07-12 19:54 ` Dan Magenheimer
2012-07-12 22:46 ` Dan Magenheimer
2012-07-02 21:15 ` [PATCH 4/4] zsmalloc: add mapping modes Seth Jennings
2012-07-04 5:33 ` [PATCH 0/4] zsmalloc improvements Minchan Kim
2012-07-04 20:43 ` Konrad Rzeszutek Wilk
2012-07-06 15:07 ` Seth Jennings [this message]
2012-07-09 13:58 ` Seth Jennings
2012-07-11 19:42 ` Konrad Rzeszutek Wilk
2012-07-11 20:48 ` Seth Jennings
2012-07-12 10:40 ` Konrad Rzeszutek Wilk
2012-07-11 7:03 ` Minchan Kim
2012-07-11 14:00 ` Seth Jennings
2012-07-12 1:01 ` Minchan Kim
2012-07-11 19:16 ` Seth Jennings
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