Received: by 2002:a25:683:0:0:0:0:0 with SMTP id 125csp2492789ybg; Fri, 5 Jun 2020 15:32:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxpw+NzfVTXiy2CQmtTUhhvI1wWFcpOwEHEEBwS2ppTbhtCtPAfu+vvShDZmRdeos3sdtx1 X-Received: by 2002:a17:906:b1c3:: with SMTP id bv3mr11114666ejb.292.1591396377933; Fri, 05 Jun 2020 15:32:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1591396377; cv=none; d=google.com; s=arc-20160816; b=UZXoERF5MGHnnH0ajcrIna/vmdLl7qEwctGnh5zBjYfOWa/ZQ/EGbbygvwEOQ2m7BT nplqV+myMWD2ulU3hULaa1JGD+7AziVYOu7fc3iCziIXcc5sOdnQwgAccVedo8Sddruy ws87UkyyIq9VoQVkn2t6FTvckFxIjmaQU7TK+2XAWYUMwrtIHc+ZA/6P7c2z+z0WbIL6 Cv1WybxPQARQLvLe6Wt74joznF441uWXOVgEvB2k+OhKROIqO1wAcJ09JfAIdDrNhBv/ oHLlLptO9HsoepiwifeXdPKB857CVsR3gGgmc5mV8KlpW3MnfZ3BuLIpWd3euuMrquBS +Seg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature:dkim-signature; bh=JQ0T9QXE+j7q+0Zzk3VcIyBO3AAdNqka5dcc5FHLBIU=; b=zvu2rOdUZhOLvCi/SxLUMqda0Ww+p12KvGc+G7D4ulvvnjy8vvMEkjycfXorSyBJ4Z okwGiy3sqQBbVBK+/id/zlJqHJCflMe8ly20XwGi6t2Co4zEUSXoomDrlsC6ZdrPIrwI s/7Uv2H5ROyMvePTgdKUVLVOFEq0waPAycjPEpmAS1oGlNkLL+3KDEzxfFB16wpvMU2m 60qFwY8sDli5C1P9Q28xok919cN5zr/UOqpsWutMyF7Pe4m4yrk1MET9JLAj4Dl61n9o dRajul1QufmLOhwM9LYfYA8RUVJo8KnfOJqzkrXQ/dGhQMMr/EcflK9QFovzIDE/y8iv Za0w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@anarazel.de header.s=fm1 header.b=IptiNzzT; dkim=pass header.i=@messagingengine.com header.s=fm3 header.b=a8TzSgmf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d2si3260744edo.223.2020.06.05.15.32.35; Fri, 05 Jun 2020 15:32:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@anarazel.de header.s=fm1 header.b=IptiNzzT; dkim=pass header.i=@messagingengine.com header.s=fm3 header.b=a8TzSgmf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728285AbgFEWas (ORCPT + 99 others); Fri, 5 Jun 2020 18:30:48 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:60427 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728157AbgFEWar (ORCPT ); Fri, 5 Jun 2020 18:30:47 -0400 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.nyi.internal (Postfix) with ESMTP id 8DEA85C01DF; Fri, 5 Jun 2020 18:30:46 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Fri, 05 Jun 2020 18:30:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anarazel.de; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm1; bh=JQ0T9QXE+j7q+0Zzk3VcIyBO3AA dNqka5dcc5FHLBIU=; b=IptiNzzTDPqny+GbPDBRgd/1jA9JZWGKkwYtx5wDGF6 n6URXZXMO+AwI9yCCdg1BAb0Fm9RP2XMt6Re0Ang4XKlX5t/OW3u74KyEhvAx1A1 hVRJ8Oct8yUFAl8ikcZrSmmdIKRDbw056NyLa3seSIlS+cx7SJzLt9orUweLN8Ut +RH/wHZtS2MdEXkrF+4R184RxIaxICyc3HtgB8ceOUeWljsbdiJycOUd5Ubqluyq ODqkYEDhuxDMjDOW86/U2TM0dXFKOkFkMmshJiHcH39Th8PHgtaPtmKEpp+XxI2k nvRre4SkyYYaD68T4XxARuy4PMEEqvVz8p2BG1VSgCQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=JQ0T9Q XE+j7q+0Zzk3VcIyBO3AAdNqka5dcc5FHLBIU=; b=a8TzSgmfGjfQh4dnwzYtGL ULR/mfNggLyqYomsibxWX7Pids+azAeMGdLg0wRt5eskYpATWNNjF8CXtnehJWzP MlPkX9QWsOpVAEAq6PIjx4QQdytD8BG/03pfn1mrO5r0XM6crbzNiistvw0+TrQ2 j+LopnkZvoTCxBeekdcdKrzGZsPoarb3BTswobgNdeAcZF1ng0q+QOuPCkZ7na5y 1ZbuIEF3/70Ahs68+E+WIb8nzyrruwRVSfy+5jlHK1nYkgpOdiLjqnUFBOjF8ZnZ 1l5etx3lWMz4WO96hdMA+S6k6FlXZ+3QJyMXDYt60H1ptqpDFan4z1/iU+G+IaLg == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrudeggedgtdejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvffukfhfgggtuggjsehttdertddttddvnecuhfhrohhmpeetnhgurhgv shcuhfhrvghunhguuceorghnughrvghssegrnhgrrhgriigvlhdruggvqeenucggtffrrg htthgvrhhnpedukefhkeelueegveetheelffffjeegleeuudelfeefuedtleffueejfffh ueffudenucfkphepieejrdduiedtrddvudejrddvhedtnecuvehluhhsthgvrhfuihiivg eptdenucfrrghrrghmpehmrghilhhfrhhomheprghnughrvghssegrnhgrrhgriigvlhdr uggv X-ME-Proxy: Received: from intern.anarazel.de (c-67-160-217-250.hsd1.ca.comcast.net [67.160.217.250]) by mail.messagingengine.com (Postfix) with ESMTPA id C202D3060F09; Fri, 5 Jun 2020 18:30:45 -0400 (EDT) Date: Fri, 5 Jun 2020 15:30:44 -0700 From: Andres Freund To: Jens Axboe Cc: io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org Subject: Re: [PATCHSET v5 0/12] Add support for async buffered reads Message-ID: <20200605223044.tnh7qsox7zg5uk53@alap3.anarazel.de> References: <20200526195123.29053-1-axboe@kernel.dk> <20200604005916.niy2mejjcsx4sv6t@alap3.anarazel.de> <6eeff14f-befc-a5cc-08da-cb77f811fbdf@kernel.dk> <20200605202028.d57nklzpeolukni7@alap3.anarazel.de> <20200605203613.ogfilu2edcsfpme4@alap3.anarazel.de> <75bfe993-008d-71ce-7637-369f130bd984@kernel.dk> <3539a454-5321-0bdc-b59c-06f60cc64b56@kernel.dk> <34aadc75-5b8a-331e-e149-45e1547b543e@kernel.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <34aadc75-5b8a-331e-e149-45e1547b543e@kernel.dk> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 2020-06-05 15:21:34 -0600, Jens Axboe wrote: > >> I can reproduce this, and I see what it is. I'll send out a patch soonish. > > > > Thinko, can you try with this on top? > > Sorry that was incomplete, please use this one! That seems to fix it! Yay. Bulk buffered reads somehow don't quite seem to be performing that well though, looking into it. Could be on the pg side too. Greetings, Andres Freund