From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: Make yield_task_fair more efficient
Date: Thu, 21 Feb 2008 15:12:55 +0530 [thread overview]
Message-ID: <47BD479F.6070901@linux.vnet.ibm.com> (raw)
In-Reply-To: <1203586980.6243.124.camel@lappy>
Peter Zijlstra wrote:
> On Thu, 2008-02-21 at 15:01 +0530, Balbir Singh wrote:
>
>> I have an alternate approach in mind (that I need to find time for),
>> threaded-rbtrees. Walking the tree is really efficient, specially finding
>> successor of a node.
>
> Threading the rbtrees would be even more expensive, it would require a
> list_head in each node and a full list operation for every tree
> operation.
>
Peter, when I say threaded, I don't mean threaded as in tasks. Please see
http://www.nist.gov/dads/HTML/threadedtree.html and
http://datastructures.itgo.com/trees/tbt.htm
--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL
next prev parent reply other threads:[~2008-02-21 9:48 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-21 5:33 Make yield_task_fair more efficient Balbir Singh
2008-02-21 6:04 ` Ingo Molnar
2008-02-21 6:51 ` Balbir Singh
2008-02-21 7:07 ` Ingo Molnar
2008-02-21 7:39 ` Balbir Singh
2008-02-21 8:43 ` Peter Zijlstra
2008-02-21 8:50 ` Balbir Singh
2008-02-21 9:04 ` Ingo Molnar
2008-02-21 9:31 ` Balbir Singh
2008-02-21 9:42 ` Ingo Molnar
2008-02-21 9:44 ` Balbir Singh
2008-02-21 9:43 ` Peter Zijlstra
2008-02-21 9:42 ` Balbir Singh [this message]
2008-02-21 10:01 ` Peter Zijlstra
2008-02-21 10:07 ` Balbir Singh
2008-02-21 11:12 ` Peter Zijlstra
2008-02-21 11:27 ` Balbir Singh
2008-02-21 20:38 ` Jens Axboe
2008-02-21 20:55 ` Jens Axboe
2008-02-22 3:27 ` Balbir Singh
2008-02-21 10:17 ` Balbir Singh
2008-02-21 12:02 ` Mike Galbraith
2008-02-21 12:06 ` Mike Galbraith
2008-02-21 13:29 ` Balbir Singh
2008-02-21 14:38 ` Jörn Engel
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