Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 73F66900 for ; Mon, 27 Nov 2017 12:08:27 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-yw0-f174.google.com (mail-yw0-f174.google.com [209.85.161.174]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 04F8F4F8 for ; Mon, 27 Nov 2017 12:08:26 +0000 (UTC) Received: by mail-yw0-f174.google.com with SMTP id q37so11720939ywa.12 for ; Mon, 27 Nov 2017 04:08:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=WEePluiTB85swJq4QwQp9llu9t02sb2nl8LMnX5MF3o=; b=i5Ig1dQCZvKft16QMoc4dhe+nQhDXbjGXUiIPI31HV9A2exmlKn6t3cYEIdH4Tlg7+ wRZcuAK2abcFZrgoqH87jgacLE8ibRVZGxFAiHWFL2IHkov8XDEMFMRTZUoJijulS2qp j3EFVri8U0qCWN6qmFkuA7gcOm0F1KxYoPqW2sJKWmxNoxqi0lPdgebOGNfH/mVRgxQW m7P5t+YQ7OcGNIk2cPOAi5P/lkDvVjwo+bL5VEeh0EELJ4jxfIdLx76CY1QdSmk3grr5 z3zEflrHeCWlR1Khr7I9CmMDP8PkI2onkjh0T82c9Zdh32o7SQEdqmHEArb0blSmJw9Z jNZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=WEePluiTB85swJq4QwQp9llu9t02sb2nl8LMnX5MF3o=; b=JExi0rZWB63iU3zWw19TqzsZEOCl3aHwyvhlvuLGAwiXxFU9Hcm/qW7QWii+/sfUQe v5Ndb4MCV0oOzUGFmPxY9+szZfp7sD31B8ildEx9bfauiiSuu35sp9PfOYR5u/6YIrsI 5kgkk3Y06Z2vpGs4KTHFH6Igcmexeucxh5Ou01Vo3NgCSJ87eLPWxEQyO/GjuHCFWuxC AC5T19rOstXPys/Atb9Kk3vh2Zmze6yhvrnItXmV+WaQ+jIpYevtpXSvSpQBqFG4QCxP PdxneQjU2LoZDJlyINUWMwHHga5FkKQtGqaj+jFb+VNuEmV8Fkyleev+D6zxiZUhcH5e 2g4A== X-Gm-Message-State: AJaThX6N4GgHTS6cO1CHy7xiX5OP+BctnnipxIt2fASwo5rjJwRQgRfd kZDjwnOos4jLnohDSslAg+eIM1zxEBg8X2IpbhQ= X-Google-Smtp-Source: AGs4zMbLswlTizTAcuEe1yuYhRqly/cI+xQ4VntpfaOKNKLrQEtkqKyHHHPvW1vq187qyHhWu9T9phgi1DCGpYN14UA= X-Received: by 10.129.32.5 with SMTP id g5mr11651821ywg.257.1511784506172; Mon, 27 Nov 2017 04:08:26 -0800 (PST) MIME-Version: 1.0 Received: by 10.37.170.231 with HTTP; Mon, 27 Nov 2017 04:08:05 -0800 (PST) In-Reply-To: References: From: Marco Pontello Date: Mon, 27 Nov 2017 13:08:05 +0100 Message-ID: To: Jeff Johnson , Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary="001a1141d5f277aa36055ef5c289" X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] Block compression X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Nov 2017 12:08:27 -0000 --001a1141d5f277aa36055ef5c289 Content-Type: text/plain; charset="UTF-8" Hi Jeff! On Mon, Nov 27, 2017 at 3:11 AM, Jeff Johnson via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote: > Raw block > 998,198 bytes > > Gzip > 521,212 bytes (52% ratio) > (needs 2MB to decompress). > I don't know how you got that raw block, but it seems a bit odd. If you look at it in an hex editor, you'll notice that every odd byte is 0, and that explain the unusual high compression ratio. Bye! --001a1141d5f277aa36055ef5c289 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Jeff!


On Mon, Nov 27, 2017 at 3:11 AM, Jeff Johnson via bi= tcoin-dev <bitcoin-dev@lists.linuxfoundation.org&g= t; wrote:
=C2=A0
Raw block
998,198 bytes

Gzip
521,212 bytes (52% ratio)
(needs 2MB to decompr= ess).

I don't know how you = got that raw block, but it seems a bit odd.
If you look at it in = an hex editor, you'll notice that every odd byte is 0, and that explain= the unusual high compression ratio.

Bye!
=C2=A0
--001a1141d5f277aa36055ef5c289--