Received-SPF: pass (google.com: domain of linux-kernel+bounces-17170-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: Chuck Lever III <chuck.lever@oracle.com>
To: Matthew Wilcox <willy@infradead.org>
CC: Feng Tang <feng.tang@intel.com>, "Sang, Oliver" <oliver.sang@intel.com>,
        "oe-lkp@lists.linux.dev" <oe-lkp@lists.linux.dev>, lkp <lkp@intel.com>,
        Linux
 Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Christian Brauner
	<brauner@kernel.org>, linux-mm <linux-mm@kvack.org>,
        "Huang, Ying"
	<ying.huang@intel.com>,
        "Yin, Fengwei" <fengwei.yin@intel.com>,
        Liam Howlett
	<liam.howlett@oracle.com>
Subject: Re: [linus:master] [shmem]  a2e459555c:  aim9.disk_src.ops_per_sec
 -19.0% regression
Thread-Topic: [linus:master] [shmem]  a2e459555c:  aim9.disk_src.ops_per_sec
 -19.0% regression
Thread-Index: 
 AQHZ4hUlovnTGopJRkWINRJx8jG2QrARAWsAgAVqhYCAAMJWAIAAJUUAgAANNoCAs2TmAA==
Date: Thu, 4 Jan 2024 19:33:47 +0000
Message-ID: <D00399D9-D629-4CE3-AC32-636FD6F06C24@oracle.com>
References: <202309081306.3ecb3734-oliver.sang@intel.com>
 <C85F44FD-BC7D-421B-9585-C5FDFAEA9400@oracle.com>
 <ZP++GV9WURg1GhoY@xsang-OptiPlex-9020>
 <84984801-F885-4739-B4B3-DE8DE4ABE378@oracle.com> <ZQCAYpqu+5iD0rhh@feng-clx>
 <ZQCLdzmtVcjxZWXt@casper.infradead.org>
In-Reply-To: <ZQCLdzmtVcjxZWXt@casper.infradead.org>
Accept-Language: en-US
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: 
 =?utf-8?B?NlJnWkRjNC9MR3BwdkxrYVl4dExkL3llbFdaM0lVUE5aczduc1dTa1lZRER4?=
 =?utf-8?B?MmVHSkZMNmRmTEMxU1pYVTB4dkdYdlp3bnhEUmYyd2w4Kzd6N0c5cWF5RUhX?=
 =?utf-8?B?bFErNEpCNTloenQ1YXhRSFJmNlFjemwxc29jQmlHSWllWGhyMUZSV212ZHB6?=
 =?utf-8?B?S3FsRU5sMVVMTVhRZXp5d0loSitqZEttMVpBZDlweTVHa1dOLytlTjVTQU5j?=
 =?utf-8?B?clpqaFVCWjM4NXZaR05ua0puelc0alREZ21aSkNYa0hYdHpta3Z5VXFzZ3JP?=
 =?utf-8?B?dVNHQnN5QkhIT01aZmhKeGVnYm9IR3Nya1FaMi9DR0loN3Y2RGY3VWJmcGdE?=
 =?utf-8?B?TlU3b21jUU5aWUVldGVDWEpEaEVWUkY5dXUvQm5jYXlGUmMwMWlIaDRNWjgx?=
 =?utf-8?B?V1htbGVxdDM3NURieTJRbThkaXRTWWlFc2ZTSmF3OWtReVRkMUg3YVBrVkFV?=
 =?utf-8?B?TWh4eDg5bmFNdVNiMlVZMkkvak1MaU96dmdSMXEzZVFzZWNEMWx1QWZucnYw?=
 =?utf-8?B?V2FOQVVUTFVaM2RyQVFDQVY0QU9lQmJwekIrK1A4ZEJhNzVFY0M5bXIxN3NE?=
 =?utf-8?B?NCsxcEo4VWpQTWFoTEJZTzdkYm13ZTRtVGppL3hoWTFhaVZTaXppNmx6THYv?=
 =?utf-8?B?ZitFdm9yN291ZUhQbkpCWHRVdTdwRXZqTGdHdnE2OTl3Nkk2WXFpMzg2b1FQ?=
 =?utf-8?B?NG9HaXBhb2V5REZPL3UvS1p3VVMxdC9sSS9zQmpSR1V5NFBhSk9vbjc0R3I5?=
 =?utf-8?B?REFCcXVtREgvMEs0UXNTZmZFZjJoZW5vQUE4dmpIOGNpaE4vZnEzaHZaWjFa?=
 =?utf-8?B?VnVlNmNiM0JWeDkvYWxrdHprWVdwWTRaaFZ3WjlvQkUzYzNWNXJhVjJUenZE?=
 =?utf-8?B?WVVhVnZKWENrSzVwRzJRcHRCVVYvUVR6WEc4cjZuWmEwQlFRYklYZkZRTmNs?=
 =?utf-8?B?Mk55Um9hb09uUWlGcXdVR2NCLzNJbFdKVGhQbE5FRFRFZGZxN3RBNkJSbklF?=
 =?utf-8?B?MFVxb2JBL2JIRlB3amFnZ2VkSmVQSmNlWjBSYi9DUTZ3RktHSk1xeDBzcUJO?=
 =?utf-8?B?SGhLWU1PWisvYWkvdjZtUVI3anU2WkZISW0xbXZFcGhtSHFXWDhHSmUwNGRG?=
