From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Robert Pluim Newsgroups: gmane.emacs.devel Subject: Re: Surprisingly high use of file descriptors Date: Thu, 05 May 2022 09:13:27 +0200 Message-ID: <87r1585u5k.fsf@gmail.com> References: <874k25726k.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="452"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu May 05 09:18:39 2022 Return-path: Envelope-to: ged-emacs-devel@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 1nmVl1-000AUh-Dz for ged-emacs-devel@m.gmane-mx.org; Thu, 05 May 2022 09:18:39 +0200 Original-Received: from localhost ([::1]:44356 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nmVl0-0001VR-AQ for ged-emacs-devel@m.gmane-mx.org; Thu, 05 May 2022 03:18:38 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39908) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nmVg5-0007KV-AW for emacs-devel@gnu.org; Thu, 05 May 2022 03:13:33 -0400 Original-Received: from mail-wr1-x431.google.com ([2a00:1450:4864:20::431]:39786) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nmVg2-0000M8-LU for emacs-devel@gnu.org; Thu, 05 May 2022 03:13:32 -0400 Original-Received: by mail-wr1-x431.google.com with SMTP id d5so4809120wrb.6 for ; Thu, 05 May 2022 00:13:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:references:date:in-reply-to:message-id :mime-version:content-transfer-encoding; bh=dNRSmBUZdj/X8P9URT/f+qE3AflVbH1ROb0YLr7DxKw=; b=mVezUVEiYvSE6wIgBb2T83tX95nMuHeQPQEeVojHQMBXQh1DUuKZTrOU60pHUJo/df FiZJPL94P3roKR2cL9ejzETJ57JkPxPmenfbMajLpixvvAIQvXkQmP7GpBmixNYPP/+B b0YMqTW7lssyAXQ81GS6MB35TyIlaIoXH/aZaqMedYF4XX5UCUv6EPoJWQFdDZL7XC3I 4rw14Jdc0k0j+l9LcxBs0iU3lHw7cF3+3kZukZZ9lx3gAp8zC1Z07dlyERFfSacZGGNC AQ2ISsi0VBdWsR/vgKs/tcf+i7SjPSqK9x4AxmSeu3soQugovEarrf7ilbjaCWmStzUN oLbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:mime-version:content-transfer-encoding; bh=dNRSmBUZdj/X8P9URT/f+qE3AflVbH1ROb0YLr7DxKw=; b=O3mc8mg0cRty0zalfcsNSd3Ux5lkJ2GQw/wBKXOjM7SdDRljgJIVrk6tmmBeHD+CdT nAo7fn3wo+pDC56VIQ3EOBIb4FCiNFSqTj0QddzMzobKpLxnhC+VjdOep+PwpRPpLmh/ oXVygC7cOfWm2x3ArD0t4Kd1ZBM7kaFWQ04Rg0QJSM25vNpRrGdR2GThBaedIOBXbcCW Q1DiKPfNROYIVkeUX/qBZXxSOn+jLA080H2gOo7R1aA5770n6bK6sXoBSCkJYXy590yr SHTg7Syg9TFt59/X90IA1Z24xnUQJrvYARz3XBzzrHSliqc8sPtfEiQnjA9Z30heyUY/ cGxw== X-Gm-Message-State: AOAM533lD8mmS02uXU2pK+Tv0/7TASHoRfU5qztGHq7ZoxZ89ZKj55qY pO7fG7UldGFz+GDKg0gSojBC99/vg5tG0w== X-Google-Smtp-Source: ABdhPJz3RgXltuk4C0jpp1ufZItaVUOUjtt0pJ6UaTh2hhcVoMgu2TZ4Ni+oUutiHKd+BFEl83ry3w== X-Received: by 2002:a5d:50c4:0:b0:20c:547d:1b4e with SMTP id f4-20020a5d50c4000000b0020c547d1b4emr18228864wrt.160.1651734808652; Thu, 05 May 2022 00:13:28 -0700 (PDT) Original-Received: from rltb ([2a01:e0a:3f3:fb50:7623:b433:37be:1f20]) by smtp.gmail.com with ESMTPSA id q1-20020adff501000000b0020c5253d8cdsm526229wro.25.2022.05.05.00.13.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 May 2022 00:13:28 -0700 (PDT) In-Reply-To: (Stefan Monnier's message of "Wed, 04 May 2022 22:11:59 -0400") Received-SPF: pass client-ip=2a00:1450:4864:20::431; envelope-from=rpluim@gmail.com; helo=mail-wr1-x431.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:289228 Archived-At: >>>>> On Wed, 04 May 2022 22:11:59 -0400, Stefan Monnier said: Stefan> Robert Pluim [2022-05-04 17:22:27] wrote: >> But for those people who insist on using LSP with large codebases, >> Emacs's use of 'select' is somewhat limiting. Stefan> [ Thanks for working on this, I'll let other comment on the pat= ch, I'm Stefan> just curious here: ] Stefan> Why would ``lsp-mode` or `eglot` consume anywhere near 1024 fil= e descriptors? Stefan> Are they launching a separate LSP server process per buffer? They use filenotify.el to watch for the changes to all the files in their project, which on some platforms consumes a file descriptor per file (at least macOS, and anything kqueue based like FreeBSD). On other platforms it uses one per directory, and I=CA=BCm sure people have codebases with >1024 directories. Robert --=20