From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr10105.outbound.protection.outlook.com ([40.107.1.105]:52802 "EHLO EUR02-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S244035AbhIAOSV (ORCPT ); Wed, 1 Sep 2021 10:18:21 -0400 Subject: Re: Question: t/io_uring performance From: Erwan Velu References: <9025606c-8579-bf81-47ea-351fc7ec81c3@kit.edu> <867506cc-642e-1047-08c6-aae60e7294c5@criteo.com> <5b58a227-c376-1f3e-7a10-1aa5483bdc0d@kit.edu> <1b1c961d-ddba-18de-e0ff-fd8cf60f5da8@kit.edu> <74c59a8b-9475-6554-7d93-f9c5f26cc652@criteo.com> <2df22c68-6040-298e-4512-752cd10b7201@kit.edu> <5015f1e3-eaeb-ef9e-e530-83c21db5aeb7@criteo.com> Message-ID: Date: Wed, 1 Sep 2021 16:17:21 +0200 In-Reply-To: <5015f1e3-eaeb-ef9e-e530-83c21db5aeb7@criteo.com> Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Transfer-Encoding: 8bit Content-Language: en-US MIME-Version: 1.0 List-Id: fio@vger.kernel.org To: Hans-Peter Lehmann , "fio@vger.kernel.org" Le 01/09/2021 à 16:05, Erwan Velu a écrit : > > [...] > These numbers are perfect. > > I rebuild fio on a 5.4 kernel on a high-end nvme which is 1M iops read > capable and got stuck at the same number as you aka 580K iops. > > So, I'd agree with you something is curious here. > Same on a 5.10.35. Jens, did we missed something here ? Erwan,