Date: Wed, 15 Apr 2015 16:27:31 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Waiman Long <waiman.long@hp.com>
Cc: Mel Gorman <mgorman@suse.de>, Linux-MM <linux-mm@kvack.org>,
        Robin Holt <holt@sgi.com>, Nathan Zimmer <nzimmer@sgi.com>,
        Daniel Rahn <drahn@suse.com>, Davidlohr Bueso <dbueso@suse.com>,
        Dave Hansen <dave.hansen@intel.com>, Tom Vaden <tom.vaden@hp.com>,
        Scott Norton <scott.norton@hp.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 0/14] Parallel memory initialisation
Message-ID: <20150415142731.GI17717@twins.programming.kicks-ass.net>
References: <1428920226-18147-1-git-send-email-mgorman@suse.de>
 <552E6486.6070705@hp.com>
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On Wed, Apr 15, 2015 at 09:15:50AM -0400, Waiman Long wrote:
> I had included your patch with the 4.0 kernel and booted up a 16-socket
> 12-TB machine. I measured the elapsed time from the elilo prompt to the
> availability of ssh login. Without the patch, the bootup time was 404s. It
> was reduced to 298s with the patch. So there was about 100s reduction in
> bootup time (1/4 of the total).

But you cheat! :-)

How long between power on and the elilo prompt? Do the 100 seconds
matter on that time scale?
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