Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) client-ip=2620:137:e000::3:4;
Date:   Mon, 4 Dec 2023 13:30:01 -0600
From:   David Vernet <void@manifault.com>
To:     linux-kernel@vger.kernel.org
Cc:     peterz@infradead.org, mingo@redhat.com, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
        rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
        bristot@redhat.com, vschneid@redhat.com, tj@kernel.org,
        roman.gushchin@linux.dev, gautham.shenoy@amd.com,
        kprateek.nayak@amd.com, aaron.lu@intel.com,
        wuyun.abel@bytedance.com, kernel-team@meta.com,
        aboorvad@linux.vnet.ibm.com, yu.c.chen@intel.com
Subject: Re: [PATCH v3 0/7] sched: Implement shared runqueue in CFS
Message-ID: <20231204193001.GA53255@maniforge>
References: <20230809221218.163894-1-void@manifault.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230809221218.163894-1-void@manifault.com>
User-Agent: Mutt/2.2.12 (2023-09-09)
Precedence: bulk

On Wed, Aug 09, 2023 at 05:12:11PM -0500, David Vernet wrote:
> Changes
> -------
> 
> This is v3 of the shared runqueue patchset. This patch set is based off
> of commit 88c56cfeaec4 ("sched/fair: Block nohz tick_stop when cfs
> bandwidth in use") on the sched/core branch of tip.git.
> 
> v1 (RFC): https://lore.kernel.org/lkml/20230613052004.2836135-1-void@manifault.com/
> v2: https://lore.kernel.org/lkml/20230710200342.358255-1-void@manifault.com/

Hello everyone,

I wanted to give an update on this, as I've been promising a v4 of the
patch set for quite some time. I ran more experiments over the last few
weeks, and EEVDF has changed the performance profile of the SHARED_RUNQ
feature quite a bit compared to what we were observing with CFS. We may
pick this back up again at a later point, but for now we're going to
take a step back and re-evaluate.

Thanks,
David