Date: Mon, 27 Apr 2015 15:43:50 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Linux-MM <linux-mm@kvack.org>, Nathan Zimmer <nzimmer@sgi.com>,
        Dave Hansen <dave.hansen@intel.com>, Waiman Long <waiman.long@hp.com>,
        Scott Norton <scott.norton@hp.com>,
        Daniel J Blueman <daniel@numascale.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 08/13] mm: meminit: Initialise remaining struct pages in
 parallel with kswapd
Message-Id: <20150427154350.4d649694a56e5bbc519e1fb4@linux-foundation.org>
In-Reply-To: <1429785196-7668-9-git-send-email-mgorman@suse.de>
References: <1429785196-7668-1-git-send-email-mgorman@suse.de>
	<1429785196-7668-9-git-send-email-mgorman@suse.de>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1057
Lines: 22

On Thu, 23 Apr 2015 11:33:11 +0100 Mel Gorman <mgorman@suse.de> wrote:

> Only a subset of struct pages are initialised at the moment. When this patch
> is applied kswapd initialise the remaining struct pages in parallel. This
> should boot faster by spreading the work to multiple CPUs and initialising
> data that is local to the CPU.  The user-visible effect on large machines
> is that free memory will appear to rapidly increase early in the lifetime
> of the system until kswapd reports that all memory is initialised in the
> kernel log.  Once initialised there should be no other user-visibile effects.
> 
> ...
>
> +	pr_info("kswapd %d initialised deferred memory in %ums\n", nid,
> +					jiffies_to_msecs(jiffies - start));

It might be nice to tell people how much deferred memory kswapd
initialised.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/