From: Ingo Molnar <mingo@elte.hu>
To: Andi Kleen <ak@suse.de>
Cc: Jan Beulich <jbeulich@novell.com>, Andrew Morton <akpm@osdl.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Re: UNWIND_INFO slowdown in -mm1
Date: Wed, 18 Oct 2006 13:01:20 +0200 [thread overview]
Message-ID: <20061018110120.GA32153@elte.hu> (raw)
In-Reply-To: <200610181250.41423.ak@suse.de>
* Andi Kleen <ak@suse.de> wrote:
> > Below patch should help, can you try it out? Short of the linker
> > supporting building a binary lookup table at build time, it creates
> > one as soon as the bootmem allocator is usable (so you'll continue
> > using the linear lookup for the first [hopefully] few calls). The
> > code should be ready to utilize a build-time created table once a
> > fixed linker becomes available.
>
> I added the patch now, thanks.
>
> Not sure this is still .19 material though or better delayed for .20.
> What do you think?
it's a performance regression that results in 3x boot time slowdown.
Ingo
next prev parent reply other threads:[~2006-10-18 11:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060928192048.GA17436@elte.hu>
2006-10-17 15:48 ` Jan Beulich
2006-10-18 8:45 ` Ingo Molnar
2006-10-18 10:50 ` Andi Kleen
2006-10-18 11:01 ` Ingo Molnar [this message]
2006-11-16 17:16 ` -rc6, "DWARF2 unwinder stuck at" Ingo Molnar
2006-11-17 4:57 ` [patch] x86_64: stack unwinder crash fix Ingo Molnar
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