X-Loop: help-debbugs@HIDDEN Subject: bug#47543: =?UTF-8?Q?=E2=80=9CRepeated?= allocation of very large =?UTF-8?Q?block=E2=80=9D?= during =?UTF-8?Q?=E2=80=98guix_?= =?UTF-8?Q?pull=E2=80=99?= Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludovic.courtes@HIDDEN> Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> Resent-CC: bug-guix@HIDDEN Resent-Date: Thu, 01 Apr 2021 14:01:02 +0000 Resent-Message-ID: <handler.47543.B.161728561420677 <at> debbugs.gnu.org> Resent-Sender: help-debbugs@HIDDEN X-GNU-PR-Message: report 47543 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 47543 <at> debbugs.gnu.org X-Debbugs-Original-To: <bug-guix@HIDDEN> Received: via spool by submit <at> debbugs.gnu.org id=B.161728561420677 (code B ref -1); Thu, 01 Apr 2021 14:01:02 +0000 Received: (at submit) by debbugs.gnu.org; 1 Apr 2021 14:00:14 +0000 Received: from localhost ([127.0.0.1]:58118 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1lRxrq-0005N6-5W for submit <at> debbugs.gnu.org; Thu, 01 Apr 2021 10:00:14 -0400 Received: from lists.gnu.org ([209.51.188.17]:60764) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <ludovic.courtes@HIDDEN>) id 1lRxro-0005LB-Cf for submit <at> debbugs.gnu.org; Thu, 01 Apr 2021 10:00:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50596) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludovic.courtes@HIDDEN>) id 1lRxro-0003C5-1v for bug-guix@HIDDEN; Thu, 01 Apr 2021 10:00:12 -0400 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:51052) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludovic.courtes@HIDDEN>) id 1lRxrl-0006uM-P0 for bug-guix@HIDDEN; Thu, 01 Apr 2021 10:00:11 -0400 IronPort-HdrOrdr: A9a23:IOduCKrjp/UGHh3n+7D83ZkaV5tvL9V00zAX/kB9WHVpW+afkN2jm+le8BfyhioYVn1Io6H9BICrR3TA+ZlppbQAJLvKZniahEKEDqFHqbHjzTrpBjHk+odmuptIXqBiBLTLfCFHpOng5g3QKadF/PCm9+SSif7a3zNRS2hRGttdxiNYLireLUFsXglBAvMCZeGhz+5KvSCpd3hSTunTPAhiY8H5q9fGlI3rbHc9bnZMhWXu7Q+A07L0HwOV2R0TSVp0sNUf2FLYmA/07LjLiYDZ9jbg0QbonvFrsef6xsAGLMKBjdV9EESVti+YIKtmQKOLpz04raWK5EwxmNfB5zcsVv4DjE/5TyWIhV/G3gnt1ytrw3Lu0jaj6kfLkIjHRCknEY56j4pfdRfVgnBPgO1B X-IronPort-AV: E=Sophos;i="5.81,296,1610406000"; d="scan'208";a="501146466" Received: from 91-160-117-201.subs.proxad.net (HELO ribbon) ([91.160.117.201]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Apr 2021 16:00:06 +0200 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludovic.courtes@HIDDEN> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 12 Germinal an 229 de la =?UTF-8?Q?R=C3=A9volution?= X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Thu, 01 Apr 2021 16:00:06 +0200 Message-ID: <87v9966r6h.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=192.134.164.83; envelope-from=ludovic.courtes@HIDDEN; helo=mail2-relais-roc.national.inria.fr X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -2.3 (--) While running =E2=80=98guix pull=E2=80=99, sometime between the actual =E2= =80=98git pull=E2=80=99 (via Guile-Git) and channel authentication, I saw the dreaded libgc warning: Repeated allocation of very large block I forgot to capture the command output though, and it does not seem to be reproducible. (This is with a recent Guix, ca. 9098745b181b3022587a35afd255f7ff1d41ac86.) Running the command below from a Guix checkout, which authenticates 15+K commits, isn=E2=80=99t enough to trigger it: guix git authenticate --cache-key=3Dwhatever \ "9edb3f66fd807b096b48283debdcddccfea34bad" \ "BBB0 2DDF 2CEA F6A8 0D1D E643 A2A0 6DF2 A33A 54FA" So it might rather be =E2=80=98update-cached-checkout=E2=80=99 that trigger= s it. If you experience it, please share the command line and command output! Ludo=E2=80=99.
