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[23.128.96.37]) by mx.google.com with ESMTPS id bx37-20020a056a02052500b005656cec81f5si902931pgb.268.2023.09.21.00.04.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Sep 2023 00:04:48 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20210309 header.b=HxRdz76X; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 7926A826DBE3; Wed, 20 Sep 2023 18:16:53 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229763AbjIUBQz (ORCPT + 99 others); Wed, 20 Sep 2023 21:16:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229473AbjIUBQy (ORCPT ); Wed, 20 Sep 2023 21:16:54 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DFF6A9 for ; Wed, 20 Sep 2023 18:16:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=WYAUtjcIJorpbkcMTw3CByHZFRQNnTETF7Qv9aBMs8E=; b=HxRdz76XxGcUyQf0jHY8ekLAav OyJJEozG7slD/4K2lLC15xipsuhay6GsoPOuVBD4/VcrarEvCUVIYW+CGMjAvu/Uup03gxg/rR43E nJSMIt5i9qj71VLlWT0VGwsk+8zgFji8nB8vNDo+yZ7qhbA315ElOVoMNMyf6N9tLzPhgJicVYC/9 3qapdzTuTrTav5RCt00I7rDYgE4kXvdZYnEbw93fU8kTUWSOxD3GGUm9tl24JBupvRjM6ZXXAFqHN QK73Z+bjDFX5M7+09F3h1IiavdSukkbRPAwGIMmnYmb0DKNn0PtowdTCqbJ4R0ut4b6tp/V04ECy+ Xlh9TlTQ==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1qj8J4-004cpK-2I; Thu, 21 Sep 2023 01:16:38 +0000 Date: Wed, 20 Sep 2023 18:16:38 -0700 From: Luis Chamberlain To: Zi Yan Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Ryan Roberts , Andrew Morton , "Matthew Wilcox (Oracle)" , David Hildenbrand , "Yin, Fengwei" , Yu Zhao , Vlastimil Babka , Johannes Weiner , Baolin Wang , Kemeng Shi , Mel Gorman , Rohan Puri , Adam Manzanares , John Hubbard Subject: Re: [RFC PATCH 0/4] Enable >0 order folio memory compaction Message-ID: References: <20230912162815.440749-1-zi.yan@sent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: Luis Chamberlain X-Spam-Status: No, score=-4.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Wed, 20 Sep 2023 18:16:53 -0700 (PDT) On Wed, Sep 20, 2023 at 05:55:51PM -0700, Luis Chamberlain wrote: > Are there other known recipes test help test this stuff? You know, it got me wondering... since how memory fragmented a system might be by just running fstests, because, well, we already have that automated in kdevops and it also has LBS support for all the different large block sizes on 4k sector size. So if we just had a way to "measure" or "quantify" memory fragmentation with a score, we could just tally up how we did after 4 hours of testing for each block size with a set of memory on the guest / target node / cloud system. Luis