From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id 0DCB65AAE for ; Thu, 29 Jan 2015 09:48:44 +0100 (CET) Received: from mgw.gov.kz (mx.ctsat.kz [178.89.4.95]) by mgw.gov.kz with ESMTP id t0T8mfEv031846-t0T8mfEw031846; Thu, 29 Jan 2015 14:48:41 +0600 Received: from EXCASHUB1.rgp.local (192.168.40.51) by EdgeForefront.rgp.local (192.168.40.59) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 29 Jan 2015 14:47:29 +0600 Received: from r220.rgp.local (192.168.59.10) by excashub1.rgp.local (192.168.40.48) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 29 Jan 2015 14:48:45 +0600 From: Yerden Zhumabekov To: Date: Thu, 29 Jan 2015 14:48:11 +0600 Message-ID: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz> References: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [192.168.59.10] X-FEAS-SYSTEM-WL: e_zhumabekov@sts.kz Subject: [dpdk-dev] [PATCH v6 0/7] rte_hash_crc reworked to be platform-independent X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Jan 2015 08:48:45 -0000 This is a rework of my previous patches improving performance of rte_hash_crc. Summary of changes: * software implementation of CRC32 introduced; * in the runtime, algorithm can fall back to software version if CPU doesn'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 built-in intrinsics; * rte_hash_crc() function performance significantly improved. v6 changes: * added 'const' qualifier to crc32c lookup tables declaration. v5 changes: * given up gcc's builtin SSE4.2 intrinsics; * add assembly code for emitting SSE4.2 instructions. v4 changes: * icc-specific compile checks removed. v3 changes: * setting default algorithm implementation as a constructor while application startup; * crc32 software implementation improved; * removed compile-time checks from test_hash_perf and test_hash. v2 changes: * added CRC32 software implementation; * added rte_hash_crc_set_alg() function to control availability of SSE4.2; * added fallback to sw crc32 in case SSE4.2 is not available, or if SSE4.2 is intentionally disabled. Initial version (v1) changes: * added rte_hash_crc_8byte() function to calculate CRC32 on 8-byte operand; * reworked rte_hash_crc() function which leverages both versions of CRC32 hash calculation functions with 4 and 8-byte operands. Yerden Zhumabekov (7): hash: add software CRC32 implementation hash: add assembly implementation of CRC32 intrinsics hash: replace built-in functions implementing SSE4.2 hash: add rte_hash_crc_8byte function hash: add fallback to software CRC32 implementation hash: rte_hash_crc() slices data into 8-byte pieces test: remove redundant compile checks app/test/test_hash.c | 7 - app/test/test_hash_perf.c | 11 - lib/librte_hash/rte_hash_crc.h | 459 +++++++++++++++++++++++++++++++++++++++- 3 files changed, 448 insertions(+), 29 deletions(-) -- 1.7.9.5