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Date: Fri, 15 May 2026 08:47:49 -1000
From: Tejun Heo <tj@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	Valentin Schneider <vschneid@redhat.com>,
	K Prateek Nayak <kprateek.nayak@amd.com>,
	Kyle McMartin <jkkm@meta.com>
Subject: Re: [PATCH v2] sched/rt: Have RT_PUSH_IPI be default off for non
 PREEMPT_RT
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References: <20260515103740.25ccbed8@gandalf.local.home>
 <agdVODCkR8lPI535@slm.duckdns.org>
 <20260515143847.543c4b8c@gandalf.local.home>
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In-Reply-To: <20260515143847.543c4b8c@gandalf.local.home>

Hello, Steven.

On Fri, May 15, 2026 at 02:38:47PM -0400, Steven Rostedt wrote:
> Hmm, but I'm guessing that it still was long enough to slow down the
> softirq to trigger it again and prevent scheduling?

Yes, seems that way. I think the load is lower and each softirq invocation
is relatively short (just going through the packets received in the
meantime) but the frequency is higher.

Thanks.

-- 
tejun