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 5F091C001DF for ; Sun, 23 Jul 2023 11:05:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229534AbjGWLFf (ORCPT ); Sun, 23 Jul 2023 07:05:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229491AbjGWLFe (ORCPT ); Sun, 23 Jul 2023 07:05:34 -0400 X-Greylist: delayed 581 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Sun, 23 Jul 2023 04:05:31 PDT Received: from s1.sapience.com (s1.sapience.com [72.84.236.66]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2504D10D1; Sun, 23 Jul 2023 04:05:31 -0700 (PDT) Authentication-Results: dkim-srvy7; dkim=pass (Good ed25519-sha256 signature) header.d=sapience.com header.i=@sapience.com header.a=ed25519-sha256; dkim=pass (Good 2048 bit rsa-sha256 signature) header.d=sapience.com header.i=@sapience.com header.a=rsa-sha256 Received: from srv8.prv.sapience.com (srv8.prv.sapience.com [x.x.x.x]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by s1.sapience.com (Postfix) with ESMTPS id 897AF480A2C; Sun, 23 Jul 2023 06:55:49 -0400 (EDT) DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=sapience.com; i=@sapience.com; q=dns/txt; s=dk-ed25519-220413; t=1690109749; h=message-id : date : mime-version : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding : from; bh=lr/rmxq8EwVEr8RixWBy+Sg5CImzrHwG+MAvhFEdjrY=; b=5xq7ImbbNDtqxgLyR74YtRbUPMj7JgZq6+4t+9YxzN6WyMRoiV2aWM0RWau4syANOCqra T05v5YPcYK35M/GDQ== ARC-Seal: i=1; a=rsa-sha256; d=sapience.com; s=arc6-rsa-220412; t=1690109749; cv=none; b=InRQ2iCFm9Ckw6g7VGsf+8b6tDblLqbx9m33kc3oxcxf4nRgoFrPw07j0THgoUNZYpqfsAjMG6PdgBMjKh9B4lOV4pxi326W+SFCoRpY+nJgl82VBxZebQu/+jLRePEVz01jTVoHx11LXMFO8IUPypSdTFMfwZariA0iDtl10DgQHu23ooLUConcRoITayOlXyChmnQtuHcTGuqDWz3H2PwBC5ipQsN+QrD7j/zZuDL+snhJ99Rbhr6Iu7/dlSVh3CVYtJAXDFIIzHdTEC48V0zbxRPVM+lqlNdxItCn4PMwhTicYE01LqQc7m+dPsgCbCqFDRu5BBaBZi+I3Uou+Q== ARC-Message-Signature: i=1; a=rsa-sha256; d=sapience.com; s=arc6-rsa-220412; t=1690109749; c=relaxed/simple; bh=GLmMY0POgZIVkTblze2QbmkCf2EJW164BJIcQRZnmc8=; h=DKIM-Signature:DKIM-Signature:Message-ID:Date:MIME-Version: User-Agent:Subject:To:Cc:References:Content-Language:From: In-Reply-To:Content-Type:Content-Transfer-Encoding; b=BBn2gTVC3/aM1tWPCpEsYQIOU5/I3myjX+roKKs39ISfPXmDwpHg03NsoPjNiJ63xvavbuv/rvGPU56C/SO3D1BZ7snc1ptl4BGylIiHaW48gXcoQx+GGljjJ40NjDr+LL4k5PPs0QcSjDtnvEnk9zOFl6k61xnvBPtYMi8ZVpSnW/H9YgRwUYH9dE3E2joQvTGmXHKcWyRSI0eACyjK1GDcKCj4g8SLZhcCCAWLWuPAVN5KAgW/TVGjhWt3PiS2QFHlGVI2CUElt2wCApzVwrT4nhYQqLuy4cq77V35CXtoDCrWszEFSKE94/7IYCzjVscXmInWYB39CPZ71GH/Rg== ARC-Authentication-Results: i=1; arc-srv8.sapience.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sapience.com; i=@sapience.com; q=dns/txt; s=dk-rsa-220413; t=1690109749; h=message-id : date : mime-version : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding : from; bh=lr/rmxq8EwVEr8RixWBy+Sg5CImzrHwG+MAvhFEdjrY=; b=SVpSLp5s5ZSniJoLH1bOMkeWMuAULB1/RmtfCIDsU8gWVlY3b2LTZNX7eoMSkKCQaGoQU YjYGAPaUHReZJecXPpJI2oq5RLvDW/6UUwIitjtSiGReOjUXCkzy4O0Fi1rbkLIk3PVTni4 jyRn7WQIaaVvxU2JzZInuj8fi1vMfJynK3wZG/ywFPfTdZu7EaGiv1He76Cx/MpGlJsy7bj xB31hQuxPkwzDoj7F+xPRMlwZhS3e+JXzEhH8QaGsAiW07krkrsZJxsX28omVzIambUgbaC veFDKheLm01sBYZEh0xG1u8lhUZ+j1gB8aZKK8KsJ9UarBX8NK3QS3kLFJ5A== Message-ID: Date: Sun, 23 Jul 2023 06:55:49 -0400 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 6.4 800/800] io_uring: Use io_schedule* in cqring wait To: Greg Kroah-Hartman , Oleksandr Natalenko Cc: stable@vger.kernel.org, Pavel Begunkov , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, Andres Freund , Jens Axboe References: <20230716194949.099592437@linuxfoundation.org> <20230716195007.731909670@linuxfoundation.org> <12251678.O9o76ZdvQC@natalenko.name> <2023072310-superman-frosted-7321@gregkh> Content-Language: en-US From: Genes Lists In-Reply-To: <2023072310-superman-frosted-7321@gregkh> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 7/23/23 06:50, Greg Kroah-Hartman wrote: > On Sun, Jul 23, 2023 at 11:39:42AM +0200, Oleksandr Natalenko wrote: >> Hello. >> >> On neděle 16. července 2023 21:50:53 CEST Greg Kroah-Hartman wrote: >>> From: Andres Freund >>> >>> commit 8a796565cec3601071cbbd27d6304e202019d014 upstream. >>> >>> I observed poor performance of io_uring compared to synchronous IO. That ... >> >> Reportedly, this caused a regression as reported in [1] [2] [3]. Not only v6.4.4 is affected, v6.1.39 is affected too. >> >> Reverting this commit fixes the issue. >> >> Please check. > > Is this also an issue in 6.5-rc2? > > thanks, > > greg k-h Yes - I can confirm this issue is in 6.5-rc2 and with Linus' commit c2782531397f5cb19ca3f8f9c17727f1cdf5bee8. gene