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=-5.8 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,URIBL_BLOCKED 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 6E077C4361B for ; Mon, 7 Dec 2020 13:22:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 403B82343E for ; Mon, 7 Dec 2020 13:22:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726055AbgLGNVz (ORCPT ); Mon, 7 Dec 2020 08:21:55 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:60136 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725774AbgLGNVz (ORCPT ); Mon, 7 Dec 2020 08:21:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607347228; 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=oUiOfk966dJJcf9pZKvx+8hjWQVZNkI78m5XaAH1pfQ=; b=OdsuD1kyFTl9Uz1LmvIdp2eZ2dhFXxnOGtzyWSfLHiW4tJIty0xAesOcHVlBwGGRItt61K t4YRpT+FSw8y0JTG1FUvUEjEYcGsla766FSjVAlRC0PBFbO71pbv8PlMQitvMGdBydW4Mi PEJacp7dbDrB43cCFgaSVQe8bP0KGNM= 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-586-BN3x6tUpNwakD-FcVPDnfQ-1; Mon, 07 Dec 2020 08:20:25 -0500 X-MC-Unique: BN3x6tUpNwakD-FcVPDnfQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E7960858180; Mon, 7 Dec 2020 13:20:22 +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 32B0760CA3; Mon, 7 Dec 2020 13:20:20 +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: <20201207131037.GA3826@xsang-OptiPlex-9020> References: <20201207131037.GA3826@xsang-OptiPlex-9020> <20201203064536.GE27350@xsang-OptiPlex-9020> <98294.1607082708@warthog.procyon.org.uk> To: Oliver Sang 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: <478031.1607347219.1@warthog.procyon.org.uk> Content-Transfer-Encoding: quoted-printable Date: Mon, 07 Dec 2020 13:20:19 +0000 Message-ID: <478032.1607347219@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Oliver Sang wrote: > > Out of interest, would it be possible for you to run this on the tail = of the > > series on the same hardware? > = > sorry for late. below is the result adding the tail of the series: > * ded69a6991fe0 (linux-review/David-Howells/RFC-iov_iter-Switch-to-using= -an-ops-table/20201121-222344) iov_iter: Remove iterate_all_kinds() and it= erate_and_advance() Thanks very much for doing that! David