From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD shortcircuit=no autolearn=ham autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 8A8A8209F1 for ; Fri, 7 Apr 2017 21:21:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756752AbdDGVVB (ORCPT ); Fri, 7 Apr 2017 17:21:01 -0400 Received: from siwi.pair.com ([209.68.5.199]:57581 "EHLO siwi.pair.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756740AbdDGVU6 (ORCPT ); Fri, 7 Apr 2017 17:20:58 -0400 Received: from jeffhost-ubuntu.reddog.microsoft.com (unknown [65.55.188.213]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by siwi.pair.com (Postfix) with ESMTPSA id 22175845E7; Fri, 7 Apr 2017 17:20:56 -0400 (EDT) From: git@jeffhostetler.com To: git@vger.kernel.org Cc: gitster@pobox.com, peff@peff.net, Jeff Hostetler Subject: [PATCH v7 0/3] read-cache: speed up add_index_entry Date: Fri, 7 Apr 2017 21:20:44 +0000 Message-Id: <20170407212047.64950-1-git@jeffhostetler.com> X-Mailer: git-send-email 2.9.3 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Jeff Hostetler Version 7 addresses size_t and casting issues in strcmp_offset() and replaces shell test function with an awk expression to make the perf test run faster. ================ Teach add_index_entry_with_check() and has_dir_name() to avoid index lookups if the given path sorts after the last entry in the index. This saves at least 2 binary searches per entry. This improves performance during checkout and read-tree because merge_working_tree() and unpack_trees() processes a list of already sorted entries. Jeff Hostetler (3): read-cache: add strcmp_offset function p0004-read-tree: perf test to time read-tree read-cache: speed up add_index_entry during checkout Makefile | 1 + cache.h | 1 + read-cache.c | 66 +++++++++++++++++++++++- t/helper/.gitignore | 1 + t/helper/test-strcmp-offset.c | 64 +++++++++++++++++++++++ t/perf/p0004-read-tree.sh | 117 ++++++++++++++++++++++++++++++++++++++++++ t/t0065-strcmp-offset.sh | 11 ++++ 7 files changed, 259 insertions(+), 2 deletions(-) create mode 100644 t/helper/test-strcmp-offset.c create mode 100755 t/perf/p0004-read-tree.sh create mode 100755 t/t0065-strcmp-offset.sh -- 2.9.3