Received: by 2002:ab2:7a55:0:b0:1f4:4a7d:290d with SMTP id u21csp564134lqp; Fri, 5 Apr 2024 02:05:38 -0700 (PDT) X-Forwarded-Encrypted: i=3; AJvYcCWQXZCFK56bKSxw+yuYTwAVKtHozmDKf3ooTfuBsNqcnsvWxRBPWat9qmL+Xzr738pHKefvfNx0zGowyjLwPLp9moWYdp1uxdrWHh2Siw== X-Google-Smtp-Source: AGHT+IFVGu/Qnd/WzM0aYd7ZBp2yvhm9Mk7DycjoQjl5/LQsLxwvoekXEuem5uk3X1wiY9gc83qV X-Received: by 2002:a05:6a00:cc6:b0:6ea:d740:62a4 with SMTP id b6-20020a056a000cc600b006ead74062a4mr963471pfv.25.1712307938287; Fri, 05 Apr 2024 02:05:38 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1712307938; cv=pass; d=google.com; s=arc-20160816; b=DdTksNB8aDOFeuBPGfMMalSunbFpMq/MpAMz16SVeKFVqcnrjmK7qykCU9OdeYwu/I vql5mLMGAwCKHYPbf0erzbeAQy51iFTTFeAQDTyXarBmHOkNSJ12JZLLDmr884JbcXlT eOEgn210W1NNKfriRXWOB3bXHUYJwYZvyAbtNm7qfpt8x8dD4A+U3JXenMrv42cPG58W /S9Qak7GUoI0qif72/wEu+E+8a+kIxxPiHmsw4qzIBAGXWT3fEWheXDZd7Eg9aYlRGeo OP/CtM+tIJqCBLyIpu0dQmRpqIOyxVJVpHT+19WKY2CcZlG907cZ+3rk4SOWk8XeC33/ PQaw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:in-reply-to:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :list-unsubscribe:list-subscribe:list-id:precedence:date:message-id :dkim-signature:dkim-signature:dkim-signature:dkim-signature; bh=uvDqRQyFPGXF7Bz9W7132BzzzPZTW1UfAhl4tRMlQFM=; fh=6nb8zHhaCHH6MdhcoL5+0NnXL1tNpM/Rm7roNyIWzKw=; b=fgSh1jqCYFniiWuJEErfj4cPjNilCmattvXSvJGzVXl5NArwegdduDPLF26flSLXvB hVUL4/BNXPhsXAGhkTUVxb/Y/rTvwLcXO/ygEfjfDHiSF3YKhi8lK6odWUyxcU+v/Na9 TNqF4Jn4fNX/i5J75S5tHXAGG/O0kzx3cm31TFx55a4p1JT4tIkZM7Xou8mfI6r4Ubh8 3Bk6tuF6D0b8OLSmWI5VJE6IFWWrGqd6ZGE5peYM215cTxG0XXiYulDqeaxFLEZRizKN 6JkCrD0mRLCfCQR5ssC5maCvhaM5VpKqZS+sgwIwUmrRTk6oi8d3fe/e3IJiyht9F3K7 FIeg==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b="y/rku7iD"; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519 header.b=j0m+EZfr; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=DC20TCWk; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; arc=pass (i=1 spf=pass spfdomain=suse.cz dkim=pass dkdomain=suse.cz dkim=pass dkdomain=suse.cz); spf=pass (google.com: domain of linux-kernel+bounces-132698-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-132698-linux.lists.archive=gmail.com@vger.kernel.org" Return-Path: Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. [2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id lo5-20020a056a003d0500b006e6f8e9ab72si1042105pfb.116.2024.04.05.02.05.38 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Apr 2024 02:05:38 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-132698-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b="y/rku7iD"; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519 header.b=j0m+EZfr; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=DC20TCWk; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; arc=pass (i=1 spf=pass spfdomain=suse.cz dkim=pass dkdomain=suse.cz dkim=pass dkdomain=suse.cz); spf=pass (google.com: domain of linux-kernel+bounces-132698-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-132698-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id EFA16283111 for ; Fri, 5 Apr 2024 09:05:37 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B6DE31465B4; Fri, 5 Apr 2024 09:05:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="y/rku7iD"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="j0m+EZfr"; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="DC20TCWk"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="gTweOrRI" Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E8A6F611E