Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 7F9BD200CBF for ; Sat, 24 Jun 2017 04:51:04 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 7E34C160BF2; Sat, 24 Jun 2017 02:51:04 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 9BDD0160BE5 for ; Sat, 24 Jun 2017 04:51:03 +0200 (CEST) Received: (qmail 39013 invoked by uid 500); 24 Jun 2017 02:51:02 -0000 Mailing-List: contact issues-help@flex.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@flex.apache.org Delivered-To: mailing list issues@flex.apache.org Received: (qmail 39004 invoked by uid 99); 24 Jun 2017 02:51:02 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 24 Jun 2017 02:51:02 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id 34CBDC661B for ; Sat, 24 Jun 2017 02:51:02 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -99.211 X-Spam-Level: X-Spam-Status: No, score=-99.211 tagged_above=-999 required=6.31 tests=[KAM_ASCII_DIVIDERS=0.8, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id zSyacCAW-5jj for ; Sat, 24 Jun 2017 02:51:01 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id D27695F5B7 for ; Sat, 24 Jun 2017 02:51:00 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 4BB9FE0041 for ; Sat, 24 Jun 2017 02:51:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 0911421940 for ; Sat, 24 Jun 2017 02:51:00 +0000 (UTC) Date: Sat, 24 Jun 2017 02:51:00 +0000 (UTC) From: "Justin Mclean (JIRA)" To: issues@flex.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (FLEX-35330) [FlexJS] comparison of objects using non strict inequality is slow MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Sat, 24 Jun 2017 02:51:04 -0000 [ https://issues.apache.org/jira/browse/FLEX-35330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Justin Mclean updated FLEX-35330: --------------------------------- Description: Code use to test: {code} {code} Output of 5 consecutive tests: Uninitialised != : 18 Uninitialised !== : 18 Null initialised != : 16 Null initialised !== : 13 Uninitialised != : 20 Uninitialised !== : 18 Null initialised != : 17 Null initialised !== : 14 Uninitialised != : 18 Uninitialised !== : 19 Null initialised != : 16 Null initialised !== : 14 Uninitialised != : 18 Uninitialised !== : 18 Null initialised != : 16 Null initialised !== : 14 Uninitialised != : 19 Uninitialised !== : 18 Null initialised != : 17 Null initialised !== : 14 Smaller numbers are faster. Run on Chrome 55 on OSX. You can see about a 35% performance increase. Note there is also a small performance increase in use non strict inequality and assigning to null. was: Code use to test: {code} {code} Output of 5 consecutive tests: Uninitialised != : 18 Language.js:354 Uninitialised !== : 18 Language.js:354 Null initialised != : 16 Language.js:354 Null initialised !== : 13 Uninitialised != : 20 Language.js:354 Uninitialised !== : 18 Language.js:354 Null initialised != : 17 Language.js:354 Null initialised !== : 14 Uninitialised != : 18 Language.js:354 Uninitialised !== : 19 Language.js:354 Null initialised != : 16 Language.js:354 Null initialised !== : 14 Uninitialised != : 18 Language.js:354 Uninitialised !== : 18 Language.js:354 Null initialised != : 16 Language.js:354 Null initialised !== : 14 Uninitialised != : 19 Language.js:354 Uninitialised !== : 18 Language.js:354 Null initialised != : 17 Language.js:354 Null initialised !== : 14 Smaller numbers are faster. Run on Chrome 55 on OSX. You can see about a 35% performance increase. Note there is also a small performance increase in use non strict inequality and assigning to null. > [FlexJS] comparison of objects using non strict inequality is slow > ------------------------------------------------------------------ > > Key: FLEX-35330 > URL: https://issues.apache.org/jira/browse/FLEX-35330 > Project: Apache Flex > Issue Type: Bug > Affects Versions: Apache FlexJS 0.7.0 > Reporter: Justin Mclean > > Code use to test: > {code} > > xmlns:js="library://ns.apache.org/flexjs/basic" applicationComplete="init()"> > > > > protected function init():void > { > var start:Date; > var end:Date; > var took:Number; > var obj1:Object; > var obj2:Object; > var obj3:Object = null; > var obj4:Object = null; > var i:int; > var j:int; > j = 0; > start = new Date(); > for (i = 0; i < 1e7; i++) { > if (obj1 != null) { > j++; > } > } > end = new Date(); > took = end.getTime() - start.getTime(); > trace("Uninitialised != : " + took); > j = 0; > start = new Date(); > for (i = 0; i < 1e7; i++) { > if (obj2 !== null) { > j++; > } > } > end = new Date(); > took = end.getTime() - start.getTime(); > trace("Uninitialised !== : " + took); > j = 0; > start = new Date(); > for (i = 0; i < 1e7; i++) { > if (obj3 != null) { > j++; > } > } > end = new Date(); > took = end.getTime() - start.getTime(); > trace("Null initialised != : " + took); > j = 0; > start = new Date(); > for (i = 0; i < 1e7; i++) { > if (obj4 !== null) { > j++; > } > } > end = new Date(); > took = end.getTime() - start.getTime(); > trace("Null initialised !== : " + took); > } > ]]> > > > > > > > {code} > Output of 5 consecutive tests: > Uninitialised != : 18 > Uninitialised !== : 18 > Null initialised != : 16 > Null initialised !== : 13 > Uninitialised != : 20 > Uninitialised !== : 18 > Null initialised != : 17 > Null initialised !== : 14 > Uninitialised != : 18 > Uninitialised !== : 19 > Null initialised != : 16 > Null initialised !== : 14 > Uninitialised != : 18 > Uninitialised !== : 18 > Null initialised != : 16 > Null initialised !== : 14 > Uninitialised != : 19 > Uninitialised !== : 18 > Null initialised != : 17 > Null initialised !== : 14 > Smaller numbers are faster. Run on Chrome 55 on OSX. > You can see about a 35% performance increase. > Note there is also a small performance increase in use non strict inequality and assigning to null. -- This message was sent by Atlassian JIRA (v6.4.14#64029)