From owner-freebsd-java@freebsd.org Mon Jul 20 14:07:53 2020 Return-Path: Delivered-To: freebsd-java@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 680553602BA for ; Mon, 20 Jul 2020 14:07:53 +0000 (UTC) (envelope-from glewis@eyesbeyond.com) Received: from resqmta-po-04v.sys.comcast.net (resqmta-po-04v.sys.comcast.net [IPv6:2001:558:fe16:19:96:114:154:163]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4B9Npw1TTcz45MK for ; Mon, 20 Jul 2020 14:07:51 +0000 (UTC) (envelope-from glewis@eyesbeyond.com) Received: from resomta-po-06v.sys.comcast.net ([96.114.154.230]) by resqmta-po-04v.sys.comcast.net with ESMTP id xW34jOhhW9TkvxWSLjdZDT; Mon, 20 Jul 2020 14:07:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcastmailservice.net; s=20180828_2048; t=1595254069; bh=N5o8xUn5CrqTI2UZRHjGay1oT5xc/rgotasOmmU88jg=; h=Received:Received:Received:Subject:To:From:Message-ID:Date: MIME-Version:Content-Type; b=C0fj7S6g7mfaJt5ixqaK6Snk4aOEKA2weqtAegNFDTdkK7I3KW0Cnfwms+NVxogW3 MZAZxlIH/B1rRIjVToOOBt1cTuEvrlId6UxkZ9AHwW9W3WmYT2bSBEVK+jrpXGlsIS 9A2lPpYCvQgkGG+Su84KXiFcLcAUQMBnFMTS48D9S7r2znJSQPSgC9TpqgV3j0l9uK a6cXU7uscsw0thnVn+PHieuVDiFOx6Sx1daNZuwGn4CBL05tWQ07fhMkwM1tysTOXW h/4QZ+m8zfC9aiBD5eXSCZ6LE9mzwHtjLPbfaEwn/HDGujy9u8L0s4upHigqMTg49V hYIwyLYsSHOQw== Received: from misty.eyesbeyond.com ([24.16.127.181]) by resomta-po-06v.sys.comcast.net with ESMTPA id xWSJjSUEZ3wWoxWSKjR1oG; Mon, 20 Jul 2020 14:07:49 +0000 X-Xfinity-VAAS: gggruggvucftvghtrhhoucdtuddrgeduiedrgeeggdegjecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucevohhmtggrshhtqdftvghsihdpqfgfvfdppffquffrtefokffrnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefuvfhfhffkffgfgggjtgesrgdtreertdefjeenucfhrhhomhepifhrvghgucfnvgifihhsuceoghhlvgifihhssegvhigvshgsvgihohhnugdrtghomheqnecuggftrfgrthhtvghrnhepfeefvedtudehkeelfeegieehuddtgfehtdekffdttdefkeeufefgffevvdefgeeinecuffhomhgrihhnpehgihhthhhusgdrtghomhdpfhhrvggvsghsugdrohhrghdpphgvthhithgvtghlohhuugdrohhrghenucfkphepvdegrdduiedruddvjedrudekudenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhephhgvlhhopehmihhsthihrdgvhigvshgsvgihohhnugdrtghomhdpihhnvghtpedvgedrudeirdduvdejrddukedupdhmrghilhhfrhhomhepghhlvgifihhssegvhigvshgsvgihohhnugdrtghomhdprhgtphhtthhopegrrhihvghhrdhfrhhivggumhgrnhesghhmrghilhdrtghomhdprhgtphhtthhopehjohhntgestghhvghnrdhorhhgrdhniidprhgtphhtthhopehfrhgvvggsshguqdhjrghvrgesfhhrvggvsghsugdrohhrgh X-Xfinity-VMeta: sc=-100.00;st=legit Received: from misty.eyesbeyond.com (localhost.eyesbeyond.com [127.0.0.1]) by misty.eyesbeyond.com (8.15.2/8.15.2) with ESMTP id 06KE7lfH068535; Mon, 20 Jul 2020 07:07:47 -0700 (PDT) (envelope-from glewis@eyesbeyond.com) X-Authentication-Warning: misty.eyesbeyond.com: Host localhost.eyesbeyond.com [127.0.0.1] claimed to be misty.eyesbeyond.com Subject: Re: OT: support for multicore javac? To: Aryeh Friedman Cc: Jonathan Chen , freebsd-java@freebsd.org References: <20200719052757.GA45160@misty.eyesbeyond.com> From: Greg Lewis Autocrypt: addr=glewis@eyesbeyond.com; prefer-encrypt=mutual; keydata= mQGiBDyFNecRBACKn+4b36n2/e55yTfpLXS9a57gQNgx0WXBfbK9LMLf2D8otD+0z1DW2ecl AOwJVtPftjvYP0HKFVC8Pes9Wvp6Z0sIEPpdkL2NPlUuxXUyh1b92u7nBpt7Uwsom88fnn+B OPrvvPL8Arg3JBen+Jd8o9yRoABCYku8vQF6CEUDcwCgmHJd9hZ/kRb1rLdSLssB4VMQ3zED /0/SVm+6XV+2ObXn9FKQpCC6sMSq+PCoR9NzAVRInjTtkpyR0fjJZr69IN2E2MWPonv38Xg1 tWJnR3fKUOnNqwiVHBQKKrKa9lGWsZQpTrR+ihtJ9hC626dCq9JDb1Ls7TXn9ha+d0WNuqiw ugto/myHm/GVlCANhGzUuDNUMo27A/46YEAMuhSQWOxgSZ/Z5g0ybgpswVePrxvD4sX2/AVf KClOYpPiNJe+S7YTJmfIPkpP2P7v+87BaN/uWgaFmxlhpUOIuat44w52EwwGB+K24cGgq52X ncZsYTYHSrLitkRtt35tVdnn1v3gmDi83M8W/YunflpeJAgJC0QzxKuar7QiR3JlZyBMZXdp cyA8Z2xld2lzQGV5ZXNiZXlvbmQuY29tPohXBBMRAgAXBQI8hTXoBQsHCgMEAxUDAgMWAgEC F4AACgkQ3uqZIxu22eCXswCeN0vOYtjnUXXznfUZtq/A/a6rf3EAoJE+kpmyp/e142F9s1Jo ndlUZjNFuQINBDyFNqMQCACa5C6Q8Vp5+TMTsNMiBIMhzm9GZQcOzTVsanfpHt/kYSZfA20J n4x/4fnhBLO42HVBono2r+Jh3fksDTf8jsCBQXBJfVwRz+d82PGpLbsIBpvqci31LJv1YAAp QoMzBkKMcE2/j0IA/JVVvVpNQInJRy/WAZIw0devZuRalricg3j6uoPeGJ8cJfWP/ZcySZhj w0JVNjnbOo7iwJuH6iEAx9i1bbJXYjPPieCmmnR9RuaUZXoNW9MLUyLrVQIOSE75NkWUTepd 4aU/kZHRJul1CY+IjQmmKepmzjeBx3bG2JQEzscAyhAOnIWKsO7IMpSAxYmu0m0DBZrhx/gu 6H9/AAURB/92qkduXjy275EQA+uOT01ZoZWqLW+/Svgslejx1v1obHDADMpcOHCoejr0TqXj 9F36GxqwgkTu8Y1sYr656tOD9beOi33QyqtqmVce5LnhOM4zLNZJIbtLrKmYN/licrfFATg1 9Ni8LYbGmGi2QT5CYHOZ5+38yjeilViW/c44GqJCgJgHfjytdzPERQ9qbdsUHDXCnleMDSSp hFxRvE0TkAr1z6DpHZz+NP3oScNkOkxEI1mIAocUsSO0fLroGJUcq+C2KNYPSTG2VZXwoAo3 o6FSlJKwK/neOwIie00BEBUQ04o5XRFBUN8mDKR4r7d542tR0iMBYUBZxU4TDlNCiEYEGBEC AAYFAjyFNqMACgkQ3uqZIxu22eAdvgCffuZlTysTdIYICVMkItXUnFENdXIAmwUFWyHGKyfU bJx1PdQLBwlUAcnl Message-ID: <2a86e22d-f07b-7891-5abb-6eb9f686d0d8@eyesbeyond.com> Date: Mon, 20 Jul 2020 07:07:47 -0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-AU X-Rspamd-Queue-Id: 4B9Npw1TTcz45MK X-Spamd-Bar: + Authentication-Results: mx1.freebsd.org; dkim=pass header.d=comcastmailservice.net header.s=20180828_2048 header.b=C0fj7S6g; dmarc=none; spf=none (mx1.freebsd.org: domain of glewis@eyesbeyond.com has no SPF policy when checking 2001:558:fe16:19:96:114:154:163) smtp.mailfrom=glewis@eyesbeyond.com X-Spamd-Result: default: False [1.16 