xfs
[Top] [All Lists]

Re: RT and XFS

To: Ingo Molnar <mingo@xxxxxxx>
Subject: Re: RT and XFS
From: Daniel Walker <dwalker@xxxxxxxxxx>
Date: Fri, 15 Jul 2005 09:16:55 -0700
Cc: Dave Chinner <dgc@xxxxxxx>, Nathan Scott <nathans@xxxxxxx>, Steve Lord <lord@xxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx, Christoph Hellwig <hch@xxxxxxxxxxxxx>
In-reply-to: <20050715102311.GA5302@elte.hu>
References: <1121209293.26644.8.camel@dhcp153.mvista.com> <20050713002556.GA980@frodo> <20050713064739.GD12661@elte.hu> <1121273158.13259.9.camel@c-67-188-6-232.hsd1.ca.comcast.net> <20050714002246.GA937@frodo> <20050714135023.E241419@melbourne.sgi.com> <1121314226.14816.18.camel@c-67-188-6-232.hsd1.ca.comcast.net> <20050715102311.GA5302@elte.hu>
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Fri, 2005-07-15 at 12:23 +0200, Ingo Molnar wrote:
> * Daniel Walker <dwalker@xxxxxxxxxx> wrote:
> 
> > PI is always good, cause it allows the tracking of what is high 
> > priority , and what is not .
> 
> that's just plain wrong. PI might be good if one cares about priorities 
> and worst-case latencies, but most of the time the kernel is plain good 
> enough and we dont care. PI can also be pretty expensive. So in no way, 
> shape or form can PI be "always good".

I don't agree with that. But of course I'm always speaking from a real
time perspective . PI is expensive , but it won't always be. However, no
one is forcing PI on anyone, even if I think it's good ..

Daniel


<Prev in Thread] Current Thread [Next in Thread>