From: Mike Galbraith <efault@gmx.de>
To: Peter Zijlstra <peterz@infradead.org>, Scott Wood <swood@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Mel Gorman <mgorman@suse.de>,
Valentin Schneider <valentin.schneider@arm.com>,
linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v2 3/3] sched/fair: break out of newidle balancing if an RT task appears
Date: Sat, 15 May 2021 10:36:19 +0200 [thread overview]
Message-ID: <752d89013a703a2a4bd32b4be196e84a9065b060.camel@gmx.de> (raw)
In-Reply-To: <284735cfa1b23484cb0aaeb896067cbf888ac6af.camel@gmx.de>
P.S. The largest I spotted before boredom won:
kworker/3:1-22161 [003] d...2.. 11559.111261: load_balance: NEWIDLE rq:4 lock acquired
kworker/0:0-21137 [000] d...1.. 11559.111262: load_balance: NEWIDLE rq:4 locked - aborting
kworker/7:1-20870 [007] d...1.. 11559.111262: load_balance: NEWIDLE rq:4 locked - aborting
<...>-22133 [002] d...1.. 11559.111263: load_balance: NEWIDLE rq:4 locked - aborting
kworker/6:1-22213 [006] d...1.. 11559.111263: load_balance: NEWIDLE rq:4 locked - aborting
5/8 of a 128 rq box meeting like that is.. hopefully impossible :)
-Mike
next prev parent reply other threads:[~2021-05-15 8:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-28 23:28 [PATCH v2 0/3] newidle_balance() PREEMPT_RT latency mitigations Scott Wood
2021-04-28 23:28 ` [PATCH v2 1/3] sched/fair: Call newidle_balance() from balance_callback on PREEMPT_RT Scott Wood
2021-05-05 12:13 ` Vincent Guittot
2021-05-07 15:19 ` Valentin Schneider
2021-04-28 23:28 ` [PATCH v2 2/3] sched/fair: Enable interrupts when dropping lock in newidle_balance() Scott Wood
2021-04-28 23:28 ` [PATCH v2 3/3] sched/fair: break out of newidle balancing if an RT task appears Scott Wood
2021-04-29 4:11 ` kernel test robot
2021-04-29 6:37 ` kernel test robot
2021-05-07 11:03 ` Peter Zijlstra
2021-05-15 7:29 ` Mike Galbraith
2021-05-15 8:36 ` Mike Galbraith [this message]
2021-04-29 7:12 ` [PATCH v2 0/3] newidle_balance() PREEMPT_RT latency mitigations Vincent Guittot
2021-05-01 22:03 ` Scott Wood
2021-05-02 3:25 ` Mike Galbraith
2021-05-03 16:33 ` Scott Wood
2021-05-03 18:52 ` Mike Galbraith
2021-05-03 21:57 ` Scott Wood
2021-05-04 4:07 ` Mike Galbraith
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