From: Pavel Machek <pavel@ucw.cz>
To: Joerg Roedel <joro@8bytes.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <len.brown@intel.com>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/6] PM / Hibernate: Memory bitmap scalability improvements
Date: Sat, 19 Jul 2014 15:49:04 +0200 [thread overview]
Message-ID: <20140719134904.GA2852@amd.pavel.ucw.cz> (raw)
In-Reply-To: <1405684643-30234-1-git-send-email-joro@8bytes.org>
Hi!
> These patches improve the data structure by adding a radix
> tree to the linked list structure to improve random access
> performance from O(n) to O(log_b(n)), where b depends on the
> architecture (b=512 on amd64, 1024 in i386).
Are you sure? From your other mail, you said you are adding just a
single page. I'd expect random access performance to go from
O(n) to O(n/1024) in such case?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2014-07-19 13:49 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-18 11:57 Joerg Roedel
2014-07-18 11:57 ` [PATCH 1/6] PM / Hibernate: Create a Radix-Tree to store memory bitmap Joerg Roedel
2014-07-19 0:00 ` Rafael J. Wysocki
2014-07-19 7:57 ` Joerg Roedel
2014-07-18 11:57 ` [PATCH 2/6] PM / Hibernate: Add memory_rtree_find_bit function Joerg Roedel
2014-07-18 11:57 ` [PATCH 3/6] PM / Hibernate: Implement position keeping in radix tree Joerg Roedel
2014-07-18 11:57 ` [PATCH 4/6] PM / Hibernate: Iterate over set bits instead of PFNs in swsusp_free() Joerg Roedel
2014-07-18 11:57 ` [PATCH 5/6] PM / Hibernate: Remove the old memory-bitmap implementation Joerg Roedel
2014-07-18 11:57 ` [PATCH 6/6] PM / Hibernate: Touch Soft Lockup Watchdog in rtree_next_node Joerg Roedel
2014-07-18 22:05 ` [PATCH 0/6] PM / Hibernate: Memory bitmap scalability improvements Rafael J. Wysocki
2014-07-19 7:55 ` Joerg Roedel
2014-07-19 10:26 ` Pavel Machek
2014-07-19 11:35 ` Joerg Roedel
2014-07-19 13:49 ` Pavel Machek [this message]
2014-07-21 8:32 ` Joerg Roedel
2014-07-21 11:45 ` Pavel Machek
2014-07-21 14:29 ` Joerg Roedel
2014-07-21 14:39 ` Pavel Machek
2014-07-21 15:55 ` Joerg Roedel
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