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IA1PR10MB5994.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Nov 2024 18:03:04.9971 (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: c9GPzga5BYQV9XRCud3Hhrk2zbpp/xyv+BMLY74sfChkdZ2l1FYAfDgUEYoKgrHMK9nfqUyljUAb4Az1tt2P/ADHQZbKWZJV8MOtjHZ3s88= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR10MB6504 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-11-13_10,2024-11-13_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 malwarescore=0 mlxscore=0 bulkscore=0 suspectscore=0 phishscore=0 mlxlogscore=999 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2409260000 definitions=main-2411130149 X-Proofpoint-ORIG-GUID: s0HE5zv1JigpWEx50Xr9vKtdZHwtKA49 X-Proofpoint-GUID: s0HE5zv1JigpWEx50Xr9vKtdZHwtKA49 Hello, During performance testing, we found a regression of ~9% performance with the TPCC benchmark.   This performance regression was introduced in v6.6-rc1.  After a bisect, the following commit was identified as the cause of the regression: 86bfbb7ce4f6 ("sched/fair: Add lag based placement") I was hoping to get some feedback from the scheduler folks.  Do you think gathering any additional data will help diagnose this issue?  Are there any tunable options that can changed to see how performance is affected? Thanks, Joe