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 X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC2F6C4361A for ; Fri, 4 Dec 2020 11:53:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6835822A84 for ; Fri, 4 Dec 2020 11:53:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728484AbgLDLxW (ORCPT ); Fri, 4 Dec 2020 06:53:22 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:37760 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725999AbgLDLxW (ORCPT ); Fri, 4 Dec 2020 06:53:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607082716; h=from:from: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=d6DMcyImwNW8/yN8tZ5x35hfAGMlLSWgGVlroAI+zwE=; b=E2IZOOlnDQE97t8rlO+o7dxIzR8FMbJTTzvsKciJEtjmVCkGk3mocnCTm4frJEhzkspoJt Ci0clQTyn9tTY04JVVbtMTkWZzS8AkKHC3qlWyNiE5pz8xuaIuP1sTEp+nrq0L9etb/TmL GwJeIJjugQ6iAeNmLjqF1j3VQIoY3Hs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-274-leC3jpfvOhWjVCqCD3DNVA-1; Fri, 04 Dec 2020 06:51:54 -0500 X-MC-Unique: leC3jpfvOhWjVCqCD3DNVA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2558618C8C00; Fri, 4 Dec 2020 11:51:52 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-116-67.rdu2.redhat.com [10.10.116.67]) by smtp.corp.redhat.com (Postfix) with ESMTP id A484210016F5; Fri, 4 Dec 2020 11:51:49 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <20201203064536.GE27350@xsang-OptiPlex-9020> References: <20201203064536.GE27350@xsang-OptiPlex-9020> To: kernel test robot Cc: dhowells@redhat.com, lkp@lists.01.org, lkp@intel.com, ying.huang@intel.com, feng.tang@intel.com, zhengjun.xing@intel.com, Pavel Begunkov , Matthew Wilcox , Jens Axboe , Alexander Viro , Linus Torvalds , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [iov_iter] 9bd0e337c6: will-it-scale.per_process_ops -4.8% regression MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <98293.1607082708.1@warthog.procyon.org.uk> Content-Transfer-Encoding: quoted-printable Date: Fri, 04 Dec 2020 11:51:48 +0000 Message-ID: <98294.1607082708@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org kernel test robot wrote: > FYI, we noticed a -4.8% regression of will-it-scale.per_process_ops due = to commit: > = > = > commit: 9bd0e337c633aed3e8ec3c7397b7ae0b8436f163 ("[PATCH 01/29] iov_ite= r: Switch to using a table of operations") Out of interest, would it be possible for you to run this on the tail of t= he series on the same hardware? Thanks, David