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 BA446C25B08 for ; Wed, 17 Aug 2022 18:18:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238058AbiHQSSi (ORCPT ); Wed, 17 Aug 2022 14:18:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237352AbiHQSSd (ORCPT ); Wed, 17 Aug 2022 14:18:33 -0400 Received: from new2-smtp.messagingengine.com (new2-smtp.messagingengine.com [66.111.4.224]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19AEB25C79; Wed, 17 Aug 2022 11:18:33 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id 7124A580F8C; Wed, 17 Aug 2022 14:18:32 -0400 (EDT) Received: from imap50 ([10.202.2.100]) by compute3.internal (MEProxy); Wed, 17 Aug 2022 14:18:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= colorremedies.com; 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=fm1; t=1660760312; x= 1660763912; bh=GTnimwUywZDBseYTSOsg41R9INlAe7lXIxbkXU7vY1s=; b=r bdxUS2VrJ6gpO0Z28L+c5OAHuCB1ceXz1gqGsVC5IldclpPrwj6TpjZuEy/Zrwjy aXT2KJpxK1fkxIUevzBWnXaAMFS7tfHyV3pC8as9YZjREVzT/SHNVRqUEynBZhJW mUdMNWj1+LniYUUzD0Br+0vf+QLUfbv3VxcCTbtJE+VdnuWuGtdrL3Rs/YoyXGgq Q2AORZbGfywgYKpFCrSXy3OcfPMTmFshW3kEIDpposIlvTFS9h6APUxNwI8oTPzj LfWoJTwRH/qAM8IiqOOmSb00xrPx2EsRMEpT/ze0M6+aw8W9pXEx70zpe7lk5b4k L6B0qNSfQxImQr55t+e9A== 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= fm1; t=1660760312; x=1660763912; bh=GTnimwUywZDBseYTSOsg41R9INlA e7lXIxbkXU7vY1s=; b=2Rl7zFXmWgn0czl5UPtrtnH+aANzKZgVzCLaMyCYcgjm Lz8MDxaenLZq7NyKm+HSw4hsCZttZDHaPwdBRtfJEpOJm0qXG8LCOx7p0Sp4CsGf 7raw1v7OFOCBNCjI+sehEC95oER8tjydKRiZTAOv1s5sPYvNyUbIJyvuSwedawFz fsTWkmWN2ggPq5HVPyOQiFSWVxzZWZkENpe0t39rmNJJGeAzdUg/wOefrI6eDlQF /hgWliitU5nwPPqiyscmaQogoG0KlzuuRwm6he9fsl3YZDuUaYGRpfCmPNqVmrvc E8xq7VldKuBqHNns2UZyci0rgVNam7tcukVDh2F3YA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdehiedguddvfecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefofgggkfgjfhffhffvvefutgesthdtredtreertdenucfhrhhomhepfdev hhhrihhsucfouhhrphhhhidfuceolhhishhtshestgholhhorhhrvghmvgguihgvshdrtg homheqnecuggftrfgrthhtvghrnhepgfdvueektdefgfefgfdtleffvdeileetgfefuddt ffelueeiveeiveekhedtheeunecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpe hmrghilhhfrhhomheplhhishhtshestgholhhorhhrvghmvgguihgvshdrtghomh X-ME-Proxy: Feedback-ID: i06494636:Fastmail Received: by mailuser.nyi.internal (Postfix, from userid 501) id 24D4A1700083; Wed, 17 Aug 2022 14:18:32 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.7.0-alpha0-841-g7899e99a45-fm-20220811.002-g7899e99a Mime-Version: 1.0 Message-Id: In-Reply-To: <20220817181554.znqljc6mmci45ukd@quack3> References: <61e5ccda-a527-4fea-9850-91095ffa91c4@www.fastmail.com> <4995baed-c561-421d-ba3e-3a75d6a738a3@www.fastmail.com> <2b8a38fa-f15f-45e8-8caa-61c5f8cd52de@www.fastmail.com> <7c830487-95a6-b008-920b-8bc4a318f10a@applied-asynchrony.com> <20220817114933.66c4g4xjsi4df2tg@quack3> <85a141ae-56a7-4dcd-b75a-04be4b276b3a@www.fastmail.com> <20220817163059.kigrvdfmxfswmhls@quack3> <51cd43f9-ab6b-4dd6-814f-e0c1ace3143c@www.fastmail.com> <20220817181554.znqljc6mmci45ukd@quack3> Date: Wed, 17 Aug 2022 14:18:01 -0400 From: "Chris Murphy" To: "Jan Kara" Cc: =?UTF-8?Q?Holger_Hoffst=C3=A4tte?= , "Nikolay Borisov" , "Jens Axboe" , "Paolo Valente" , Linux-RAID , linux-block , linux-kernel , "Josef Bacik" Subject: Re: stalling IO regression since linux 5.12, through 5.18 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 17, 2022, at 2:15 PM, Jan Kara wrote: > OK, if this indeed passes then b6e68ee82585 ("blk-mq: Improve performance > of non-mq IO schedulers with multiple HW queues") might be what's causing > issues (although I don't know how yet...). I can revert it from 5.12.0 and try. Let me know which next test is preferred :) -- Chris Murphy