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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?OXdHY1ZtcXF5bjlQdllmQUorRnBxaDlpM3hKS0JmMmlBZFR1MGM5RGVjeHY3?= =?utf-8?B?VVdTUGllNndNcVBqeFRTS0k1czMvMWF3ZUx0cTRWN0R5WlZTQVZtdFB5WS9u?= =?utf-8?B?VG92MzZZclk2bFVJd3E1ZERURXpOWVArSEI3OEVQaXAyWVNNSTRJaGc1L2ll?= =?utf-8?B?V3IvNDhSK0VVVU5DcmtZcW90MnFnMWxxQWYxcVJVYWxrU0h3bTl5YzN6bmFJ?= =?utf-8?B?TytsSmJJa3J6NjlyMHRHK3VjRHo0dUhINWRjNmt6bXczR2RJWTVQM3JwaEEx?= =?utf-8?B?NHVIeGZ4SjhYN2VFQ3IwNEtsMlVKZE1yMm9leFhNVVl3RjMzSHBDdUdtaEN2?= =?utf-8?B?UUZnL0ZUVlBSaG9laHRIWGNEbWlqb1FsamcvM1g3SE1HdnhjSmNreW5vRnBq?= =?utf-8?B?QjVwZjJLQ3VaYzNUZmc1SlVlR2NCUFBHSVhQVi9rODVtZVBIK205R3IvaE5O?= =?utf-8?B?aTdlN3dUeWsvUUtaVWRlMmY0cXpVMXlTaFZFSlJIZkZ3MlBuUzMrNmZUQXlB?= =?utf-8?B?YVQ3cUF2MEhBd0QvUFM2RGdmVEh5TTkxYWpxZ0ZPSzRkWG9IQ2JTWVRTcm5V?= =?utf-8?B?TnBPWmtpd1NocDFxQ2J6UmVCaThxeWhIRWdVUEV1eWFOK2tRSWJyeXNnaWZ5?= =?utf-8?B?VkJqYThEUTg5cHE4MVc1MHhiczR6NjB5RFdycklBQXd5MStuS0NEWXlXL00v?= =?utf-8?B?cHAydXRxZ2VFUXFBRVpQYnEybis4ZzkvY2RTSW56UmZJWEFqdUNUdFNzTkFy?= =?utf-8?B?R1luc1BzQWRrYzZCTi9FVWp6OWI2Tmdwa3dESy9UdXk3Q2F3ZkVzLyttOVB1?= =?utf-8?B?OURySHpRTm5PcDI3Z3VWcnZ5eld2TVhPeWRuYmN6dldsZ0tLQ1JudFoyRTJU?= =?utf-8?B?aFpqU0ZYQnVnanNVYWdmbGYzU080VmkxaEdrWUx5MkJxRWRVclFJTGkxQ2M0?= =?utf-8?B?WXVBdnd0MVhzbEg1dFhOQUtpVVJBWE9JdGhqZGhSbjM4L0YybGd5cWp3WnJL?= =?utf-8?B?L3gzb0hqeExZVENBb2ZnRUJGZWtOV2FWencrcmNITFczYWJSNy81OXJ4ZnpF?= =?utf-8?B?WFQ1RzZNYzhUSW5OV1pxckNxMUhKMUZUcmhRcjY0eGZEWmo4NWI3UzlzWlM3?= =?utf-8?B?SkYrV1dQRlNsdU85ZGd0dU13K00rZ0lmY1pmdlY4a0tZZ0JHN0x5R2RQOGNr?= =?utf-8?B?c3JQQTlwZDdLNUJsTVE0bzJOemlLcGZUZ2NqeE1adDdvWmhYclh5cWlBL0d2?= =?utf-8?B?SVZIUlRMMytPZGJhZjNqWVI0aVpBZTFQOUFPQ2RJdDQ2dVIyZDJFY2ZxelB1?= =?utf-8?B?ZGovQ0p3aG9nd1JMWllHYndldHdyd0MveFozalo5dXFyckVCdkdOV2hMSlA1?= =?utf-8?B?SVdZTzFUejE1eGZtaVY3Y3gxaVdadG5EeGQ0TzgwdFV3UWlZL0E0ZEdvQUlP?= =?utf-8?B?OVNkM202Uno5dHJ3bzZvdnl5SVRSVXRYOHJZRHhTdzQvOWo1Q0FnSGFBancw?= =?utf-8?B?VHFtK1pVTXJCSUVRbmRTSkJnN0QxVmwxNlNXMTVyS1hWaUM5cGxrTkhjMEpT?= =?utf-8?B?RmJSMDhYZ3JKa2YvWis2R0l3cldGVHVBeUludExEQURMOTF6SU9LQ2YxVkYv?= =?utf-8?B?RUdDaVFDREdtaXlSd2lhQURQaTlyUEJzbWRIOEdpNXd6dFFFZHZpQXM2RFMz?= =?utf-8?B?dVFyRHBQY0FlZUpqL0xJNXduNENDL1V2MDBiMGJ2b0g4Y1FweVlyckltc1g3?= =?utf-8?Q?ErffMO3Ignp3HX85tZnVJTrc0Lskx4IfgYisYZe?= X-MS-Exchange-CrossTenant-Network-Message-Id: e4d28485-575a-4849-5f43-08d9793abe68 X-MS-Exchange-CrossTenant-AuthSource: BYAPR03MB3623.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Sep 2021 17:52:26.1070 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 335836de-42ef-43a2-b145-348c2ee9ca5b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: emXLVIiZ6jpxpTWMzXtYopWEqSuk71poXRctJFdDVIZJKKu2PB9GSqI4rL3wIrgeO9Me9aYjhkEhsRn5J3B92MnZ2/wS3rab2B8OeNQwOqo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR03MB5775 X-OriginatorOrg: citrix.com On 16/09/2021 13:30, Jan Beulich wrote: > On 16.09.2021 13:10, Dmitry Isaikin wrote: >> From: Dmitry Isaykin >> >> This significantly speeds up concurrent destruction of multiple domains = on x86. > This effectively is a simplistic revert of 228ab9992ffb ("domctl: > improve locking during domain destruction"). There it was found to > actually improve things; Was it?=C2=A0 I recall that it was simply an expectation that performance would be better... Amazon previously identified 228ab9992ffb as a massive perf hit, too. Clearly some of the reasoning behind 228ab9992ffb was flawed and/or incomplete, and it appears as if it wasn't necessarily a wise move in hindsight. ~Andrew