From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Monjalon Subject: Re: [PATCH] acl: Improve acl_bld.c sort_rules() Date: Sat, 24 Oct 2015 22:54:09 +0200 Message-ID: <1765839.LM5i19bLmN@xps13> References: <1440617118-1583-1-git-send-email-marsmith@akamai.com> <2601191342CEEE43887BDE71AB97725836A81DD8@irsmsx105.ger.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: dev@dpdk.org To: Mark Smith Return-path: Received: from mail-wi0-f173.google.com (mail-wi0-f173.google.com [209.85.212.173]) by dpdk.org (Postfix) with ESMTP id 5EA768DA1 for ; Sat, 24 Oct 2015 22:55:35 +0200 (CEST) Received: by wikq8 with SMTP id q8so117499999wik.1 for ; Sat, 24 Oct 2015 13:55:35 -0700 (PDT) In-Reply-To: <2601191342CEEE43887BDE71AB97725836A81DD8@irsmsx105.ger.corp.intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" > > Replace O(n^2) list sort with an O(n log n) merge sort. > > The merge sort is based on the solution suggested in: > > http://cslibrary.stanford.edu/105/LinkedListProblems.pdf > > Tested sort_rules() improvement: > > 100K rules: O(n^2): 31382 milliseconds; O(n log n): 10 milliseconds > > 259K rules: O(n^2): 133753 milliseconds; O(n log n): 22 milliseconds > > > > Signed-off-by: Mark Smith > > Acked-by: Konstantin Ananyev Applied, thanks