From: Pavel Machek <pavel@ucw.cz>
To: Nigel Cunningham <ncunningham@clear.net.nz>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Faster SWSUSP free page counting
Date: Tue, 18 Mar 2003 09:20:08 +0100 [thread overview]
Message-ID: <20030318082008.GC10472@atrey.karlin.mff.cuni.cz> (raw)
In-Reply-To: <1047944582.1713.5.camel@laptop-linux.cunninghams>
Hi!
> This patch improves the speed of SWSUSP's count_and_copy_data_pages
> function by generating a map of the free pages before iterating through
> the list of pages. The net result is to go from O(n^2) to O(n), if I
> remember my computer science correctly.
Is the speed difference noticable?
If yes than okay, but generate_free_page_map() should still be moved
into kernel/suspend.c.
Pavel
--
Horseback riding is like software...
...vgf orggre jura vgf serr.
next prev parent reply other threads:[~2003-03-18 8:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-17 23:43 Nigel Cunningham
2003-03-18 8:20 ` Pavel Machek [this message]
2003-03-18 10:09 ` Nigel Cunningham
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