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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E089FC433FE for ; Thu, 3 Nov 2022 12:12:28 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oqZ4F-0007jm-6t; Thu, 03 Nov 2022 08:11:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oqZ4C-0007i1-Nu; Thu, 03 Nov 2022 08:11:28 -0400 Received: from out5-smtp.messagingengine.com ([66.111.4.29]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oqZ4B-0003zn-AO; Thu, 03 Nov 2022 08:11:28 -0400 Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 856CA5C0101; Thu, 3 Nov 2022 08:11:26 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Thu, 03 Nov 2022 08:11:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=irrelevant.dk; h=cc:cc:content-type:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1667477486; x=1667563886; bh=dx 0fSg5Vcfzf5khcOv14CMx7VUrjeYWHlB5RlLkaw+I=; b=mXeGhsSZLysMeXG4DP cZtRBrp+Yiv2nLjJl2GSdMIvs6yRRwR+/G648IMSCMdv/6GSdLjarAHNaKC4YEJ1 qRORMi/1lsdkLRjPWP/6mSxbKSkLzCCcPYi0H595dxrsXjJFX3u+EL/563TKaz6D YDC5nXVz8kBMeeR3PL4BTildDNzlYLKgSLJyZhoxKwKUm6tnkFP+aS8u5LRBmyZ7 AtPt2hHKG+R0H2DeeuIIErIQi71KCF0iWOaZlS1KZMdR0L4iE5dFliRELhR8f4fc O5f1GdDNC7XUdhuzeZ6gdUmCZex9R2xRTTQwBD2PcPzIiDNdOT7N56MRl0rmShmJ qgdA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:date:date:feedback-id :feedback-id:from:from:in-reply-to:in-reply-to:message-id :mime-version:references:reply-to:sender:subject:subject:to:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; t=1667477486; x=1667563886; bh=dx0fSg5Vcfzf5khcOv14CMx7VUrj eYWHlB5RlLkaw+I=; b=JF5BBCGIZUDAb88HY22GtHJiEJVAvJuIbkj4PRki0f2g KkVX7Rx8BFBtLPlfDFz9Xr99aFaCwwR5U9ElVmWNfq2BwVeiT6F6dDAM9fqkhJJs aUCwnRlV6ExrovcbLsOJ0F5O7MZqlb5aeISRJ077gDjz5cxTHCGqmB2lbW6X1P6/ cJy7H8BAzR6cIk7be8GkssCLZxrfGTCWH1h92ZCwiVtCIXcj4ur5TTZBpyYZOh9c 0oSd+SpIiLTu3ygVnu6vZuj4jn4gSmQxsHyL1lFKZFKhHAFOIZGr/SRmXjs+FCRv vmuxGCNal1qVA/t6VhrOP+t+tiC4DSmjbzw/iq84PA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvgedrudelgdefvdcutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepfffhvfevuffkfhggtggujgesghdtre ertddtjeenucfhrhhomhepmfhlrghushculfgvnhhsvghnuceoihhtshesihhrrhgvlhgv vhgrnhhtrdgukheqnecuggftrfgrthhtvghrnhepjefgjeefffdvuefhieefhffggfeule ehudekveejvedtuddugeeigeetffffjeevnecuvehluhhsthgvrhfuihiivgeptdenucfr rghrrghmpehmrghilhhfrhhomhepihhtshesihhrrhgvlhgvvhgrnhhtrdgukh X-ME-Proxy: Feedback-ID: idc91472f:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 3 Nov 2022 08:11:25 -0400 (EDT) Date: Thu, 3 Nov 2022 13:11:23 +0100 From: Klaus Jensen To: Jinhao Fan Cc: qemu-devel@nongnu.org, kbusch@kernel.org, stefanha@gmail.com, "open list:nvme" Subject: Re: [PATCH v3 3/4] hw/nvme: add iothread support Message-ID: References: <20220827091258.3589230-1-fanjinhao21s@ict.ac.cn> <20220827091258.3589230-4-fanjinhao21s@ict.ac.cn> <90EFC69D-C01C-4066-B981-8B6C3C90D4C6@ict.ac.cn> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="BE8YzlQKlMIPeUoh" Content-Disposition: inline In-Reply-To: <90EFC69D-C01C-4066-B981-8B6C3C90D4C6@ict.ac.cn> Received-SPF: pass client-ip=66.111.4.29; envelope-from=its@irrelevant.dk; helo=out5-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Qemu-devel" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org --BE8YzlQKlMIPeUoh Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Nov 3 09:51, Jinhao Fan wrote: > at 7:13 PM, Klaus Jensen wrote: >=20 > > Otherwise, it all looks fine. I'm still seeing the weird slowdown when > > an iothread is enabled. I have yet to figure out why that is... But it > > scales! :) >=20 > How much slowdown do you observe on your machine?=20 >=20 I'll rerun some experiments and get back to you :) --BE8YzlQKlMIPeUoh Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEUigzqnXi3OaiR2bATeGvMW1PDekFAmNjr+sACgkQTeGvMW1P DelsCwf/bmLdTz8Ja+wZNX1wv/7qQDIEVnh4+yhKD3/UaZ2XhSA2N/AgidlhGL7G PtfndFsvtbLLHyzkL25vGn0Slh4lSaapgMeAo8p83QeBMN2/8mTh1/hG92dnB+b2 dzCyjJmQRcFmA0BbYY8Daz8Z12QGjud7Y5bdlh+IK7XlHZSDsxLiUdH6ICeNVlT1 CpVYi9pH6Cjwcp6kst5SPXWWp5oCuWmKnRgy1ZA1nHexq8TGeqBnGdtjU9WZRIxV Y70bPd5HtEqPYdO57Kqu+DaxkBcF4poNXdE7rgGnGQiqE55pTw23S/P4FN3ajlY1 QMABEXYFf99TgPHVM9POQ+Y2ycoL1g== =shhJ -----END PGP SIGNATURE----- --BE8YzlQKlMIPeUoh--