公开(公告)号：US20210182194A1

公开(公告)日：2021-06-17

申请号：US17185648

申请日：2021-02-25

Applicant: Intel Corporation

Inventor： John J. Browne ,  Adrian Boczkowski ,  Marcel D. Cornu ,  David Hunt ,  Shobhi Jain ,  Tomasz Kantecki ,  Liang Ma ,  Chris M. MacNamara ,  Amruta Misra ,  Terence Nally

IPC: G06F12/0811 ,  G06F12/0871 ,  G06F9/50 ,  G06F11/07

Abstract: A performance monitor provides cache miss stall and memory bandwidth usage metric samples to a resource exhaustion detector. The detector can detect the presence of last-level cache and memory bandwidth exhaustion conditions based on the metric samples. If cache miss stalls and memory bandwidth usage are both trending up, the detector reports a memory bandwidth exhaustion condition to a resource controller. If cache miss stalls are trending up and memory bandwidth usage is trending down, the detector reports a last-level cache exhaustion condition to the resource controller. The resource controller can allocate additional last-level cache or memory bandwidth to the processor unit to remediate the resource exhaustion condition. If bandwidth-related metric samples indicate that a processor unit may be overloaded due to receiving high bandwidth traffic, the resource controller can take a traffic rebalancing remedial action.