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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE278C433EF for ; Fri, 3 Dec 2021 22:19:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344218AbhLCWWX (ORCPT ); Fri, 3 Dec 2021 17:22:23 -0500 Received: from mail-wr1-f50.google.com ([209.85.221.50]:40930 "EHLO mail-wr1-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354009AbhLCWWT (ORCPT ); Fri, 3 Dec 2021 17:22:19 -0500 Received: by mail-wr1-f50.google.com with SMTP id t9so8568655wrx.7 for ; Fri, 03 Dec 2021 14:18:55 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=CO0ztj7/pipmp7ehHwcTcmjZVnurHNfUozf0SYjuN0k=; b=SVDAVtCDOH8cgtx0CLbCcvHX1mVkJBWkIZLOsFsj8WpL5MgGHpMz+GS6JwUEaS8PP9 LyJQiFG8weivAN7c/aqq5O5xjGt0wOcXNKqkLWr2YVAXncqcwEbHS70g0dia8yfCnO3w KnKx/XuyPuqa7tuFIxTKPiowEcL3gh0e7r2ucr+tdml3+NGclsFVWOgXugqqsBim0UUr spwL3NdiuLZsxS38kmIMN+Qf7pflvva6C3G7PsDrCM2cMvBTcfoRDqrCw594wvZiVzV9 s15uKEYm75ydcWxfzsAa/bb/4pXlJLX5zvTPBVH72dwvmL8rtDTm5FGxotsZHvIrOLVf gOSw== X-Gm-Message-State: AOAM533mekefh5NyoM4A9m9c9RPQQvr9g0D+Q8bDd7YIJbeEzWBKz1pV EUSRIYm7tjj/TaMvZtCyZ6alMLqSVHbTag== X-Google-Smtp-Source: ABdhPJwIZAT7V+zfKg3QEgIFZfN8RUtdJ/4Jogw8BqDUqMQKcnG36fIKz1uBJ6/j8LA9LAXeZemLRQ== X-Received: by 2002:adf:ab53:: with SMTP id r19mr24861903wrc.584.1638569934450; Fri, 03 Dec 2021 14:18:54 -0800 (PST) Received: from rocinante ([95.155.85.46]) by smtp.gmail.com with ESMTPSA id f13sm4639330wmq.29.2021.12.03.14.18.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Dec 2021 14:18:53 -0800 (PST) Date: Fri, 3 Dec 2021 23:18:52 +0100 From: Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= To: Tim Harvey Cc: Jingoo Han , Gustavo Pimentel , Rob Herring , Lorenzo Pieralisi , Bjorn Helgaas , linux-pci@vger.kernel.org, Richard Zhu , Jens Axboe Subject: Re: IMX8MM PCIe performance evaluated with NVMe Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org [+CC Jens as he is the block, I/O scheduler, NVMe, etc., maintainer] Hi Tim, [...] > What would a more appropriate way of testing PCIe performance be? I am adding Jens here for visibility as he does a lot of storage and I/O performance testing on various platforms and with various hardware, he also wrote fio[1], which I would recommend for testing over dd, and also is a NVMe driver maintainer. If he has a moment, then perhaps he could give us some tips too. 1. https://github.com/axboe/fio Krzysztof