From: Tejun Heo <tj@kernel.org>
To: Kent Overstreet <koverstreet@google.com>
Cc: linux-bcache@vger.kernel.org, linux-kernel@vger.kernel.org,
dm-devel@redhat.com, agk@redhat.com
Subject: Re: [Bcache v13 12/16] bcache: Bset code (lookups within a btree node)
Date: Wed, 23 May 2012 13:49:14 -0700 [thread overview]
Message-ID: <20120523204914.GC3933@htj.dyndns.org> (raw)
In-Reply-To: <20120523175544.GC18143@google.com>
On Wed, May 23, 2012 at 10:55:44AM -0700, Tejun Heo wrote:
> How much benefit are we gaining by doing this float thing? Any chance
> we can do something simpler? As long as it's properly encapsulated,
> it shouldn't be too bad but I keep having the suspicion that a lot of
> complexity is added for unnecessary level of optimization.
e.g. how much performance gain does it provide compared to just using
u64 in binary search tree combined with last search result hint for
sequential accesses?
Thanks.
--
tejun
next prev parent reply other threads:[~2012-05-23 20:49 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-10 3:07 [Bcache v13 00/16] Kent Overstreet
2012-05-10 3:08 ` [Bcache v13 01/16] Only clone bio vecs that are in use Kent Overstreet
2012-05-10 21:35 ` [dm-devel] " Vivek Goyal
2012-05-10 21:42 ` Kent Overstreet
2012-05-11 13:29 ` Jeff Moyer
2012-05-11 20:29 ` Kent Overstreet
2012-05-15 16:19 ` Tejun Heo
2012-05-10 3:08 ` [Bcache v13 02/16] Bio pool freeing Kent Overstreet
2012-05-10 21:32 ` [dm-devel] " Vivek Goyal
2012-05-10 21:39 ` Kent Overstreet
2012-05-10 21:52 ` Vivek Goyal
2012-05-10 21:53 ` Kent Overstreet
2012-05-15 16:24 ` Tejun Heo
2012-05-15 16:25 ` Tejun Heo
2012-05-10 3:08 ` [Bcache v13 03/16] Revert "rw_semaphore: remove up/down_read_non_owner" Kent Overstreet
2012-05-15 16:37 ` Tejun Heo
2012-05-15 16:38 ` Tejun Heo
2012-05-10 3:09 ` [Bcache v13 04/16] Fix ratelimit macro to compile in c99 mode Kent Overstreet
2012-05-15 16:43 ` Tejun Heo
2012-05-10 3:09 ` [Bcache v13 05/16] Export get_random_int() Kent Overstreet
2012-05-15 16:44 ` Tejun Heo
2012-05-10 3:09 ` [Bcache v13 06/16] Export blk_fill_rwbs() Kent Overstreet
2012-05-10 3:09 ` [Bcache v13 07/16] Closures Kent Overstreet
2012-05-15 22:41 ` Tejun Heo
2012-05-18 6:29 ` Kent Overstreet
2012-05-18 10:02 ` Alan Cox
2012-05-21 19:40 ` Kent Overstreet
2012-05-10 3:10 ` [Bcache v13 08/16] bcache: Documentation, and changes to generic code Kent Overstreet
2012-05-10 3:10 ` [Bcache v13 09/16] Bcache: generic utility code Kent Overstreet
2012-05-10 19:35 ` Dan Williams
2012-05-10 21:42 ` Kent Overstreet
2012-05-22 21:17 ` Tejun Heo
2012-05-23 3:12 ` Kent Overstreet
2012-05-23 3:36 ` Joe Perches
2012-05-23 4:50 ` [PATCH] Add human-readable units modifier to vsnprintf() Kent Overstreet
2012-05-23 5:10 ` Joe Perches
2012-05-23 5:22 ` Kent Overstreet
2012-05-23 5:42 ` Joe Perches
2012-05-23 6:04 ` Kent Overstreet
2012-05-23 6:12 ` Joe Perches
2012-05-23 5:08 ` [Bcache v13 09/16] Bcache: generic utility code Tejun Heo
2012-05-23 5:54 ` Kent Overstreet
2012-05-23 16:51 ` Tejun Heo
2012-05-23 15:15 ` [dm-devel] " Vivek Goyal
2012-05-23 15:33 ` Kent Overstreet
2012-05-22 21:19 ` Tejun Heo
2012-05-10 3:10 ` [Bcache v13 10/16] bcache: Superblock/initialization/sysfs code Kent Overstreet
2012-05-10 3:10 ` [Bcache v13 11/16] bcache: Core btree code Kent Overstreet
2012-05-22 22:12 ` Tejun Heo
2012-05-23 3:45 ` Kent Overstreet
2012-05-23 5:20 ` Tejun Heo
2012-05-23 5:34 ` Kent Overstreet
2012-05-23 17:24 ` Tejun Heo
2012-05-22 22:40 ` Tejun Heo
2012-05-30 7:47 ` Tejun Heo
2012-05-31 1:09 ` Kent Overstreet
2012-05-10 3:11 ` [Bcache v13 12/16] bcache: Bset code (lookups within a btree node) Kent Overstreet
2012-05-22 22:39 ` Tejun Heo
2012-05-23 4:21 ` Kent Overstreet
2012-05-23 17:55 ` Tejun Heo
2012-05-23 20:49 ` Tejun Heo [this message]
2012-05-24 18:11 ` Tejun Heo
2012-05-10 3:11 ` [Bcache v13 13/16] bcache: Journalling Kent Overstreet
2012-05-10 3:11 ` [Bcache v13 14/16] bcache: Request, io and allocation code Kent Overstreet
2012-05-22 22:42 ` Tejun Heo
2012-05-23 1:44 ` Kent Overstreet
2012-05-23 4:24 ` Kent Overstreet
2012-05-22 22:44 ` Tejun Heo
2012-05-30 7:23 ` Tejun Heo
2012-05-31 0:52 ` Kent Overstreet
2012-05-31 2:43 ` Tejun Heo
2012-05-31 5:13 ` Kent Overstreet
2012-05-31 6:45 ` Tejun Heo
2012-06-01 2:37 ` Tejun Heo
2012-05-31 2:45 ` Tejun Heo
2012-05-30 7:32 ` Tejun Heo
2012-05-10 3:11 ` [Bcache v13 15/16] bcache: Writeback Kent Overstreet
2012-05-10 3:11 ` [Bcache v13 16/16] bcache: Debug and tracing code Kent Overstreet
2012-05-10 13:54 ` [dm-devel] [Bcache v13 00/16] Vivek Goyal
2012-05-10 15:03 ` Vivek Goyal
2012-05-10 15:34 ` Kent Overstreet
2012-05-10 18:34 ` Dan Williams
[not found] ` <1188908028.170.1336674698865.JavaMail.mail@webmail09>
2012-05-10 18:49 ` [Bcache v13 11/16] bcache: Core btree code Joe Perches
2012-05-10 21:48 ` Kent Overstreet
2012-05-18 10:06 ` [Bcache v13 00/16] Arnd Bergmann
2012-05-30 8:29 ` Tejun Heo
2012-05-30 8:54 ` Zhi Yong Wu
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