From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Alexander Monakov <amonakov@gmail.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>,
linux-acpi@vger.kernel.org,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-kernel@vger.kernel.org, Len Brown <lenb@kernel.org>,
Tom Boshoven <tomboshoven@gmail.com>,
x86@kernel.org, Josh Triplett <josh@joshtriplett.org>
Subject: Re: [PATCH] ACPI/osl: speedup grace period in acpi_os_map_cleanup
Date: Sat, 8 Nov 2014 16:51:24 -0800 [thread overview]
Message-ID: <20141109005124.GG4901@linux.vnet.ibm.com> (raw)
In-Reply-To: <CABtfrpDryV5XEzBOttTuGZ7Tvyy4QUo1pajvO07=6tpozjVLzQ@mail.gmail.com>
On Sun, Nov 09, 2014 at 03:24:34AM +0400, Alexander Monakov wrote:
> On Sun, Nov 9, 2014 at 1:13 AM, Paul E. McKenney
> <paulmck@linux.vnet.ibm.com> wrote:
> >
> > Did anyone try replacing the synchronize_rcu() with
> > synchronize_rcu_expedited()? That should provide substantial speedups
> > over synchronize_rcu().
>
> I've just briefly tested it on my laptop, and it also helps to avoid the issue.
OK, good.
In the past, synchronize_rcu_expedited() has been a bit unfriendly to
battery-powered platforms and to real-time and HPC workloads, but
recent changes for the most part fix this.
Thanx, Paul
next prev parent reply other threads:[~2014-11-09 0:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-08 8:47 [PATCH] ACPI/osl: speedup grace period in acpi_os_map_cleanup Konstantin Khlebnikov
2014-11-08 22:13 ` Paul E. McKenney
2014-11-08 23:24 ` Alexander Monakov
2014-11-09 0:51 ` Paul E. McKenney [this message]
2014-11-09 11:04 ` Konstantin Khlebnikov
2014-11-09 9:53 ` [PATCH v2] " Konstantin Khlebnikov
2014-11-09 22:00 ` Paul E. McKenney
2014-11-14 22:48 ` Rafael J. Wysocki
2014-11-14 15:52 ` joeyli
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