Re: [Intel-gfx] [PATCH v3 1/2] i915/perf: Drop the aging_tail logic in perf OA

On Fri, 02 Jun 2023 13:53:26 -0700, Umesh Nerlige Ramappa wrote: > Hi Umesh, > On DG2, capturing OA reports while running heavy render workloads > sometimes results in invalid OA reports where 64-byte chunks inside > reports have stale values. Under memory pressure, high OA sampling rates >

[Intel-gfx] [PATCH v3 1/2] i915/perf: Drop the aging_tail logic in perf OA

On DG2, capturing OA reports while running heavy render workloads sometimes results in invalid OA reports where 64-byte chunks inside reports have stale values. Under memory pressure, high OA sampling rates (13.3 us) and heavy render workload, occasionally, the OA HW TAIL pointer does not progress