Re: [RFC][PATCH 08/10] sched/fair: Implement delayed dequeue

Peter Zijlstra
2024-05-23T08:46:04Z

On Mon, Apr 29, 2024 at 03:33:04PM +0100, Luis Machado wrote:

> (2) m6.6-eevdf-complete: m6.6-stock plus this series.
> (3) m6.6-eevdf-complete-no-delay-dequeue: (2) + NO_DELAY_DEQUEUE

> +------------+------------------------------------------------------+-----------+
> | cluster | tag | perc_diff |
> +------------+------------------------------------------------------+-----------+
> | CPU | m6.6-stock | 0.0% |
> | CPU-Big | m6.6-stock | 0.0% |
> | CPU-Little | m6.6-stock | 0.0% |
> | CPU-Mid | m6.6-stock | 0.0% |
> | GPU | m6.6-stock | 0.0% |
> | Total | m6.6-stock | 0.0% |

> | CPU | m6.6-eevdf-complete-no-delay-dequeue | 117.77% |
> | CPU-Big | m6.6-eevdf-complete-no-delay-dequeue | 113.79% |
> | CPU-Little | m6.6-eevdf-complete-no-delay-dequeue | 97.47% |
> | CPU-Mid | m6.6-eevdf-complete-no-delay-dequeue | 189.0% |
> | GPU | m6.6-eevdf-complete-no-delay-dequeue | -6.74% |
> | Total | m6.6-eevdf-complete-no-delay-dequeue | 103.84% |

This one is still flummoxing me. I've gone over the patch a few times on
different days and I'm not seeing it. Without DELAY_DEQUEUE it should
behave as before.

Let me try and split this patch up into smaller parts such that you can
try and bisect this.