From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.bugs Subject: bug#44210: 28.0.50; project.el failed to work after customizing find-program to fd Date: Mon, 18 Jan 2021 05:09:12 +0200 Message-ID: <42003a7c-4d30-ed38-0916-cacb8a2bdfa9@yandex.ru> References: <5FB48AB0-62C1-48BB-A196-A72DFACE2CA0@kuaishou.com> <7AE961A3-205F-4CC4-9634-2D981FF470CC@kuaishou.com> <636aabc5-b636-bc17-9d76-4aff28f4f60a@yandex.ru> <87ft2zgi5k.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17840"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 Cc: "44210@debbugs.gnu.org" <44210@debbugs.gnu.org>, Zhiwei Chen To: Zhiwei Chen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jan 18 04:10:10 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1l1Kvi-0004YR-En for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sun, 17 Jan 2021 19:09:14 -0800 (PST) In-Reply-To: <87ft2zgi5k.fsf@gmail.com> Content-Language: en-US X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:198070 Archived-At: Hi! You didn't address my complaint about the ignored IGNORES argument. I was going to explain that, but that email got sidetracked, sorry. In any case, I can't reproduce your results even with the latest fd. I don't have an LLVM checkout, though, just some other projects like Linux kernel and gecko-dev. And 'find' is consistently 2x as fast here. In any case, I can believe that fd is going to be faster on some systems. To make it an "official" option, someone will need to write a version of project--files-in-directory that uses fd but honors the IGNORES argument, as well as FILES. Preferably with some tests. Then we can make the program used switchable. On 18.01.2021 03:15, Zhiwei Chen wrote: > > I think I replied to the wrong thread, so forwarded it again. > >> I benchmark it again on linux, where find is of 4.7.0 version and fd is of 8.2.1 version. >> >> Make sure the page cache is cleared before each benchmark. >> >>> sudo sysctl -w vm.drop_caches=3 >> >>> cd llvm-project >> >>> sudo sysctl -w vm.drop_caches=3 >>> time fd > /tmp/fd_output >> 1.04s user 4.11s system 522% cpu 0.987 total >> >>> sudo sysctl -w vm.drop_caches=3 >>> time find > /tmp/find_output >> 0.06s user 0.20s system 7% cpu 3.354 total >> >> Since ‘fd’ is a multi-threaded program, the CPU percent is > 100%. >