From: Peter Zijlstra <peterz@infradead.org>
To: GeHao Kang <kanghao0928@gmail.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>,
fweisbec@gmail.com, linux-api@vger.kernel.org,
linux-kernel@vger.kernel.org, tglx@linutronix.de,
mingo@kernel.org, paulmck@linux.vnet.ibm.com
Subject: Re: Context switch latency in tickless isolated CPU
Date: Fri, 19 Aug 2016 14:34:37 +0200 [thread overview]
Message-ID: <20160819123437.GE10121@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <CANv7uPSwu=nxYYjWQFABcyj6ZpAemHyXbn4JnZ6WaVJQd3RX4A@mail.gmail.com>
On Thu, Aug 18, 2016 at 11:25:00AM +0800, GeHao Kang wrote:
> Is the increased time fixed in each context switch? Because this increased time
> will be the latency of the real time application, we hope to confirm it.
> Thanks.
Why are you wanting to use nohz_full if you do syscalls?
next prev parent reply other threads:[~2016-08-19 12:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-17 6:26 Context switch latency in tickless isolated CPU GeHao Kang
2016-08-17 12:18 ` Chris Metcalf
2016-08-18 3:25 ` GeHao Kang
2016-08-19 12:34 ` Peter Zijlstra [this message]
2016-08-21 11:26 ` GeHao Kang
2016-08-21 14:53 ` Paul E. McKenney
2016-08-22 9:40 ` GeHao Kang
2016-08-22 14:48 ` Paul E. McKenney
2016-08-22 15:12 ` Mark Hounschell
2016-08-22 15:37 ` Paul E. McKenney
2016-08-22 16:35 ` Mark Hounschell
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