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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EFFEECAAA1 for ; Mon, 5 Sep 2022 08:21:25 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D9A5D8D0059; Mon, 5 Sep 2022 04:21:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D49B58D0050; Mon, 5 Sep 2022 04:21:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C38CB8D0059; Mon, 5 Sep 2022 04:21:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id B509D8D0050 for ; Mon, 5 Sep 2022 04:21:24 -0400 (EDT) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 973E3A05C3 for ; Mon, 5 Sep 2022 08:21:24 +0000 (UTC) X-FDA: 79877337288.24.5D425FD Received: from mail-pl1-f181.google.com (mail-pl1-f181.google.com [209.85.214.181]) by imf07.hostedemail.com (Postfix) with ESMTP id 34D2340054 for ; Mon, 5 Sep 2022 08:21:24 +0000 (UTC) Received: by mail-pl1-f181.google.com with SMTP id jm11so7785215plb.13 for ; Mon, 05 Sep 2022 01:21:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date; bh=QJJrkpuUMAiWhW4XzbfzTI5fC6bC6BtFi/fBmxaoJTA=; b=f6XX12/+aqewys372pQoz6A/jL49JWT+dr8npWMakmaFD+gfhU4xyR15G1USnL733p IgWris/UsiHHuZj3ofYqdFhukzZSbA9CY150fSLJxtISrBKx32pf7B2oq9zrWr82lUws t6Js1k2fxKpQWM9viuLXDmMUHA++QlY8B6O18= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date; bh=QJJrkpuUMAiWhW4XzbfzTI5fC6bC6BtFi/fBmxaoJTA=; b=xAAzboXCj6LB+3RNttJvEn//nmbhVWiQT2oRmohA+Rw7qvxxF2XysMbYB52MTwfth3 nGatg+pLIYgYvtlHdNNHkvDpuVb2lV1hlY0jat5IorINdBOa1O56NTi3PPXKaVblVdFS Y6SK1kUlqh5OiN5vTa/jyWCivU/AGzQ9DI69oDODZthkAv0o42a0uwusGOpgxDmgeEnO vJNkO3xsOIWAB3w2bJ6K1kmK3f5ZtOENBv53eO60yXN7gLEByKl3UydQPjma3qoX7p9J UCvCoOcEGrsZB7r1beVukXbDhLxIi0UMGGjrXa7J/cpaJsQbh3T+hCt4iQxoAoRP2PCz EMKA== X-Gm-Message-State: ACgBeo1QtVq5uoZh9DaZGel9aTwB7cCLYxFljywn0gDWFZTBaKCWmeUw 4id2ccMFnCtwnEjpyk7zmr9gwA== X-Google-Smtp-Source: AA6agR5AroDfDVIj7QlIYRSAnSG4/lXstugSOvJ/A+iboIXnwjzC5rplGgQkqK3HDdxa8WKlUobNZQ== X-Received: by 2002:a17:902:f549:b0:176:c033:db03 with SMTP id h9-20020a170902f54900b00176c033db03mr305456plf.109.1662366083214; Mon, 05 Sep 2022 01:21:23 -0700 (PDT) Received: from google.com ([240f:75:7537:3187:5167:aa6c:9829:64dd]) by smtp.gmail.com with ESMTPSA id z127-20020a626585000000b005380c555ba1sm7288708pfb.13.2022.09.05.01.21.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Sep 2022 01:21:22 -0700 (PDT) Date: Mon, 5 Sep 2022 17:21:18 +0900 From: Sergey Senozhatsky To: Sergey Senozhatsky Cc: Minchan Kim , Andrew Morton , Nitin Gupta , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH RFC 0/7] zram: Support multiple compression streams Message-ID: References: <20220905081552.2740917-1-senozhatsky@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220905081552.2740917-1-senozhatsky@chromium.org> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1662366084; a=rsa-sha256; cv=none; b=PQ4NEV24hWWQVhdH67xVhRUXKy3gLPJ7A7ncHFoP0zSusd4H0uGj+h0+OBEAFX94cgezJ1 H4y8w7giv3+IFhyfxagayycDyIuDkq1O8MQsQcsgdsu5ntjhA5vjuGIwM7W76sQLu+OMP0 4roNMogUWYfxxujW1uMcPzMFNvb2YpE= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b="f6XX12/+"; spf=pass (imf07.hostedemail.com: domain of senozhatsky@chromium.org designates 209.85.214.181 as permitted sender) smtp.mailfrom=senozhatsky@chromium.org; dmarc=pass (policy=none) header.from=chromium.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1662366084; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=QJJrkpuUMAiWhW4XzbfzTI5fC6bC6BtFi/fBmxaoJTA=; b=mtIEBGmYd3AOb88x8bIyXi5E3aVLeTUaJFWMiEWQkxDIXYLnT5ffZZwyS1Re0CM0s3D2Tl hP2L3MNn9mOI9VQFPMMF6nnpqjzlhMDGkMdfi0fqtI5uQ09jI2HTpXznzosYVy3wJSeq9N j0nJXuAPIK3WNPmFL+TkRS6KVJhGDwU= X-Stat-Signature: ctgahgk85b9ehzy1ypgcze4bs3knbrge X-Rspamd-Queue-Id: 34D2340054 X-Rspam-User: Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b="f6XX12/+"; spf=pass (imf07.hostedemail.com: domain of senozhatsky@chromium.org designates 209.85.214.181 as permitted sender) smtp.mailfrom=senozhatsky@chromium.org; dmarc=pass (policy=none) header.from=chromium.org X-Rspamd-Server: rspam01 X-HE-Tag: 1662366084-373982 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000502, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On (22/09/05 17:15), Sergey Senozhatsky wrote: > Hello, > > RFC series that adds support for multiple (per-CPU) > compression streams (at point only 2). The main idea is that > different compression algorithms have different characteristics > and zram may benefit when it uses a combination of algorithms: > a default algorithm that is faster but have lower compression > rate and a secondary algorithm that can use higher compression > rate at a price of slower compression/decompression. > > There are several use-case for this functionality: > Please ignore this series. I had some extra patches in my "outgoing" directory. I'll resend.