From: Steven Rostedt <rostedt@goodmis.org>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Enrico Mioso <mrkiko.rs@gmail.com>,
linux-kernel@vger.kernel.org,
Josh Triplett <josh@joshtriplett.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: Re: INFO: rcu_sched self-detected stall on CPU
Date: Wed, 4 Jan 2017 09:16:31 -0500 [thread overview]
Message-ID: <20170104091631.78af9d45@gandalf.local.home> (raw)
In-Reply-To: <20170104134608.GJ3742@linux.vnet.ibm.com>
On Wed, 4 Jan 2017 05:46:08 -0800
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
> I suggest enabling tracing for timers with a goal of working out why
> the rcu_sched task is not being awakened regularly -- during a grace
> period, it should be awakened every three jiffies or so (depending on
> the value of HZ).
Perhaps enable events for rcu, sched and irqs as well?
-- Steve
next prev parent reply other threads:[~2017-01-04 14:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-04 9:58 Enrico Mioso
2017-01-04 13:46 ` Paul E. McKenney
2017-01-04 14:16 ` Steven Rostedt [this message]
2017-01-04 15:35 ` Enrico Mioso
2017-01-04 16:17 ` Paul E. McKenney
2017-01-04 20:59 ` Enrico Mioso
2017-01-06 7:47 ` Paul E. McKenney
2017-01-05 18:32 ` Enrico Mioso
2017-01-06 7:48 ` Paul E. McKenney
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