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; HAS_XAW(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; DKIM_TRACE(0.00)[comcastmailservice.net:+]; NEURAL_HAM_SHORT(-0.88)[-0.878]; HFILTER_HELO_5(3.00)[resqmta-po-04v.sys.comcast.net]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:7922, ipnet:2001:558::/29, country:US]; RCVD_TLS_LAST(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; RECEIVED_SPAMHAUS_PBL(0.00)[24.16.127.181:received]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.77)[-0.771]; R_DKIM_ALLOW(-0.20)[comcastmailservice.net:s=20180828_2048]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; NEURAL_HAM_LONG(-0.89)[-0.890]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; DMARC_NA(0.00)[eyesbeyond.com]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2001:558:fe16:19:96:114:154:163:from]; R_SPF_NA(0.00)[no SPF record] Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-java@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Porting Java to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Jul 2020 14:07:53 -0000 On 2020-07-18 22:51, Aryeh Friedman wrote: > > > On Sun, Jul 19, 2020 at 1:28 AM Greg Lewis > wrote: > > On Sat, Jul 18, 2020 at 12:50:36PM +1200, Jonathan Chen wrote: > > On Sat, 18 Jul 2020 at 12:31, Aryeh Friedman > > wrote: > > >> I'm building eclipse, and invocations to javac seem to spread > across > > >> multiple cores when building with multiple threads using > openjdk11; at > > >> least that's what "top -H" tells me. I don't see what smart-javac > > >> brings to the table. > > > > > > I don't use eclipse or any IDE and many people other users > don't also.   All this is done by eclipse not the command line > tools and people who work with them need good support for them > (see the README in sjavac...  https://github.com/weetmuts/sjavac > ... as to the reasons for not using an IDE see > https://docs.freebsd.org/cgi/getmsg.cgi?fetch=31816+0+current/freebsd-questions > > > > > > > My statement should be re-phrased as: When I'm building the eclipse > > port from the command line, with maven, each javac invocation > spreads > > the work over multiple cores. You can easily view this with "top > -H". > > FWIW, sjavac has been used by default since JDK 9, so yes, you'd > expect to > see multiple cores being used with openjdk11.  The sjavac Github > reference > above is a backport to openjdk8. > > > Does that mind if I use 9+ I can give the -j option and it will work > as the sjavac docs say it will?.... the main reason why I decided no > to use the github version even though I use openjdk 8 by default is it > had no way to pass options down to the wrapped javac such as (which is > the default I use in almost all my projects with the most important > one being -Werror): > > -Xprefer:source -implicit:none -Xlint -Xdiags:verbose -Werror  > > -- > Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org IIRC you don't have to pass any options.  It's just the default with newer versions of OpenJDK. -- Greg