From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2459548-1517963972-2-11865402613348230001 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no ("Email failed DMARC policy for domain") X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, RCVD_IN_DNSWL_MED -2.3, SPF_PASS -0.001, UNPARSEABLE_RELAY 0.001, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='140.211.166.138', Host='smtp1.osuosl.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: plain='us-ascii' X-IgnoreVacation: yes ("Email failed DMARC policy for domain") X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: driverdev-devel-bounces@linuxdriverproject.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1517963971; b=k/aGKr8aDn33L7PPSFL4tX5BY8tZT579ChYBR0vQ9zTEz75 +DxqOYZwq88QgKrkwVkbaZrvRrOiVOUxGM8zIpZwFwTIW3wBkW+RGp5E1xijMYQs kTWHkPdIUM2d3f5BrdfTPoE8liW3NJ2uV6LYZ4bXclshKEhxBvO2aXOSf0om0oBR CRQ85d7zeEtudtGX4ahx7W5Qs5TKVExIEeBOfEVl5hYiav2N6fkmbzSQX2A/2P3S gQdP2wekNrLY7QderVpRznuhKJ4n+N/73yRe3gkxnp5ny2omjQyVaZzKE3z6x3L/ U07YdDhZ84KT8VSa2k4oDblxljPaOiiXeJ5qFNA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=to:subject:from:references:date :in-reply-to:message-id:mime-version:list-id:list-unsubscribe :list-archive:list-post:list-help:list-subscribe:cc:content-type :content-transfer-encoding:sender; s=arctest; t=1517963971; bh=i TsFD9we/LPWhJn8quvXM2U+H7nrm+cnYCzx06NMjGQ=; b=eABGRPflmNcAnXsk8 hBQqdT9P2EzoOaiU/JGhcbrzypV0MyrhK/LQEj2dpHf88lYyM9mI5jdWbfAvs2JZ ftLWizofMkhs1hL27m570B2cOY5AeyqhFV6ePiRxE4KtXE+o3r1lYTWNhpj64yM3 ShE3bx7IhLofQfQpd/J95pQ2KpLzP975CGWMajtatjwAdrvf4TfwKFlMouRwdd7r xk4GUun5DK/OTRwYaws1VEHrkeFrlziN5TTevGDTNKoSqNO84iTjP7VPdk+VKoWO SSDq8TNZaoEsgum6Je+UT4tGJA3aFJXQBUwON3j0OcQkxG70r+7c/80e2i+o6sRL 99zeA== ARC-Authentication-Results: i=1; mx3.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered; 2048-bit rsa key sha256) header.d=oracle.com header.i=@oracle.com header.b=avdh4Rcy x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=corp-2017-10-26; dmarc=fail (p=none,has-list-id=yes,d=none) header.from=oracle.com; iprev=pass policy.iprev=140.211.166.138 (smtp1.osuosl.org); spf=pass smtp.mailfrom=driverdev-devel-bounces@linuxdriverproject.org smtp.helo=whitealder.osuosl.org; x-aligned-from=fail; x-ptr=fail x-ptr-helo=whitealder.osuosl.org x-ptr-lookup=smtp1.osuosl.org; x-return-mx=pass smtp.domain=linuxdriverproject.org smtp.result=pass smtp_is_org_domain=yes header.domain=oracle.com header.result=pass header_is_org_domain=yes; x-tls=pass version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128 Authentication-Results: mx3.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered; 2048-bit rsa key sha256) header.d=oracle.com header.i=@oracle.com header.b=avdh4Rcy x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=corp-2017-10-26; dmarc=fail (p=none,has-list-id=yes,d=none) header.from=oracle.com; iprev=pass policy.iprev=140.211.166.138 (smtp1.osuosl.org); spf=pass smtp.mailfrom=driverdev-devel-bounces@linuxdriverproject.org smtp.helo=whitealder.osuosl.org; x-aligned-from=fail; x-ptr=fail x-ptr-helo=whitealder.osuosl.org x-ptr-lookup=smtp1.osuosl.org; x-return-mx=pass smtp.domain=linuxdriverproject.org smtp.result=pass smtp_is_org_domain=yes header.domain=oracle.com header.result=pass header_is_org_domain=yes; x-tls=pass version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128 X-Remote-Delivered-To: driverdev-devel@osuosl.org To: "Michael Kelley \(EOSG\)" Subject: Re: [PATCH 1/1] scsi: storvsc: Spread interrupts when picking a channel for I/O requests From: "Martin K. Petersen" Organization: Oracle Corporation References: <1516831913-26013-1-git-send-email-mikelley@ntdev.microsoft.com> Date: Tue, 06 Feb 2018 19:39:17 -0500 In-Reply-To: <1516831913-26013-1-git-send-email-mikelley@ntdev.microsoft.com> (Michael Kelley's message of "Wed, 24 Jan 2018 22:14:08 +0000") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8797 signatures=668663 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=603 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1802070006 X-BeenThere: driverdev-devel@linuxdriverproject.org X-Mailman-Version: 2.1.24 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Hemminger , "linux-scsi@vger.kernel.org" , "martin.petersen@oracle.com" , "JBottomley@odin.com" , "linux-kernel@vger.kernel.org" , "longi@microsoft.com" , "devel@linuxdriverproject.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Michael, > Update the algorithm in storvsc_do_io to look for a channel starting > with the current CPU + 1 and wrap around (within the current NUMA > node). This spreads VMbus interrupts more evenly across CPUs. Previous > code always started with first CPU in the current NUMA node, skewing > the interrupt load to that CPU. Applied to 4.16/scsi-fixes. Thanks! -- Martin K. Petersen Oracle Linux Engineering _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel