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 D6F46C3F6B0 for ; Wed, 17 Aug 2022 15:09:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240586AbiHQPJw (ORCPT ); Wed, 17 Aug 2022 11:09:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237609AbiHQPJt (ORCPT ); Wed, 17 Aug 2022 11:09:49 -0400 Received: from new3-smtp.messagingengine.com (new3-smtp.messagingengine.com [66.111.4.229]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58DB69E110; Wed, 17 Aug 2022 08:09:48 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id A625A580D61; Wed, 17 Aug 2022 11:09:47 -0400 (EDT) Received: from imap50 ([10.202.2.100]) by compute3.internal (MEProxy); Wed, 17 Aug 2022 11:09:47 -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=1660748987; x= 1660752587; bh=Khi/bs05TxCKfcNFvcfxvRz7OWau77FEzCskJB9DlNk=; b=K CnbBasmb5TNhSFnrDXDK4h/LIIXb3DDRyfAZ76Xaw7itkNSmT7BgFkBykO7oQ1UY Rek2tr2vhdGpplHlhKWW2/CqpClhfdY2HNWobG1xuvz+NIihnz/q6JpwIcmxg7Xm MlYC9Q/hd3JnVNghd/nlKRa+6CkPRbJZp6wh9q1AeAFWrih/qko4VJdEJYD/EDRf JEiEDhUa/NeD8ZLA72qnj+VaDgUn9YG8nimEiEm5soBO3BtltySLCDhZdJpC514G m2wgFIzIxHkxEQ0foSV9kyuipyNl7XavSx5NafMapZ+DxCpHc/Gky98IXXJ3x43c xgS+93ZkuxgymTFV+F5mg== 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=1660748987; x=1660752587; bh=Khi/bs05TxCKfcNFvcfxvRz7OWau 77FEzCskJB9DlNk=; b=ygRjiwT443ojTgeAPALaJC8noWRqKfejoFV7QjqXvlKs 3c1aC16QQsGdmWhXxd6jW2tDV7rJRhQ3jfR71bTF9vtQdSrS3vrsvNL8DxldZR3j Gzv4r+rNwrdcpIa8XIM1aKGPrq2iAny3ZPuuZLrV1h6bjzMBxKIOjEFm2rJqaIuF IHPdsDwp4M+WpEVQOhUazCFQy1NxofoutfDZ7LYoecsmoptIuF9mKtZSzN4k3Kvo PPiMUXU8SYiBfkOasOvebGKWE8zms6v4M7yhP8yvGTa4G0uiyaz7U5zbb+GAz/Sh NYX9UKhzzrnAHCleE89z6JAeQkSxv8OT9roXHmCEPw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdehiedgkeegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepofgfggfkjghffffhvfevufgtsehttdertderredtnecuhfhrohhmpedfvehh rhhishcuofhurhhphhihfdcuoehlihhsthhssegtohhlohhrrhgvmhgvughivghsrdgtoh hmqeenucggtffrrghtthgvrhhnpefgvdeukedtfefgfefgtdelffdvieeltefgfedutdff leeuieevieevkeehtdehueenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmh grihhlfhhrohhmpehlihhsthhssegtohhlohhrrhgvmhgvughivghsrdgtohhm X-ME-Proxy: Feedback-ID: i06494636:Fastmail Received: by mailuser.nyi.internal (Postfix, from userid 501) id 44CB21700082; Wed, 17 Aug 2022 11:09:47 -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: <85a141ae-56a7-4dcd-b75a-04be4b276b3a@www.fastmail.com> In-Reply-To: <20220817114933.66c4g4xjsi4df2tg@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> Date: Wed, 17 Aug 2022 11:09:26 -0400 From: "Chris Murphy" To: "Jan Kara" , =?UTF-8?Q?Holger_Hoffst=C3=A4tte?= Cc: "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-block@vger.kernel.org On Wed, Aug 17, 2022, at 7:49 AM, Jan Kara wrote: > > Another thing worth trying is to compile the kernel without > CONFIG_BFQ_GROUP_IOSCHED. That will essentially disable cgroup support in > BFQ so we will see whether the problem may be cgroup related or not. The problem happens with a 5.12.0 kernel built without CONFIG_BFQ_GROUP_IOSCHED. -- Chris Murphy