From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yerden Zhumabekov <e_zhumabekov-8EHiFRVJVgQ@public.gmane.org>
Subject: Re: [PATCH v6 0/7] rte_hash_crc reworked to be
	platform-independent
Date: Mon, 2 Feb 2015 09:07:45 +0600
Message-ID: <54CEEA01.3090600@sts.kz>
References: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz>
 <cover.1417092208.git.e_zhumabekov@sts.kz>
 <20150201141356.GA3141@localhost.localdomain>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Cc: "dev-VfR2kkLFssw@public.gmane.org" <dev-VfR2kkLFssw@public.gmane.org>
To: Neil Horman <nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>
Return-path: <dev-bounces-VfR2kkLFssw@public.gmane.org>
In-Reply-To: <20150201141356.GA3141-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request-VfR2kkLFssw@public.gmane.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev-VfR2kkLFssw@public.gmane.org>
List-Help: <mailto:dev-request-VfR2kkLFssw@public.gmane.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request-VfR2kkLFssw@public.gmane.org?subject=subscribe>
Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org
Sender: "dev" <dev-bounces-VfR2kkLFssw@public.gmane.org>


01.02.2015 20:13, Neil Horman =D0=BF=D0=B8=D1=88=D0=B5=D1=82:
> On Thu, Jan 29, 2015 at 02:48:11PM +0600, Yerden Zhumabekov wrote:
>> This is a rework of my previous patches improving performance of rte_h=
ash_crc.
>>
>> Summary of changes:
>> * software implementation of CRC32 introduced;
>> * in the runtime, algorithm can fall back to software version if CPU d=
oesn't support SSE4.2;
>> * best available algorithm is automatically detected upon application =
startup;
>> * redundant compile checks removed from test utilities;
>> * assembly code for emitting SSE4.2 instructions is used instead of bu=
ilt-in intrinsics;
>> * rte_hash_crc() function performance significantly improved.
>>
>> v6 changes:
>> * added 'const' qualifier to crc32c lookup tables declaration.
> Just to be clear, this does build if you compile it against the "defaul=
t"
> machine type, correct?
> Neil

I think so, I've just successfully built it against latest snapshot with
RTE_TARGET
equal to 'x86_64-native-linuxapp-gcc'.

--=20
Sincerely,

Yerden Zhumabekov
State Technical Service
Astana, KZ