From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751359AbeAPKy5 (ORCPT + 1 other); Tue, 16 Jan 2018 05:54:57 -0500 Received: from lilium.sigma-star.at ([109.75.188.150]:47742 "EHLO lilium.sigma-star.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750868AbeAPKyz (ORCPT ); Tue, 16 Jan 2018 05:54:55 -0500 From: Richard Weinberger To: yuyufen Cc: dedekind1@gmail.com, adrian.hunter@intel.com, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org Subject: Re: [RFC PATCH] ubifs: Add zstd support Date: Tue, 16 Jan 2018 11:55:50 +0100 Message-ID: <1873847.6rsxvVuuTU@blindfold> In-Reply-To: <7c454b10-6bec-8123-e750-7e6e4772b76e@huawei.com> References: <20180112092421.22095-1-yuyufen@huawei.com> <7790203.HFZG64yrZx@blindfold> <7c454b10-6bec-8123-e750-7e6e4772b76e@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: Am Dienstag, 16. Januar 2018, 07:16:44 CET schrieb yuyufen: > On 2018/1/12 18:45, Richard Weinberger wrote: > > Yufen Yu, > > > > Am Freitag, 12. Januar 2018, 10:24:21 CET schrieb Yufen Yu: > >> Add zstd compression and decompression support to ubifs. zstd at its > >> fastest level compresses almost as well as zlib, while offering much > >> faster compression and decompression, approaching lzo speeds. > >> > >> This patch is based on the patch: > >> https://patchwork.kernel.org/patch/9892631/ > >> > >> zstd source repository: https://github.com/facebook/zstd > > > > Do you have numbers on how much we gain for UBIFS on a typical embedded > > device? > > > > Thanks, > > //richard > > > > . > > This is a RFC patch. I will post the test results after the full > function completing. Well, I have nothing against adding zstd support to UBIFS, if you can show that it is useful and can explain why we should use zstd and not another modern compressor. Thanks, //richard