From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bram Matthys Subject: Re: Write performance 50% compared to Windows Date: Tue, 01 Nov 2016 14:55:44 +0100 Message-ID: <84eaee69c190c1acdce494bd18de1200@mail.vulnscan.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.vulnscan.org ([149.210.174.15]:49614 "EHLO mail.vulnscan.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1424360AbcKANzr (ORCPT ); Tue, 1 Nov 2016 09:55:47 -0400 Received: from mail.vulnscan.org ([149.210.174.15]) by mail.vulnscan.org with esmtp (Exim 4.84_2) (envelope-from ) id 1c1ZXU-00009q-TV for linux-ide@vger.kernel.org; Tue, 01 Nov 2016 14:55:45 +0100 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Hi Daniel, Daniel Fraga schreef op 2016-11-01 14:03: > On Tue, 01 Nov 2016 11:37:42 +0100 > Bram Matthys wrote: > >> I have a Samsung SSD 850 EVO 4TB and under Linux I'm only getting >> ~240MB/s write speed. On Windows it's 490MB/s (yes, without cache). >> The read speed is the same on both Linux and Windows, though. Both >> are >> 512MB/s. > > Just curious: are you using the "deadline" scheduler? What file > system? Ext4? Yes, the deadline scheduler. On Linux I'm writing directly to /dev/sda, no file system. Regards, Bram