From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90CE4C433DF for ; Mon, 10 Aug 2020 20:36:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 576DD20748 for ; Mon, 10 Aug 2020 20:36:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="lG9BDioB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726707AbgHJUgs (ORCPT ); Mon, 10 Aug 2020 16:36:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55306 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726469AbgHJUgq (ORCPT ); Mon, 10 Aug 2020 16:36:46 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9FD3EC061756 for ; Mon, 10 Aug 2020 13:36:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=5/YX7mbPG9aXUarjwzHhusSBv2gDsz45AkVWwrnituE=; b=lG9BDioB5fkj9M/z8owgD9Qrho FWBwsWB5kiD1N0Z9dsBHMW3J9def5BwwIVXlTnsgQaqKuj3ZHLiKQ1MpGuky5V1n1jUHVeNs3EgfS /D2SJYiMPDRiRjlzJakGkP6sj5H99jacfRWZ7LrAfJFriB6U9vR1P2T7mQjE03s/KT5zs7vkGk3Uw DmXSY87e66gjSHQBsBmJgbsrh5mAjf1lEZOORN4VnxYGQ5NTzdnxT/PDSdkdoCkpihqb2hPYCZi1F dcTqWSxrbrSB/bzG5fuYTRwR3AerDD29bm+e9uqNhSGIuBtcJX0sJNP6yixf/LFrMqbQbXPusAc9S 5NsZ5iOA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=worktop.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1k5EX2-0007kf-J7; Mon, 10 Aug 2020 20:36:33 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 3B71A980D39; Mon, 10 Aug 2020 22:36:32 +0200 (CEST) Date: Mon, 10 Aug 2020 22:36:32 +0200 From: Peter Zijlstra To: Andi Kleen Cc: Alexander Shishkin , Arnaldo Carvalho de Melo , Ingo Molnar , linux-kernel@vger.kernel.org, Jiri Olsa , alexey.budankov@linux.intel.com, adrian.hunter@intel.com Subject: Re: [PATCH 1/2] perf: Add closing sibling events' file descriptors Message-ID: <20200810203632.GF3982@worktop.programming.kicks-ass.net> References: <20200708151635.81239-1-alexander.shishkin@linux.intel.com> <20200708151635.81239-2-alexander.shishkin@linux.intel.com> <20200806083530.GV2674@hirez.programming.kicks-ass.net> <20200806153205.GA1448395@tassilo.jf.intel.com> <875z9q1u3g.fsf@ashishki-desk.ger.corp.intel.com> <20200810144518.GB1448395@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200810144518.GB1448395@tassilo.jf.intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 10, 2020 at 07:45:18AM -0700, Andi Kleen wrote: > Unfortunately we're kind of stuck with the old NFILE=1024 default > even though it makes little sense on modern servers. Why can't that be changed? It seems to me all of userspace changes all the time; heck that system-doofus thing flushed 20+ years of sysadmin experience down the drain, just cause. Why can't we up a file limit?