linux-kernel - Re: [bisected] pty performance problem

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Message-ID: <20091123115949.29bcf89d@lxorguk.ukuu.org.uk>
Date:	Mon, 23 Nov 2009 11:59:49 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Mike Galbraith <efault@....de>, Robert Swan <swan.r.l@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [bisected] pty performance problem

> > Another possibility is to do
> > 
> > 	if (tty->low_latency)
> > 		schedule_delayed_work(&tty->buf.work, 0);
> > 	else
> > 		schedule_delayed_work(&tty->buf.work, 1);
> 
> Flaggery for low latency is kind of lame though - especially if it 
> defaults to off in most drivers as you say.

So you'd prefer to detect devices that are byte based or message based by
what method ?

Alan
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