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludovic.courtes@HIDDEN> Subject: bug#47543: Acknowledgement (=?UTF-8?Q?=E2=80=9CRepeated?= allocation of very large =?UTF-8?Q?block=E2=80=9D?= during =?UTF-8?Q?=E2=80=98guix_?= =?UTF-8?Q?pull=E2=80=99?=) Message-ID: <handler.47543.B.161728561420677.ack <at> debbugs.gnu.org> References: <87v9966r6h.fsf@HIDDEN> X-Gnu-PR-Message: ack 47543 X-Gnu-PR-Package: guix Reply-To: 47543 <at> debbugs.gnu.org Date: Thu, 01 Apr 2021 14:01:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-guix@HIDDEN If you wish to submit further information on this problem, please send it to 47543 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 47543: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D47543 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
Received: (at control) by debbugs.gnu.org; 15 Jun 2023 21:08:20 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Jun 15 17:08:19 2023 Received: from localhost ([127.0.0.1]:48097 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q9uCZ-0005HQ-Ks for submit <at> debbugs.gnu.org; Thu, 15 Jun 2023 17:08:19 -0400 Received: from eggs.gnu.org ([209.51.188.92]:46214) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <ludo@HIDDEN>) id 1q9uCX-0005HB-SH for control <at> debbugs.gnu.org; Thu, 15 Jun 2023 17:08:18 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludo@HIDDEN>) id 1q9uCS-0001Jg-M5 for control <at> debbugs.gnu.org; Thu, 15 Jun 2023 17:08:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:Subject:From:To:Date:in-reply-to: references; bh=gEag0UKfk4wtQMuB8ZObvYJdG4ZYuQOEBU/doM6jkZY=; b=jckFDcR5SPznup +YhXZhmZNSZzs4tU0Kdgd1seD+2FOavKGPVTItDBZap0NwLnjr58XLdHgw7P53mFRJcBirG+QG5oO fQKNGv/+nIulhJhixfu2qbSCVRPD3F5EyOka1dHn41Pxt2B/1o+4tsVJ0SXgV+/bC5MwKoFueEeJh O8prmYq1UziaN0DqgXvpOEK+AeFuhDvxDvKLnwm2dymHFypIPCq4hRFHMVCfLrE88rIH2mlq/dVh2 xe56cRSlTerl1emjZC0Ii4e4ERJ8HV3hAdqhNdmVADp55mpYog3T22+KodO6wo4aMIYPspiwhCEJi DJnV7LVpgQ8QcVGCtPdg==; Received: from 91-160-117-201.subs.proxad.net ([91.160.117.201] helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludo@HIDDEN>) id 1q9uCS-0002UY-9Z for control <at> debbugs.gnu.org; Thu, 15 Jun 2023 17:08:12 -0400 Date: Thu, 15 Jun 2023 23:08:11 +0200 Message-Id: <87352sv3gk.fsf@HIDDEN> To: control <at> debbugs.gnu.org From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN> Subject: control message for bug #47543 MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) severity 47543 important quit
X-Loop: help-debbugs@HIDDEN Subject: bug#47543: "Repeated allocation of very large block" during `guix pull` References: <87v9966r6h.fsf@HIDDEN> In-Reply-To: <87v9966r6h.fsf@HIDDEN> Resent-From: Rostislav Svoboda <rostislav.svoboda@HIDDEN> Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> Resent-CC: bug-guix@HIDDEN Resent-Date: Wed, 20 Sep 2023 07:25:02 +0000 Resent-Message-ID: <handler.47543.B47543.169519467211102 <at> debbugs.gnu.org> Resent-Sender: help-debbugs@HIDDEN X-GNU-PR-Message: followup 47543 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 47543 <at> debbugs.gnu.org