linux-kernel - Re: [2.6.18-rc7-mm1] slow boot

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20060929183959.GA13991@elte.hu>
Date:	Fri, 29 Sep 2006 20:39:59 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andi Kleen <ak@...e.de>
Cc:	Jan Beulich <jbeulich@...ell.com>, Andrew Morton <akpm@...l.org>,
	linux-kernel@...r.kernel.org, Randy Dunlap <rdunlap@...otime.net>,
	tilman@...p.cc
Subject: Re: [2.6.18-rc7-mm1] slow boot


* Andi Kleen <ak@...e.de> wrote:

> "Jan Beulich" <jbeulich@...ell.com> writes:
> 
> > There's nothing stack trace/unwind related among the functions listed at all afaics.
> > I don't know much about how profiling works, is it perhaps just missing something?
> 
> Perhaps lockdep calls them with interrupts off? The old profiler 
> doesn't support profiling with interrupts off. oprofile does, but it 
> cannot be used at early boot.

Yes, lockdep does everything that changes the dependency graph(s) with 
irqs off. Jan, i bounced you the mail with the function traces included, 
that should show you the overhead points.

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/