#RTE>> Test OK
Test Result- PASSED
-Original Message-
From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of zhihong.w...@intel.com
Sent: Monday, January 19, 2015 09:54
To: dev at dpdk.org
Subject: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
This pa
> -Original Message-
> From: EDMISON, Kelvin (Kelvin) [mailto:kelvin.edmison at alcatel-lucent.com]
> Sent: Thursday, January 29, 2015 5:48 AM
> To: Wang, Zhihong; Stephen Hemminger; Neil Horman
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK m
On 2015-01-27, 3:22 AM, "Wang, Zhihong" wrote:
>
>
>> -Original Message-
>> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of EDMISON, Kelvin
>> (Kelvin)
>> Sent: Friday, January 23, 2015 2:22 AM
>> To: dev at dpdk.org
>
> -Original Message-
> From: Ananyev, Konstantin
> Sent: Tuesday, January 27, 2015 8:20 PM
> To: Wang, Zhihong; Richardson, Bruce; 'Marc Sune'
> Cc: 'dev at dpdk.org'
> Subject: RE: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
>
>
> > -Origin
> -Original Message-
> From: Ananyev, Konstantin
> Sent: Tuesday, January 27, 2015 11:30 AM
> To: Wang, Zhihong; Richardson, Bruce; Marc Sune
> Cc: dev at dpdk.org
> Subject: RE: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
>
>
> > -Ori
> -Original Message-
> From: Wang, Zhihong
> Sent: Tuesday, January 27, 2015 1:42 AM
> To: Ananyev, Konstantin; Richardson, Bruce; Marc Sune
> Cc: dev at dpdk.org
> Subject: RE: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
>
>
> > -Origin
> -Original Message-
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of EDMISON, Kelvin
> (Kelvin)
> Sent: Friday, January 23, 2015 2:22 AM
> To: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
>
>
> On 2015-01-21,
.
Thanks
Zhihong (John)
From: lukego at gmail.com [mailto:luk...@gmail.com] On Behalf Of Luke Gorrie
Sent: Monday, January 26, 2015 4:03 PM
To: Wang, Zhihong
Cc: dev at dpdk.org; snabb-devel at googlegroups.com
Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
On 26 January 2015 at 02:30
> -Original Message-
> From: Ananyev, Konstantin
> Sent: Tuesday, January 27, 2015 2:29 AM
> To: Wang, Zhihong; Richardson, Bruce; Marc Sune
> Cc: dev at dpdk.org
> Subject: RE: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
> Hi Zhihong,
>
> > --
Hi Zhihong,
> -Original Message-
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Wang, Zhihong
> Sent: Friday, January 23, 2015 6:52 AM
> To: Richardson, Bruce; Marc Sune
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK m
On 26 January 2015 at 02:30, Wang, Zhihong wrote:
> Hi Luke,
>
>
>
> I?m very glad that you?re interested in this work. J
>
Great :).
I never published any performance data, and haven?t run cachebench.
>
> We use test_memcpy_perf.c in DPDK to do the test mainly, because it?s the
>
> -Original Message-
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Bruce Richardson
> Sent: Wednesday, January 21, 2015 9:26 PM
> To: Marc Sune
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
> On Wed, Jan 21,
> -Original Message-
> From: Neil Horman [mailto:nhorman at tuxdriver.com]
> Sent: Wednesday, January 21, 2015 8:38 PM
> To: Ananyev, Konstantin
> Cc: Wang, Zhihong; Richardson, Bruce; dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
&
On 22 January 2015 at 14:29, Jay Rolette wrote:
> Microseconds matter. Scaling up to 100GbE, nanoseconds matter.
>
True. Is there a cut-off point though? Does one nanosecond matter?
