From: Andrea Righi <andrea.righi@linux.dev>
To: Tejun Heo <tj@kernel.org>
Cc: David Vernet <void@manifault.com>,
Changwoo Min <changwoo@igalia.com>,
Dan Schatzberg <schatzberg.dan@gmail.com>,
Emil Tsalapatis <etsal@meta.com>,
sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 02/13] sched_ext: Make slice values tunable and use shorter slice in bypass mode
Date: Mon, 10 Nov 2025 09:22:12 +0100 [thread overview]
Message-ID: <aRGgtBUWV9VtKctq@gpd4> (raw)
In-Reply-To: <20251109183112.2412147-3-tj@kernel.org>
Hi Tejun,
On Sun, Nov 09, 2025 at 08:31:01AM -1000, Tejun Heo wrote:
...
> + /*
> + * %SCX_SLICE_DFL is used to refill slices when the BPF scheduler misses
> + * to set the slice for a task that is selected for execution.
> + * %SCX_EV_REFILL_SLICE_DFL counts the number of times the default slice
> + * refill has been triggered.
> + *
> + * %SCX_SLICE_BYPASS is used as the slice for all tasks in the bypass
> + * mode. As mkaing forward progress for all tasks is the main goal of
Small typo: s/mkaing/making/
-Andrea
> + * the bypass mode, a shorter slice is used.
> + */
> SCX_SLICE_DFL = 20 * 1000000, /* 20ms */
> + SCX_SLICE_BYPASS = 5 * 1000000, /* 5ms */
> SCX_SLICE_INF = U64_MAX, /* infinite, implies nohz */
> };
>
next prev parent reply other threads:[~2025-11-10 8:22 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-09 18:30 [PATCHSET sched_ext/for-6.19] sched_ext: Improve bypass mode scalability Tejun Heo
2025-11-09 18:31 ` [PATCH 01/13] sched_ext: Don't set ddsp_dsq_id during select_cpu in bypass mode Tejun Heo
2025-11-10 6:57 ` Andrea Righi
2025-11-10 16:08 ` Tejun Heo
2025-11-09 18:31 ` [PATCH 02/13] sched_ext: Make slice values tunable and use shorter slice " Tejun Heo
2025-11-10 7:03 ` Andrea Righi
2025-11-10 7:59 ` Andrea Righi
2025-11-10 16:21 ` Tejun Heo
2025-11-10 16:22 ` Tejun Heo
2025-11-10 8:22 ` Andrea Righi [this message]
2025-11-11 14:57 ` Dan Schatzberg
2025-11-09 18:31 ` [PATCH 03/13] sched_ext: Refactor do_enqueue_task() local and global DSQ paths Tejun Heo
2025-11-10 7:21 ` Andrea Righi
2025-11-09 18:31 ` [PATCH 04/13] sched_ext: Use per-CPU DSQs instead of per-node global DSQs in bypass mode Tejun Heo
2025-11-10 7:42 ` Andrea Righi
2025-11-10 16:42 ` Tejun Heo
2025-11-10 17:30 ` Andrea Righi
2025-11-11 15:31 ` Dan Schatzberg
2025-11-09 18:31 ` [PATCH 05/13] sched_ext: Simplify breather mechanism with scx_aborting flag Tejun Heo
2025-11-10 7:45 ` Andrea Righi
2025-11-11 15:34 ` Dan Schatzberg
2025-11-09 18:31 ` [PATCH 06/13] sched_ext: Exit dispatch and move operations immediately when aborting Tejun Heo
2025-11-10 8:20 ` Andrea Righi
2025-11-10 18:51 ` Tejun Heo
2025-11-11 15:46 ` Dan Schatzberg
2025-11-09 18:31 ` [PATCH 07/13] sched_ext: Make scx_exit() and scx_vexit() return bool Tejun Heo
2025-11-10 8:28 ` Andrea Righi
2025-11-11 15:48 ` Dan Schatzberg
2025-11-09 18:31 ` [PATCH 08/13] sched_ext: Refactor lockup handlers into handle_lockup() Tejun Heo
2025-11-10 8:29 ` Andrea Righi
2025-11-11 15:49 ` Dan Schatzberg
2025-11-09 18:31 ` [PATCH 09/13] sched_ext: Make handle_lockup() propagate scx_verror() result Tejun Heo
2025-11-10 8:29 ` Andrea Righi
2025-11-09 18:31 ` [PATCH 10/13] sched_ext: Hook up hardlockup detector Tejun Heo
2025-11-10 8:31 ` Andrea Righi
2025-11-09 18:31 ` [PATCH 11/13] sched_ext: Add scx_cpu0 example scheduler Tejun Heo
2025-11-10 8:36 ` Andrea Righi
2025-11-10 18:44 ` Tejun Heo
2025-11-10 21:06 ` Andrea Righi
2025-11-10 22:08 ` Tejun Heo
2025-11-09 18:31 ` [PATCH 12/13] sched_ext: Factor out scx_dsq_list_node cursor initialization into INIT_DSQ_LIST_CURSOR Tejun Heo
2025-11-10 8:37 ` Andrea Righi
2025-11-09 18:31 ` [PATCH 13/13] sched_ext: Implement load balancer for bypass mode Tejun Heo
2025-11-10 9:38 ` Andrea Righi
2025-11-10 19:21 ` Tejun Heo
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