From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.5 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI shortcircuit=no autolearn=ham autolearn_force=no version=3.4.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 7D28D1F404 for ; Mon, 17 Sep 2018 15:58:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728235AbeIQV0M (ORCPT ); Mon, 17 Sep 2018 17:26:12 -0400 Received: from mail-pf1-f172.google.com ([209.85.210.172]:34082 "EHLO mail-pf1-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727881AbeIQV0L (ORCPT ); Mon, 17 Sep 2018 17:26:11 -0400 Received: by mail-pf1-f172.google.com with SMTP id k19-v6so7779191pfi.1 for ; Mon, 17 Sep 2018 08:58:13 -0700 (PDT) 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=lZlO1EM1nn0USoEh4KXMXi90545rmnVCGSWTbNtQk8s=; b=QbgLRN9psXgeBNjSJVZK/5Q5sjTqvMqDtHMdnuvpOYd90Kt2TmtVs2ROh7F5apy4jI vkTOQWu//F7RDhMsQ107XNNfFprLiesO8QC8VY4lkKcnv4xDLC8TKG+oePboougiuD3/ OFo/ejqQRyX94oUPTVPOzjL9HXxjgfcDkgozqwR8N1/p8N+Dh36C4hEllKaKPbmCwdW6 SjoGPU9Q64lnp5t8HuslaTouOUJibyPOOqtLnAe2aT8jvvfYeVJgTOPFA74InTE5RYY8 wKfiW6e9QHHDehU2NFlqTeneO9t0oGOk0/FfEaT1qOBImChq/KWlglfdw7LCcah9f6pj NcyQ== 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=lZlO1EM1nn0USoEh4KXMXi90545rmnVCGSWTbNtQk8s=; b=TE6xqkatMAAcJRoTQKyCMLycdoX049QCOaRqY3jx+3uo3XYuysPOwlGAjdrkdjtYNd h1FDyo9Xse1/Vdjk64RpO2FqBYeLJWL4eiJV5Q1k7iacwUwLVA0i7VspOz1naBieJQwn pG+0f32ublbmjRY40aTmeX9xrYuXUYe4ZqZYbAUg02bcVNbC1mApnTsRSJ0xOsYO3WvB 7sLEVZKA72KzBcjfYGI6K3BpRYvzAse5/K23+wgKL4+4+yR2OdINzkkYUItFaipJs7i1 vNngUG+5+4v2EU29M00GIpauslo4iVTxx5zfJNwHnO+chB5+W4qMVqhoGXJJnuIBxBs3 II9w== X-Gm-Message-State: APzg51Bz/sLvMSlkeSt0PXJ5e/c31Rf8yqL9kQplUnUK9bP01BPXIC2/ FQZyiMlRZQJQyDgMQsDKcG8AwpWe X-Google-Smtp-Source: ANB0VdZWidlR/+HhqnZxoxXzsKqPsMThhWspRg6KAdVWOuTkqvR9VE1II1yDor2I9H/ztuOe6UXmqA== X-Received: by 2002:a62:2646:: with SMTP id m67-v6mr26830196pfm.254.1537199893007; Mon, 17 Sep 2018 08:58:13 -0700 (PDT) Received: from aiede.svl.corp.google.com ([2620:0:100e:422:4187:1d6c:d3d6:9ce6]) by smtp.gmail.com with ESMTPSA id 22-v6sm22089639pfl.126.2018.09.17.08.58.12 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 17 Sep 2018 08:58:12 -0700 (PDT) Date: Mon, 17 Sep 2018 08:58:10 -0700 From: Jonathan Nieder To: Taylor Blau Cc: John Austin , =?utf-8?B?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason , git@vger.kernel.org Subject: Re: Git for games working group Message-ID: <20180917155810.GA89942@aiede.svl.corp.google.com> References: <87bm8zlqrh.fsf@evledraar.gmail.com> <20180915164217.GB88932@syl> <20180916220548.GA154643@aiede.svl.corp.google.com> <20180917135846.GG71477@syl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180917135846.GG71477@syl> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Taylor Blau wrote: > On Sun, Sep 16, 2018 at 03:05:48PM -0700, Jonathan Nieder wrote: > > On Sun, Sep 16, 2018 at 11:17:27AM -0700, John Austin wrote: > > > Taylor Blau wrote: >>>> Right, though this still subjects the remote copy to all of the >>>> difficulty of packing large objects (though Christian's work to support >>>> other object database implementations would go a long way to help this). >>> >>> Ah, interesting -- I didn't realize this step was part of the >>> bottleneck. I presumed git didn't do much more than perhaps gzip'ing >>> binary files when it packed them up. Or do you mean the growing cost >>> of storing the objects locally as you work? Perhaps that could be >>> solved by allowing the client more control (ie. delete the oldest >>> blobs that exist on the server). >> >> John, I believe you are correct. Taylor, can you elaborate about what >> packing overhead you are referring to? > > Jonathan, you are right. I was also referring about the increased time > that Git would spend trying to find good packfile chains with larger, > non-textual objects. I haven't done any hard benchmarking work on this, > so it may be a moot point. Ah, thanks. See git-config(1): core.bigFileThreshold Files larger than this size are stored deflated, without attempting delta compression. Default is 512 MiB on all platforms. If that's failing on your machine then it would be a bug, so we'd definitely want to know. Jonathan