linux-kernel - Re: [ckrm-tech] About I/O scheduler in CKRM

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Message-ID: <20070419141244.GC13192@in.ibm.com>
Date:	Thu, 19 Apr 2007 19:42:44 +0530
From:	Srivatsa Vaddagiri <vatsa@...ibm.com>
To:	Zongyun Lai <zlai.zju@...il.com>
Cc:	sekharan@...ibm.com, nagar@...son.ibm.com,
	ckrm-tech@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [ckrm-tech] About I/O scheduler in CKRM

I am not aware of any updates to IO scheduler other than what is listed
on the website. Chandra/Shailabh can correct me if I am wrong.

Regarding (the future of) CKRM in general, we aren't looking at
that framework now, as Linux kernel community seemed to want simpler
frameworks. A framework which is being considered for inclusion
(hopefully in near future) will be based on this:

	http://lkml.org/lkml/2007/4/6/297


On Thu, Apr 19, 2007 at 03:09:17PM +0800, Zongyun Lai wrote:
> Hello, 
>     I am currently doing something related to storage QoS. I have read the OLS 
> papers of CKRM project. I think it would be good start point for CBQ(class 
> based queuing) scheduler in storage system. However, when I refer to the code 
> in ckrm.sf.net, I found only recent release of cpurc, memrc, and res_group 
> code, isn't it? The only io related work is the io_rc.tar.bz2 located in 
> ckrm-old branch (e18 against 2.6.12). It looks like it is based on Jens' CFQ 
> scheduler. Do you still actively maintain this ckrm project? Is there any 
> recent release of the IO scheduler, or what is the future consideration in 
> developing the IO scheduer? Thanks. 
> 
> 
> Cheers , 
>         Zongyun
> 
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-- 
Regards,
vatsa
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