From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) by sympa.inria.fr (Postfix) with ESMTPS id 669B17EE89 for ; Sun, 30 Oct 2016 17:49:21 +0100 (CET) Authentication-Results: mail2-smtp-roc.national.inria.fr; spf=None smtp.pra=dra-news@metastack.com; spf=Pass smtp.mailfrom=dra-news@metastack.com; spf=None smtp.helo=postmaster@outmail148110.authsmtp.com Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender authenticity information available from domain of dra-news@metastack.com) identity=pra; client-ip=62.13.148.110; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="dra-news@metastack.com"; x-sender="dra-news@metastack.com"; x-conformance=sidf_compatible Received-SPF: Pass (mail2-smtp-roc.national.inria.fr: domain of dra-news@metastack.com designates 62.13.148.110 as permitted sender) identity=mailfrom; client-ip=62.13.148.110; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="dra-news@metastack.com"; x-sender="dra-news@metastack.com"; x-conformance=sidf_compatible; x-record-type="v=spf1" Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender authenticity information available from domain of postmaster@outmail148110.authsmtp.com) identity=helo; client-ip=62.13.148.110; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="dra-news@metastack.com"; x-sender="postmaster@outmail148110.authsmtp.com"; x-conformance=sidf_compatible IronPort-PHdr: =?us-ascii?q?9a23=3AzSIpUBHI/xirQ2DJISEaoZ1GYnF86YWxBRYc798d?= =?us-ascii?q?s5kLTJ75o8qwAkXT6L1XgUPTWs2DsrQf2rCQ7P+rCDZIoc7Y9itdINoUD15NoP?= =?us-ascii?q?5VtjJjKfbNMVf8Iv/uYn5yN+V5f3ghwUuGN1NIEt31fVzYry76xzcTHhLiKVg9?= =?us-ascii?q?fbytScb6xv663OGq+pDVfx4AxH/kOeszf12KqlD7u9MVjMNON7w4yVOdqHZSeO?= =?us-ascii?q?kQyX5yLFG7kBP158P295lmpWAYsPsk84tEUL7mN/AzRLlcSTAnKHwd5cvxtBCF?= =?us-ascii?q?QxHZtVUGVWBDvhNWAgSNxRX+RZDpqmOuuvB0nS+XItbeSL0oUC++5qxoDhTvjX?= =?us-ascii?q?FUZHYC7GjLh5ko3+pgqxW7qkk6mtaMbQ=3D=3D?= X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0B1AADsIxZYh26UDT5dHQEFAQsBGAEFA?= =?us-ascii?q?QsBgmkWAQEBAQF3fQejDAEGgRuWRSiFewIagWdDEAEBAQEBAQEBAQEBEgEBAQg?= =?us-ascii?q?NCQkdMIIzBAEVAQSCEAEBAQQDIBFVAgEGAhgCAh8HAgICMBUQAgQBGohNAwEJl?= =?us-ascii?q?QWdNoxiAQEBAQEBBAEBAQEBAQEBAQEYBYEHhGuFIIRJFYJtLYIvAQSaGIYwigA?= =?us-ascii?q?KgWSEbYkpjRGEAjVxg0IjgTtyhjtBgQkBAQE?= X-IPAS-Result: =?us-ascii?q?A0B1AADsIxZYh26UDT5dHQEFAQsBGAEFAQsBgmkWAQEBAQF?= =?us-ascii?q?3fQejDAEGgRuWRSiFewIagWdDEAEBAQEBAQEBAQEBEgEBAQgNCQkdMIIzBAEVA?= =?us-ascii?q?QSCEAEBAQQDIBFVAgEGAhgCAh8HAgICMBUQAgQBGohNAwEJlQWdNoxiAQEBAQE?= =?us-ascii?q?BBAEBAQEBAQEBAQEYBYEHhGuFIIRJFYJtLYIvAQSaGIYwigAKgWSEbYkpjRGEA?= =?us-ascii?q?jVxg0IjgTtyhjtBgQkBAQE?= X-IronPort-AV: E=Sophos;i="5.31,570,1473112800"; d="scan'208";a="242920388" Received: from outmail148110.authsmtp.com ([62.13.148.110]) by mail2-smtp-roc.national.inria.fr with ESMTP; 30 Oct 2016 17:49:17 +0100 Received: from mail-c232.authsmtp.com (mail-c232.authsmtp.com [62.13.128.232]) by punt20.authsmtp.com (8.14.2/8.14.2/) with ESMTP id u9UGnGxO020521; Sun, 30 Oct 2016 16:49:16 GMT Received: from romulus.metastack.com (114.212-105-213.static.virginmediabusiness.co.uk [213.105.212.114]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id u9UGnFea074456 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 30 Oct 2016 16:49:15 GMT Received: from remus.metastack.local (remus.metastack.com [172.16.0.1]) by romulus.metastack.com (8.14.2/8.14.2) with ESMTP id u9UGnEP5011527; Sun, 30 Oct 2016 16:49:14 GMT Received: from Remus.metastack.local ([fe80::547c:3c42:e1da:eda2]) by Remus.metastack.local ([fe80::547c:3c42:e1da:eda2%10]) with mapi id 14.03.0319.002; Sun, 30 Oct 2016 16:49:14 +0000 From: David Allsopp To: Berke Durak , caml-list Thread-Topic: [Caml-list] Why is some code compiled with 4.04.0 or 4.05.0 running 2.3 times slower than the same code compiled with 4.03.0? Thread-Index: AQHSMnjp9OfQAFyTMky1eRnRJWWacaDBMdEA Date: Sun, 30 Oct 2016 16:49:13 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.16.0.29] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Organization: MetaStack Solutions Ltd. 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QmVya2UgRHVyYWsgd3JvdGU6DQo+IEkgY29tcGlsZWQgYW5kIHJhbiBhIHNp bXBsZSBtYXRyaXgtbXVsdGlwbGljYXRpb24tc3R5bGUgYmVuY2htYXJrDQo+ IHByb2dyYW0gd3JpdHRlbiBpbiBpbXBlcmF0aXZlIHN0eWxlIHdpdGggQmln YXJyYXlzIChzZWUgYmVsb3cpIA0KPiB1c2luZyB2ZXJzaW9ucyA0LjAxLjAs IDQuMDMuMCwgNC4wMy4wK2ZsYW1iZGEsIDQuMDQuMCt0cnVuaytmbGFtYmRh DQo+ICh3aXRoIC12ZXJzaW9uIDQuMDQuMCtkZXY5LTIwMTUtMDktMDUpLCA0 LjA0LjArYmV0YTIrZmxhbWJkYSANCj4gKDQuMDQuMCtiZXRhMikgYW5kIDQu MDUrdHJ1bmsrZmxhbWJkYSAoNC4wNS4wK2RldjAtMjAxNi0wOC0wMSkuDQo+ DQo+IEV4ZWN1dGlvbiB0aW1lIGluY3JlYXNlZCBieSBhIGZhY3RvciBvZiAy LjMgZnJvbSA0LjAzK2ZsYW1iZGEgdG8NCj4gNC4wNCt0cnVuaytmbGFtYmRh LsKgIEkgdHJpZWQgYSBmZXcgb2YgdGhlIG5ld2VyIG9wdGltaXphdGlvbiAN Cj4gc3dpdGNoZXMgKC1yb3VuZHMgWCwgLXVuYm94ZWQtdHlwZXMsIC11bmJv eC1jbG9zdXJlcywgZXRjLikgYnV0DQo+IHRoYXQgZGlkbid0IG1ha2UgYSBz aWduaWZpY2FudCBkaWZmZXJlbmNlLsKgDQo+DQo+IEV4ZWN1dGlvbiB0aW1l cywgcmVwZWF0YWJsZSB3aXRoaW4gfjUlOg0KPg0KPiA0LjAxLjAgwqAgwqAg wqAgwqAgwqAgwqAgwqAgwqA1LjQ1cw0KPiA0LjAzLjAgwqAgwqAgwqAgwqAg wqAgwqAgwqAgwqA0LjI4cw0KPiA0LjAzLjArZmxhbWJkYSDCoCDCoCDCoCDC oDQuNDRzDQo+IDQuMDQuMCt0cnVuaytmbGFtYmRhIMKgMTAuNDVzDQo+IDQu MDQuMCtiZXRhMitmbGFtYmRhIDEwLjcycw0KPiA0LjA1LjArdHJ1bmsrZmxh bWJkYSDCoDEwLjM2cw0KDQpOb3RlIHRoYXQgdGhpcyBpcyBzcGVjaWZpY2Fs bHkgYW4gZmxhbWJkYSBwcm9ibGVtIC0gbmVpdGhlciA0LjA0IG5vciB0cnVu ayBleGhpYml0IHRoZSBzbG93ZG93biB3aXRoIGZsYW1iZGEgZGlzYWJsZWQu DQoNCkkndmUgYmlzZWN0ZWQgYW5kIGlkZW50aWZpZWQgY29tbWl0IGY3ZGNi IGFzIHRoZSBwcm9ibGVtIChpdCB3YXMgYWRkZWQgdG8gdHJ1bmsgYWZ0ZXIg NC4wMyB3YXMgYnJhbmNoZWQpLiBUaGUgc3BlY2lmaWMgaXNzdWUgaXMgdGhl IGNoYW5nZSBpbiBodHRwczovL2dpdGh1Yi5jb20vb2NhbWwvb2NhbWwvYmxv Yi90cnVuay9ieXRlY29tcC9zaW1wbGlmLm1sI0w0NzMgZGlzYWJsaW5nIGNv bnZlcnNpb24gb2YgcmVmcyB0byBtdXRhYmxlIHZhcmlhYmxlcyB3aGVuIGZs YW1iZGEgaXMgZW5hYmxlZC4gSWYgeW91IHJlbW92ZSB0aGUgYCYmIENvbmZp Zy5mbGFtYmRhID0gZmFsc2VgIGFuZCByZWJ1aWxkIG9jYW1sb3B0LCB5b3Ug c2hvdWxkIGZpbmQgeW91ciBiZW5jaG1hcmsgc3BlZWQgcmVzdG9yZWQuIGZs YW1iZGEgaXMgc3VwcG9zZWQgdG8gYmUgcGVyZm9ybWluZyB0aGF0IG9wdGlt aXNhdGlvbiBpdHNlbGYsIHNvIHNvbWV0aGluZyBpcyBjbGVhcmx5ICh2ZXJ5 KSB3cm9uZyENCg0KQ291bGQgeW91IG9wZW4gYSBNYW50aXMgUFIgZm9yIHRo aXMsIHBsZWFzZT8NCg0KDQpEYXZpZA0K