for ; Fri, 5 Apr 2024 09:05:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712307930; cv=none; b=LTeMlRYB54jBQ1woqNETTFA5Wq1t6m8K9yQLNVVeRSDbYCBUEHNlyWiyF0qoug1PAqMwUshL8LvFH73N5K0zSwEyLroh4qKpvg4yurGJ/z9WMiQCH6VNGHSQvC6s/5nGtmOavanuoC5LonErlwfuk8VzkVL/Ak44z2BVZ6cqXmY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712307930; c=relaxed/simple; bh=jRo7vyeZQWnyEFlZbA6H5YxXHllty1+wUIyL7GZlsxc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ahf8/D06rgyJ+rJAI9FuBLrWqgCSpZHheuoiTgX5fWnnPmQUt3OclppHxfctYp0X45/lJN/P25OFjcpdQk7+5ozkss7vpujT1FfkvetzrfoDc3/vVY0+zP8TR0ntiMjwJiHcZ2LK6SisZlRibxAITpi9Acj7OHX4T3p0C65vBHI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz; spf=pass smtp.mailfrom=suse.cz; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=y/rku7iD; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=j0m+EZfr; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=DC20TCWk; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=gTweOrRI; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.cz Received: from imap2.dmz-prg2.suse.org (imap2.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:98]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id DF29D21A23; Fri, 5 Apr 2024 09:05:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1712307927; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=uvDqRQyFPGXF7Bz9W7132BzzzPZTW1UfAhl4tRMlQFM=; b=y/rku7iDgyEpyLaitFN447zxRdbp2cMmF8EIdhr4voUDfaBVr7AA+jtHXITSk8LaGfUgHG mcr9huYGel4gQD55UNSe4EvQyroFnf3PKD3G///C/xdzwwSqwUE9L2hrZtdXB3tBMJtVo4 GLv0yPl+3zOMtJDYHwbqL5BkowC8huo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1712307927; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=uvDqRQyFPGXF7Bz9W7132BzzzPZTW1UfAhl4tRMlQFM=; b=j0m+EZfrDOiW2/WPnzIPgQ9CUkfKVKvs6iIaa66Ddo8GCLZ8cyz8SJ4tqSTVHJFmeS7w/2 ssx55ngTxX8BW9CQ== Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=DC20TCWk; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=gTweOrRI DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1712307926; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=uvDqRQyFPGXF7Bz9W7132BzzzPZTW1UfAhl4tRMlQFM=; b=DC20TCWk1MEZTWzXEnL7oqbq80+RJp2D63I+mf/6TiaGnydUc8EdeHMH4G2zur+s560ZWk bVsdqsNQfF7aa+zsBgNhtqVa+5r1t8fQguW189neTZ2GxGnQTe1p0u4RWQ0zNqjyXzEbPl oXPODtRm2416fq6vLMvqx75xrycp8R0= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1712307926; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=uvDqRQyFPGXF7Bz9W7132BzzzPZTW1UfAhl4tRMlQFM=; b=gTweOrRIrorxkA+XMFCvvb5T0XWuCRgsWS4hNitY2eI14XA98ycGmMfYLKWrMNJt+kDNTy SyVoGs/WQIefNhBQ== Received: from imap2.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap2.dmz-prg2.suse.org (Postfix) with ESMTPS id B935C139F1; Fri, 5 Apr 2024 09:05:26 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap2.dmz-prg2.suse.org with ESMTPSA id yJrlLNa+D2a/TwAAn2gu4w (envelope-from ); Fri, 05 Apr 2024 09:05:26 +0000 Message-ID: <9f3466c7-509f-4982-a62b-ca47f1d91664@suse.cz> Date: Fri, 5 Apr 2024 11:05:26 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] slub: fix slub segmentation To: "Christoph Lameter (Ampere)" , Ming Yang Cc: penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, zhangliang5@huawei.com, wangzhigang17@huawei.com, liushixin2@huawei.com, alex.chen@huawei.com, pengyi.pengyi@huawei.com, xiqi2@huawei.com References: <20240402031025.1097-1-yangming73@huawei.com> <56193a2c-dadb-108d-4eaf-0a923fc4912b@linux.com> Content-Language: en-US From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJkBREIBQkRadznAAoJECJPp+fMgqZkNxIQ ALZRqwdUGzqL2aeSavbum/VF/+td+nZfuH0xeWiO2w8mG0+nPd5j9ujYeHcUP1edE7uQrjOC Gs9sm8+W1xYnbClMJTsXiAV88D2btFUdU1mCXURAL9wWZ8Jsmz5ZH2V6AUszvNezsS/VIT87 AmTtj31TLDGwdxaZTSYLwAOOOtyqafOEq+gJB30RxTRE3h3G1zpO7OM9K6ysLdAlwAGYWgJJ V4JqGsQ/lyEtxxFpUCjb5Pztp7cQxhlkil0oBYHkudiG8j1U3DG8iC6rnB4yJaLphKx57NuQ PIY0Bccg+r9gIQ4XeSK2PQhdXdy3UWBr913ZQ9AI2usid3s5vabo4iBvpJNFLgUmxFnr73SJ KsRh/2OBsg1XXF/wRQGBO9vRuJUAbnaIVcmGOUogdBVS9Sun/Sy4GNA++KtFZK95U7J417/J Hub2xV6Ehc7UGW6fIvIQmzJ3zaTEfuriU1P8ayfddrAgZb25JnOW7L1zdYL8rXiezOyYZ8Fm ZyXjzWdO0RpxcUEp6GsJr11Bc4F3aae9OZtwtLL/jxc7y6pUugB00PodgnQ6CMcfR/HjXlae h2VS3zl9+tQWHu6s1R58t5BuMS2FNA58wU/IazImc/ZQA+slDBfhRDGYlExjg19UXWe/gMcl De3P1kxYPgZdGE2eZpRLIbt+rYnqQKy8UxlszsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZAUSmwUJDK5EZgAKCRAiT6fnzIKmZOJGEACOKABgo9wJXsbWhGWYO7mD 8R8mUyJHqbvaz+yTLnvRwfe/VwafFfDMx5GYVYzMY9TWpA8psFTKTUIIQmx2scYsRBUwm5VI EurRWKqENcDRjyo+ol59j0FViYysjQQeobXBDDE31t5SBg++veI6tXfpco/UiKEsDswL1WAr tEAZaruo7254TyH+gydURl2wJuzo/aZ7Y7PpqaODbYv727Dvm5eX64HCyyAH0s6sOCyGF5/p eIhrOn24oBf67KtdAN3H9JoFNUVTYJc1VJU3R1JtVdgwEdr+NEciEfYl0O19VpLE/PZxP4wX PWnhf5WjdoNI1Xec+RcJ5p/pSel0jnvBX8L2cmniYnmI883NhtGZsEWj++wyKiS4NranDFlA HdDM3b4lUth1pTtABKQ1YuTvehj7EfoWD3bv9kuGZGPrAeFNiHPdOT7DaXKeHpW9homgtBxj 8aX/UkSvEGJKUEbFL9cVa5tzyialGkSiZJNkWgeHe+jEcfRT6pJZOJidSCdzvJpbdJmm+eED w9XOLH1IIWh7RURU7G1iOfEfmImFeC3cbbS73LQEFGe1urxvIH5K/7vX+FkNcr9ujwWuPE9b 1C2o4i/yZPLXIVy387EjA6GZMqvQUFuSTs/GeBcv0NjIQi8867H3uLjz+mQy63fAitsDwLmR EP+ylKVEKb0Q2A== In-Reply-To: <56193a2c-dadb-108d-4eaf-0a923fc4912b@linux.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Level: X-Spamd-Result: default: False [-0.12 / 50.00]; SUSPICIOUS_RECIPS(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; BAYES_HAM(-0.12)[67.07%]; MIME_GOOD(-0.10)[text/plain]; XM_UA_NO_VERSION(0.01)[]; MX_GOOD(-0.01)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; ARC_NA(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCPT_COUNT_TWELVE(0.00)[16]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; FREEMAIL_CC(0.00)[kernel.org,google.com,lge.com,linux-foundation.org,linux.dev,gmail.com,kvack.org,vger.kernel.org,huawei.com]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; TAGGED_RCPT(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; DKIM_TRACE(0.00)[suse.cz:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap2.dmz-prg2.suse.org:helo,imap2.dmz-prg2.suse.org:rdns] X-Spam-Flag: NO X-Spam-Score: -0.12 X-Spamd-Bar: / X-Rspamd-Queue-Id: DF29D21A23 X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action On 4/4/24 9:12 PM, Christoph Lameter (Ampere) wrote: > On Tue, 2 Apr 2024, Ming Yang wrote: > >> The key point of above allocation flow is: the slab should be alloced >> from the partial of other node first, instead of the buddy system of >> other node directly. > > > If you use GFP_THISNODE then you will trigger a reclaim pass on the remote > node. That could generate a performance regression. Note the alternative approach I merged doesn't have this issue because it uses GFP_NOWAIT for that __GFP_THISNODE attempt. https://lore.kernel.org/all/20240330082335.29710-1-chenjun102@huawei.com/ > We already support this kind of behavior via the node_reclaim / > zone_reclaiom setting in procfs. Please use that. > > The remote buildup of the partial pages can be addressed by changing the > remote_node_defrag_ratio in the slabs. This will make slub scan remote > nodes for partial slabs before going into the page allocator. > >