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=-2.8 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,T_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 996FE1F404 for ; Tue, 6 Feb 2018 20:11:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753081AbeBFULB (ORCPT ); Tue, 6 Feb 2018 15:11:01 -0500 Received: from mail-pf0-f174.google.com ([209.85.192.174]:38746 "EHLO mail-pf0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752742AbeBFUKu (ORCPT ); Tue, 6 Feb 2018 15:10:50 -0500 Received: by mail-pf0-f174.google.com with SMTP id q79so1107307pfl.5 for ; Tue, 06 Feb 2018 12:10:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=OHwOX6j6NV6j6kwfF2WmPRcJjOyloomWOIaNL3ZzItk=; b=GPpgiLlueOWY6wUMtJmpD6lqXqdbFx2uBDuJe38pQHZM4OSeik29daW4p46GS+IH6P 3oD1dOGbltfFZXc0gBgCtIaLrfZ8IfIACJuKF8ygZKaRs2vYB8bkCZicbWzAaScsnP/m gCJshm+5c0IYIExMcGcmpEW7dvR0YE0GPZUIdbmH2OHviM7wKaczDEtonVFG5QSmurYb BNwp+vTDswUkI+KDuqIfh1jwO6PlENp/Qf6YPMcw3krQBMjUsHgCb3r2ijuz1po0aJ4L 4eYyyB2rLJ2FxMam2+8aK6MgHTjDVkTDjI5w0zNGvtlkO3AS0mWIFi85LCeaDJWR3Cx1 mWUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=OHwOX6j6NV6j6kwfF2WmPRcJjOyloomWOIaNL3ZzItk=; b=qC2Blg8V7//WvSTFFRh3PTKbtaOhPeYL/3GIPaD2fpVHc5jaUuUrE2ANRvRAjJaYyy o3kmhgn5vpwxmRNsS0ts9rlNE8HUKwjs7r7ZBpRYZC/Ej+iuyy/FynQyEM3K7GALemAf SWzhCjzMU8+ILNyFAmAh3+pXajldX9dWiDGTGBcWGMY92NLel+XEBNA2Yv9g2iUIUwam zkIK+VP16VyY6mdH7hW9+kBoqR4IuM8TeHTkr2B1qJ0GUnyn1zuhN2pga5a5OItdzlpo 3KnvGYVMzuxi+J2aoyHixnQnyU5Rt5qKEl+5Xp0E6e+VaygogCPv2UJ1ULjKY/w4v4DG 76fw== X-Gm-Message-State: APf1xPDlhBYoC4rsQXoYyA4R+ZuG9j0Mxv3R13G5ivb3bM9WGvVUUoGf vt37aYRy2Y+IEHbrQiyfwGM= X-Google-Smtp-Source: AH8x227vfvdUNUeC9qPIFaJZuktDE63JXehZC7fndIbXjcNgriSyNb8InBrMw0qdhVXDCLnZJabtpQ== X-Received: by 10.99.0.139 with SMTP id 133mr2825160pga.267.1517947850045; Tue, 06 Feb 2018 12:10:50 -0800 (PST) Received: from aiede.svl.corp.google.com ([2620:0:100e:422:4187:1d6c:d3d6:9ce6]) by smtp.gmail.com with ESMTPSA id v28sm19353838pgc.47.2018.02.06.12.10.49 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 06 Feb 2018 12:10:49 -0800 (PST) Date: Tue, 6 Feb 2018 12:10:47 -0800 From: Jonathan Nieder To: Ian Norton Cc: git@vger.kernel.org Subject: Re: Are concurrent git operations on the same repo safe? Message-ID: <20180206201047.GE104086@aiede.svl.corp.google.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.2 (2017-12-15) Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Ian Norton wrote: > Specifically I'm trying to speed up "git > submodule update" by doing several at the same time. Can you say more about this? E.g. how can I reproduce your experience? Is there a script I can run? Thanks, Jonathan