From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS3215 2.6.0.0/16 X-Spam-Status: No, score=-0.8 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, URIBL_CSS,URIBL_CSS_A shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by dcvr.yhbt.net (Postfix) with ESMTP id 5B6E81F727 for ; Fri, 1 Jul 2022 17:49:22 +0000 (UTC) Authentication-Results: dcvr.yhbt.net; dkim=pass (1024-bit key; unprotected) header.d=pobox.com header.i=@pobox.com header.b="q9e5NzWq"; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230472AbiGARrh (ORCPT ); Fri, 1 Jul 2022 13:47:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51960 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230487AbiGARrf (ORCPT ); Fri, 1 Jul 2022 13:47:35 -0400 Received: from pb-smtp1.pobox.com (pb-smtp1.pobox.com [64.147.108.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E5A036B74 for ; Fri, 1 Jul 2022 10:47:33 -0700 (PDT) Received: from pb-smtp1.pobox.com (unknown [127.0.0.1]) by pb-smtp1.pobox.com (Postfix) with ESMTP id EF30213CB55; Fri, 1 Jul 2022 13:47:30 -0400 (EDT) (envelope-from junio@pobox.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; s=sasl; bh=O6A2TJOQ7XQRqCVqDo3dBBV2v2oRdQSaNZZDCt HvWik=; b=q9e5NzWqMVzHAFxoekoHiXKMuRm/YolIh9y9HhqMjOcjw1M8mBzo9o Fz9w6Pddvxk/50fwzIKhcj7eNF9zzdtg+28b0QTNUmjt2MTfOZeNy/anfpNo8SBd rGM962XPu6rn72v1hRBAs9wgokT3f4Oa/JZ5q+ZEO+5LP+8BrEtfM= Received: from pb-smtp1.nyi.icgroup.com (unknown [127.0.0.1]) by pb-smtp1.pobox.com (Postfix) with ESMTP id E56EC13CB54; Fri, 1 Jul 2022 13:47:30 -0400 (EDT) (envelope-from junio@pobox.com) Received: from pobox.com (unknown [34.82.80.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by pb-smtp1.pobox.com (Postfix) with ESMTPSA id 440E813CB53; Fri, 1 Jul 2022 13:47:30 -0400 (EDT) (envelope-from junio@pobox.com) From: Junio C Hamano To: Jeff King Cc: Johannes Schindelin , =?utf-8?Q?Ren=C3=A9?= Scharfe , git@vger.kernel.org, Rohit Ashiwal , =?utf-8?B?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason , "brian m . carlson" Subject: Re: [PATCH v3 0/5] Avoid spawning gzip in git archive References: <217a2f4d-4fc2-aaed-f5c2-1b7e134b046d@web.de> <0aa5c101-06bf-325c-efbc-6b4ef38616c5@web.de> <038r075o-5s5r-9sop-5o02-8s84428o0r54@tzk.qr> Date: Fri, 01 Jul 2022 10:47:28 -0700 In-Reply-To: (Jeff King's message of "Fri, 1 Jul 2022 12:27:17 -0400") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Pobox-Relay-ID: E0F752BE-F965-11EC-80CD-5E84C8D8090B-77302942!pb-smtp1.pobox.com Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Jeff King writes: > That will spend quite a lot of time doing hash-lookups for each tree > entry. A better raw zlib test might be: > > git cat-file --batch --batch-all-objects --unordered >/dev/null > > which will just dump each object, and should mostly be zlib and delta > reconstruction (the --unordered is important to hit the deltas in the > right order). ;-) I like --unordered has the meaning "use the order Git likes" (which is probably the packfile offset order, which we optimize for minimizing seek during delta reconstruction).