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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Apr 2023 16:03:43.6454 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 73243a4a-287e-4843-b876-08db3d01d25c X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DBAEUR03FT065.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR08MB8010 X-Spam-Status: No, score=-4.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,FORGED_SPF_HELO,KAM_DMARC_NONE,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE,TXREP,T_SCC_BODY_TEXT_LINE,UNPARSEABLE_RELAY autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Hi,=0A= =0A= > The next question is whether the splitting of one huge page causes the wh= ole=0A= > stack mmap to use small pages too. =0A= =0A= Btw if it wasn't obvious, you can trivially check this by creating threads = that use=0A= 3MB of stack. Then the RSS per thread should be either 3MB (only small page= s,=0A= no RSS loss!), 4MB (2 large pages, no RSS loss), 5 MB (3MB small pages, 2MB= loss)=0A= or 6MB (2 large pages, 2MB loss).=0A= =0A= Cheers,=0A= Wilco=