linux-kernel - Re: [GIT PULL rcu/urgent] Adjust SRCU auto-expedite default delay

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Message-ID: <20170428062101.pkvuc2qgwzeep2af@gmail.com>
Date:   Fri, 28 Apr 2017 08:21:01 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:     linux-kernel@...r.kernel.org, efault@....de,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [GIT PULL rcu/urgent] Adjust SRCU auto-expedite default delay


* Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:

> Hello, Ingo,
> 
> This series adds a small change to yesterday's pull request, namely
> changing the default value of the srcutree.exp_holdoff kernel boot
> parameter from 50 microseconds to 25 microseconds.  This change completely
> eliminates the performance shortfall that Mike Galbraith observed.
> This commit is available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/urgent
> 
> for you to fetch changes up to b5fe223a4bd0217a657ff084e48752c367a8a55f:
> 
>   srcu: Adjust default auto-expediting holdoff (2017-04-27 08:35:24 -0700)
> 
> ----------------------------------------------------------------
> Paul E. McKenney (1):
>       srcu: Adjust default auto-expediting holdoff
> 
>  kernel/rcu/srcutree.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Pulled, thanks a lot Paul!

	Ingo