 =?utf-8?B?UGl5RWw0dU9sUXZXWU8rOXNWV1ZibGo0cjdWTXIyWEZkVTJLeUxmQko1M3VF?=
 =?utf-8?B?T3UvWkl2SktkNzRzWW80eGNscVBGN2l2QzdXTlpiN0VWSEJlUjBjMy8xMkYy?=
 =?utf-8?B?UTRoUUhpOHJWcU94bFZTT0FHT0JyY2MrOENFZmxreXBlR21jMEtoNnFRalNk?=
 =?utf-8?B?RFBRQnd1M0xxTmZnZVhGeTVYWDAvSmQ1SmVtWWF5TFIrQkozeERnTXk4WmJp?=
 =?utf-8?B?NUdOZlpIYm9wYklONjlETmpLK3RFWFpDYXRqNmlKakNJZkpoZm0wMk1QRUdq?=
 =?utf-8?B?bHZzd3gyNXRUWEppYng1TEJFVUxJVlZSb2RERkVkUmZyRVl6bGZzby84Vncv?=
 =?utf-8?B?eHd2MlBScmo4MzYzdEk3Nm9mOG1WRVRKQTY2OGZXMTd3VDZjaUZaTWMxeW1Q?=
 =?utf-8?B?TVpHekdBVUhaRzA1eEVuZ3JraUlrelZzSGRSeDVYT0xQMlFiZldkck9ZWXhZ?=
 =?utf-8?B?SGFPVXBRcGdRdWltOCtib2NsU2VqY1RQYlArbmhWMnM5NEUveXJjVURDcjdU?=
 =?utf-8?B?SGFYdmNLQnVnM1lZWURXdldQWGJoUGZ4TmRVVVVwTkFhcmlEcEMycXZiOXJx?=
 =?utf-8?B?SjN2elpwekQ3MW5Ib0pLbHBwUkFKWXVvaFJLUlI2emw5bzdMOGo2eC9wUGJr?=
 =?utf-8?B?WnFtZ2FjVzkxK0xENlgvdHpsUzJBbmNtZjhicjVWamoxb1FkNFZsTG9VSFJ5?=
 =?utf-8?B?UmNrajB1RmdOZ0xyNzdrSURVSEw4T09GbFB1RDFCd0QzZjUyQlFQME9haitP?=
 =?utf-8?B?Tmw0K3huYUZCREFJMEhmYXIxN2NZeHZxMDdrQ0JEWlNiZTBNK3NEd2prcXJn?=
 =?utf-8?B?d1hTckdYdGNxSGZFOEl1VHVmaVArejNvb283dVJ5WWordXFoYWJobHFvRGF4?=
 =?utf-8?B?bU5BUUtocTQ2bG40ajRRVlRFQjJIYmVROWdVNXh2cG5zY1pzS0FtWFY0RlN6?=
 =?utf-8?B?VUpONkVMOXZkTEY3RWVybittdTFHNks4VDhDRm9XRmNSdU1TdTlsUUdiTW9W?=
 =?utf-8?B?MGc9PQ==?=
Content-Type: text/plain; charset="utf-8"
Content-ID: <55676B30AA27FD41961D0CB158007731@namprd10.prod.outlook.com>
Content-Transfer-Encoding: base64
Precedence: bulk
X-Mailing-List: linux-kernel@vger.kernel.org
List-Id: <linux-kernel.vger.kernel.org>
List-Subscribe: <mailto:linux-kernel+subscribe@vger.kernel.org>
List-Unsubscribe: <mailto:linux-kernel+unsubscribe@vger.kernel.org>
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 
	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
X-OriginatorOrg: oracle.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BN0PR10MB5128.namprd10.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 86a2e50c-db63-4a72-8a39-08dc0d5c1222
X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Jan 2024 19:33:47.1568
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: fqf8yL/fqFgIo29Pfg0XTEusf/pTDLLz9XZe9PkoK4O1CCwSXsk4CBGQAmR20AKZwBM6knQzUaLuVT7kPEt0LA==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLAPR10MB4929
X-Proofpoint-Virus-Version: vendor=baseguard
 engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26
 definitions=2024-01-04_11,2024-01-03_01,2023-05-22_02
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 phishscore=0 spamscore=0
 mlxlogscore=999 malwarescore=0 suspectscore=0 adultscore=0 bulkscore=0
 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000
 definitions=main-2401040152
X-Proofpoint-ORIG-GUID: QezNIFchSCrQYxIKRxxIIgBY_Fs-Oc_8
X-Proofpoint-GUID: QezNIFchSCrQYxIKRxxIIgBY_Fs-Oc_8
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