Received: via spool by 47543-submit <at> debbugs.gnu.org id=B47543.169519467211102 (code B ref 47543); Wed, 20 Sep 2023 07:25:02 +0000 Received: (at 47543) by debbugs.gnu.org; 20 Sep 2023 07:24:32 +0000 Received: from localhost ([127.0.0.1]:58205 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1qirZX-0002t0-UD for submit <at> debbugs.gnu.org; Wed, 20 Sep 2023 03:24:32 -0400 Received: from mail-lf1-x12c.google.com ([2a00:1450:4864:20::12c]:45559) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <rostislav.svoboda@HIDDEN>) id 1qirZV-0002sg-Nd for 47543 <at> debbugs.gnu.org; Wed, 20 Sep 2023 03:24:30 -0400 Received: by mail-lf1-x12c.google.com with SMTP id 2adb3069b0e04-501eec0a373so10637441e87.3 for <47543 <at> debbugs.gnu.org>; Wed, 20 Sep 2023 00:24:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1695194654; x=1695799454; darn=debbugs.gnu.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=2UZ6TLpkanoUWiAnG0wGAmcAEb2OLyjx7S1V1b/fV4E=; b=c0HGDgmFDvZzXn1IkyFntWf60hyjkAubE/f5c70xVuKZ+yv4xMt/Qgi+6VAbF8ZmGs kQ1dCu//+CfMXsh9Vv+khFH76fFo0/pLcuAgQxF1UNGGTrgRTrywunAo876CXo3zG7US Wq/ui21iHK7qgUZAe/78Z4ZjpXzFWfRnfmNXzoHvc3n+HI82Btzof5TrlQd+Qz/reIps mjU3dghWkDNR2w+n+fF9i7JJUc0W0KP+321hboGz+Q7AYDsirBL841c6nCkBItYGfeGZ m/tGB0Ls84uBMeLknmeHBqbnZj3gQAPsVNuJUjVDBKlR7oh1WY5BIwFHfxp35+TFeEUX ENiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695194654; x=1695799454; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=2UZ6TLpkanoUWiAnG0wGAmcAEb2OLyjx7S1V1b/fV4E=; b=F+5cHqjntu9iqX8oSgCFYBVDu7PwkRnWwJMXh9WoVoKcgVl+Az5rFXnaxm8+uE/p/u KTorKvIWopfwRhhn1h+8s7S3NLLJ7vi2/N+KizoEq+wlH+uy/O/v5vTOLwt9oYgTKTxj wp24zBkElUNbHqr+ht65dL+ubNB2tFbHuWQ+ql2ke+Lu2MYxfG9JU4ZefCOivzwSPd3G +4AE0M/mH+fzYBKJ7WJ+3XSE2oZ+dHXZvzVimkotmuEwru/EbVp6aZWx/Zc6NjvHbzm1 044x9S6JY1SgeCdFpfbdaPcNNTDD8x1caqes5L/O/PdBnWYUPuJkCcDi13q2WazP0tj6 JyTw== X-Gm-Message-State: AOJu0YyokGFE5FUMnHypspiojOcEfj5xf4jRljlxcjm7YsWycDyGBQJX vmHBu5N6MuHdxey5GBAsnUMFWxUp3eAhtgNpe2zBkYZxEnU= X-Google-Smtp-Source: AGHT+IEy59NA/BlKCS6InkQixD8BX0JpJdVYH2s8vuLysi7KOLOsHSUR9H9/FrT++B5Yay9hgKh+kOUZXEfbsss7dBI= X-Received: by 2002:a05:6512:2005:b0:500:a08e:2fd3 with SMTP id a5-20020a056512200500b00500a08e2fd3mr1441007lfb.21.1695194653713; Wed, 20 Sep 2023 00:24:13 -0700 (PDT) MIME-Version: 1.0 From: Rostislav Svoboda <rostislav.svoboda@HIDDEN> Date: Wed, 20 Sep 2023 09:23:37 +0200 Message-ID: <CAEtmmew-fi7t9dJzN0uLwRt5zzmZsV9iS82cKw30swE=d6yn3w@HIDDEN> Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.0 (/) X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Hope it will help. Cheers Bost $ guix pull --cores=24 Updating channel 'nonguix' from Git repository at 'https://gitlab.com/nonguix/nonguix'... Updating channel 'haskell-and-clojure' from Git repository at 'file:///home/bost/dev/haskell-guix'... Updating channel 'bost' from Git repository at 'file:///home/bost/dev/guix-packages'... Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'... GC Warning: Repeated allocation of very large block (appr. size 69632): May lead to memory leak and poor performance GC Warning: Repeated allocation of very large block (appr. size 69632): May lead to memory leak and poor performance GC Warning: Repeated allocation of very large block (appr. size 69632): May lead to memory leak and poor performance Building from these channels: bost file:///home/bost/dev/guix-packages 251ce7d guix https://git.savannah.gnu.org/git/guix.git 4b3b2e6 haskell-and-clojurefile:///home/bost/dev/haskell-guix a8b30a6 nonguix https://gitlab.com/nonguix/nonguix bb184bd Computing Guix derivation for 'x86_64-linux'... \ nothing to be done $ guix describe Generation 707 Sep 20 2023 01:24:32 (current) bost 251ce7d repository URL: file:///home/bost/dev/guix-packages branch: master commit: 251ce7d9ce4dd2bbc690189b84706368a5f20823 guix 4b3b2e6 repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: 4b3b2e63007acee9e3a8c2ea728190480d092c3c haskell-and-clojure a8b30a6 repository URL: file:///home/bost/dev/haskell-guix branch: master commit: a8b30a606f91caabec3cc8dc4b1255a69836554e nonguix bb184bd repository URL: https://gitlab.com/nonguix/nonguix branch: master commit: bb184bd0a8f91beec3a00718759e96c7828853de $ guix system describe Generation 58 Sep 18 2023 14:26:00 (current) file name: /var/guix/profiles/system-58-link canonical file name: /gnu/store/l91cqriia6jrkasbqdl2k14shd1rnm3w-system label: GNU with Linux-Libre 6.4.16 bootloader: grub-efi root device: UUID: 67ce5d9c-7af1-4435-a2a9-68651ab9a281 kernel: /gnu/store/qhynq8jfskirrn7fj5965ajmrs7zfshc-linux-libre-6.4.16/bzImage channels: bost: repository URL: file:///home/bost/dev/guix-packages branch: master commit: 36e44740eefa0aa313c2bb4ab30e5d93ee3e8448 guix: repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: 273709932fa47f6ae56c96564a9415fdbff4a169 haskell-and-clojure: repository URL: file:///home/bost/dev/haskell-guix branch: master commit: a8b30a606f91caabec3cc8dc4b1255a69836554e nonguix: repository URL: https://gitlab.com/nonguix/nonguix branch: master commit: bb184bd0a8f91beec3a00718759e96c7828853de configuration file: /gnu/store/f87bpd2bs8zn09jfcjbinwgffjyjy6ng-configuration.scm $ guix home describe Generation 894 Sep 20 2023 01:25:31 (current) file name: /var/guix/profiles/per-user/bost/guix-home-894-link canonical file name: /gnu/store/y67m6gf7jvq06f0pnr06s59hz2hb3wf1-home channels: bost: repository URL: file:///home/bost/dev/guix-packages branch: master commit: 251ce7d9ce4dd2bbc690189b84706368a5f20823 guix: repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: 4b3b2e63007acee9e3a8c2ea728190480d092c3c haskell-and-clojure: repository URL: file:///home/bost/dev/haskell-guix branch: master commit: a8b30a606f91caabec3cc8dc4b1255a69836554e nonguix: repository URL: https://gitlab.com/nonguix/nonguix branch: master commit: bb184bd0a8f91beec3a00718759e96c7828853de configuration file: /gnu/store/sz4vw81k5hacngc437w57yqm8zpg8c88-configuration.scm The two channels specified by file URLs are local copies of my github repos: bost: https://github.com/Bost/guix-packages haskell-and-clojure: https://github.com/Bost/haskell-guix
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.