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Message-ID: <20090323163838.GA24454@elte.hu>
Date: Mon, 23 Mar 2009 17:38:38 +0100
From: Ingo Molnar <mingo@...e.hu>
To: Miklos Szeredi <miklos@...redi.hu>
Cc: linux-kernel@...r.kernel.org, oleg@...hat.com,
peterz@...radead.org, roland@...hat.com, efault@....de,
rjw@...k.pl, jdike@...toit.com,
user-mode-linux-devel@...ts.sourceforge.net,
torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
stable@...nel.org
Subject: Re: [patch] fix ptrace slowness
* Miklos Szeredi <miklos@...redi.hu> wrote:
> On Mon, 23 Mar 2009, Ingo Molnar wrote:
> > * Miklos Szeredi <miklos@...redi.hu> wrote:
> >
> > > This one incorporates comments from Oleg and Ingo. Please apply
> > > to 2.6.29 and 2.6.2[78]-stable trees.
> >
> > The fix first needs to go upstream. There's an alternative patch
> > below. Would you mind to give it a test? Chances are that it
> > will make UML even faster than your fix.
>
> Just the opposite. With my patch a UML image boots in 17
> seconnds, with your patch it boots in 33 seconds. Without either
> patch it boots in about 5 minutes.
okay - i've queued up your fix.
Ingo
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