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=-2.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,RCVD_IN_SORBS_SPAM, RP_MATCHES_RCVD shortcircuit=no autolearn=no 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 CCDDD207FF for ; Fri, 5 May 2017 14:57:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752896AbdEEO51 (ORCPT ); Fri, 5 May 2017 10:57:27 -0400 Received: from mail-wr0-f176.google.com ([209.85.128.176]:33784 "EHLO mail-wr0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752446AbdEEO5Z (ORCPT ); Fri, 5 May 2017 10:57:25 -0400 Received: by mail-wr0-f176.google.com with SMTP id w50so5391248wrc.0 for ; Fri, 05 May 2017 07:57:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=aQ/5KbURtFTtAB2mNK6pP+MrO26rylEYyzC2GvUHIc4=; b=MhBHHS6C/UYNysrIuPyPbu3B3RQg8JauNhETv+gcR7zqYiX3X7qLBcWSaAOgpkZuG7 h2G4sVqEHQYhbR2f6s/J+qnH+It1n1tJ6hCGBqRvy/8ZEKGXvPkhfHPk3ciRgEV981/a 8622E4E1jVNtvt0R/UgkFOhN0wSINXax3hoptJIZnrnv4K5iI58swEUHgdzJ4pNpqn0P WlAlOFdeM+LzSbMXHfMXQbQa1ag/6LImKUe3BX8dQ59A2hJ73oDaCxHC1E34ww38iJ+3 4oE1hQ+EM4If61o+egmGnIjItNXdeFOl9ei2keNqwAPFDPVeWTPTfVQqmjZQu95MP4P7 TjzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=aQ/5KbURtFTtAB2mNK6pP+MrO26rylEYyzC2GvUHIc4=; b=MaeHQicG3rM+f4SbJnTmTGEN0SxNp+sv5QCNXOU9DDc6sBxjoQCTUQOrfepGJTi2fR SI8/PGa3ZgFmdVzjH3Xn+kCnPtm13UOT+4pxtnNo7Dpqs03RwqutcN/JhVqT6Jk6zavi eWgX9WyQMFWEvD4shsamvwzKtoJi79GOEJca3HGUGSkFUkwNWNCJMGNBeDXSW7Ke2u+d CVXThp44MRmHtRp2z9uvBikQUY4DpC75AcXhyltyjbhIV2wVBCz9ws69Lz9e2zI5oFY/ NrDEPlWQ5+mcFD2O8n08b9OaU2WAVTIkoI6p+VKdndgRI0jZW9HzqKy6i7BTgrLEW4xf PujA== X-Gm-Message-State: AN3rC/7jBM3AXOR50oPXbcaBoGsa9uwYF9Yd9Nii8pT4OjxKnxbh7PkL hgKKLfc/4z9XLA== X-Received: by 10.223.164.9 with SMTP id d9mr28567668wra.91.1493996244484; Fri, 05 May 2017 07:57:24 -0700 (PDT) Received: from christian-Latitude-E6330.booking.pcln.com ([185.24.142.26]) by smtp.gmail.com with ESMTPSA id k4sm1994431wmf.12.2017.05.05.07.57.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 05 May 2017 07:57:23 -0700 (PDT) From: Christian Couder X-Google-Original-From: Christian Couder To: git@vger.kernel.org, Junio C Hamano Cc: Nguyen Thai Ngoc Duy , =?UTF-8?q?=C3=86var=20Arnfj=C3=B6r=C3=B0=20Bjarmason?= , Ramsay Jones , Jeff King , Christian Couder Subject: [PATCH 0/2] split index extra bits Date: Fri, 5 May 2017 16:57:11 +0200 Message-Id: <20170505145713.8837-1-chriscool@tuxfamily.org> X-Mailer: git-send-email 2.13.0.rc1.83.g83955d3ecd.dirty MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org This patch series contains 2 patches that have already been sent to the list but have felt through the cracks. It would be nice if they could be considered for v2.13.0. Patch 1/2 (split-index: add and use unshare_split_index()) by Duy fixes a memory leak when a new shared index file is created and memory used by the old one should be freed. Patch 2/2 (p3400: add perf tests for rebasing many changes) adds a test in t/perf that can help see what performance improvements can be gained by using the split index feature. For example using this patch at one point I got the following results on a Linux machine on the Git repository: Test v2.10.0 v2.11.0 v2.12.0 origin/master ------------------------------------------------------------------------------------------------------------------------------------------------------------ 3400.2: rebase on top of a lot of unrelated changes 2.62(2.19+0.55) 2.54(2.15+0.49) -3.1% 2.59(2.19+0.49) -1.1% 2.66(2.27+0.52) +1.5% 3400.4: rebase a lot of unrelated changes without split-index 14.08(10.12+3.92) 7.20(5.85+1.36) -48.9% 8.06(6.54+1.60) -42.8% 7.53(6.40+1.12) -46.5% 3400.6: rebase a lot of unrelated changes with split-index 14.10(10.11+3.94) 6.94(5.71+1.27) -50.8% 7.99(6.49+1.57) -43.3% 6.10(5.12+1.07) -56.7% On bigger repositories results are likely to be better. Christian Couder (1): p3400: add perf tests for rebasing many changes Nguyễn Thái Ngọc Duy (1): split-index: add and use unshare_split_index() read-cache.c | 10 ++------- split-index.c | 57 ++++++++++++++++++++++++++++++++++++++------------ split-index.h | 1 + t/perf/p3400-rebase.sh | 22 ++++++++++++++++++- 4 files changed, 68 insertions(+), 22 deletions(-) -- 2.13.0.rc1.83.g83955d3ecd.dirty