linux-kernel - Re: rt14: strace -> migrate_disable

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Message-ID: <1316691107.31429.6.camel@twins>
Date:	Thu, 22 Sep 2011 13:31:47 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mike Galbraith <efault@....de>
Cc:	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Miklos Szeredi <miklos@...redi.hu>, mingo <mingo@...hat.com>
Subject: Re: rt14: strace ->  migrate_disable_atomic imbalance

On Thu, 2011-09-22 at 12:00 +0200, Peter Zijlstra wrote:
> OK, this one seems to be better.. But its quite vile, not sure I
> actually like it anymore.
> 
There's also a small matter of it actually being slower than what we had
when tested with: strace hackbench > /dev/null 2>&1.

curses.. even adding a busy wait on p->on_cpu in front.


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