AVX512 will fit a 64-byte packet in one register and move that to or from
memory with one instruction. L1/L2
> >>>>From: Richardson, Bruce
>> > > >>>>Sent: Wednesday, January 21, 2015 12:15 AM
>> > > >>>>To: Neil Horman
>> > > >>>>Cc: Wang, Zhihong; dev at dpdk.org
>> > > >>>>Subject: Re: [
On Thu, Jan 22, 2015 at 12:27 PM, Luke Gorrie wrote:
> On 22 January 2015 at 14:29, Jay Rolette wrote:
>
>> Microseconds matter. Scaling up to 100GbE, nanoseconds matter.
>>
>
> True. Is there a cut-off point though?
>
There are always engineering trade-offs that have to be made. If I'm
Howdy!
This memcpy discussion is absolutely fascinating. Glad to be a fly on the
wall!
On 21 January 2015 at 22:25, Jim Thompson wrote:
>
> The differences with DPDK are that a) entire cores (including the AVX/SSE
> units and even AES-NI (FPU) are dedicated to DPDK, and b) DPDK is a library,
>
On Thu, Jan 22, 2015 at 3:06 AM, Luke Gorrie wrote:
Here is another thought: when is it time to start thinking of packet copy
> as a cheap unit-time operation?
>
Pretty much never short of changes to memory architecture, IMO. Frankly,
there are never enough cycles for deep packet inspection
On Wed, 21 Jan 2015 15:25:40 -0600
Jim Thompson wrote:
> I?m not as concerned with compile times given the potential performance boost.
Compile time matters. Right now full build of large project is fast.
Like 2 minutes or less.
Is this only the test applications (which can be disabled from
n 20, 2015 at 10:11:18AM -0500, Neil Horman wrote:
> > > >>>>>On Tue, Jan 20, 2015 at 03:01:44AM +, Wang, Zhihong wrote:
> > > >>>>>>>-Original Message-
> > > >>>>>>>From: Neil Horman [mailto:nhorman at tux
une wrote:
>>>>>> On 21/01/15 04:44, Wang, Zhihong wrote:
>>>>>>>> -Original Message-
>>>>>>>> From: Richardson, Bruce
>>>>>>>> Sent: Wednesday, January 21, 2015 12:15 AM
>>>>>>>
On 21/01/15 04:44, Wang, Zhihong wrote:
>
>> -Original Message-
>> From: Richardson, Bruce
>> Sent: Wednesday, January 21, 2015 12:15 AM
>> To: Neil Horman
>> Cc: Wang, Zhihong; dev at dpdk.org
>> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy
t;>From: Richardson, Bruce
> >>>>Sent: Wednesday, January 21, 2015 12:15 AM
> >>>>To: Neil Horman
> >>>>Cc: Wang, Zhihong; dev at dpdk.org
> >>>>Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
> >>>>
> >
Cc: Wang, Zhihong; dev at dpdk.org
> >>Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
> >>
> >>On Tue, Jan 20, 2015 at 10:11:18AM -0500, Neil Horman wrote:
> >>>On Tue, Jan 20, 2015 at 03:01:44AM +, Wang, Zhihong wrote:
> >>>>
&
> -Original Message-
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Wang, Zhihong
> Sent: Wednesday, January 21, 2015 3:44 AM
> To: Richardson, Bruce; Neil Horman
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
&g
Horman
> > Cc: dev at dpdk.org
> > Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
> >
> >
> >
> > > -Original Message-
> > > From: Richardson, Bruce
> > > Sent: Wednesday, January 21, 2015 12:15 AM
> > > To: Neil Horma
> -Original Message-
> From: Neil Horman [mailto:nhorman at tuxdriver.com]
> Sent: Monday, January 19, 2015 9:02 PM
> To: Wang, Zhihong
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK memcpy optimization
>
> On Mon, Jan 19, 2015 at 09:53:
On Mon, Jan 19, 2015 at 09:53:30AM +0800, zhihong.wang at intel.com wrote:
> This patch set optimizes memcpy for DPDK for both SSE and AVX platforms.
> It also extends memcpy test coverage with unaligned cases and more test
> points.
>
> Optimization techniques are summarized below:
>
> 1.
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