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From: Dhaval Giani <dhaval@linux.vnet.ibm.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Ryo Tsuruta <ryov@valinux.co.jp>,
	riel@redhat.com, linux-kernel@vger.kernel.org,
	dm-devel@redhat.com, jens.axboe@oracle.com, agk@redhat.com,
	akpm@linux-foundation.org, nauman@google.com,
	guijianfeng@cn.fujitsu.com, jmoyer@redhat.com,
	balbir@linux.vnet.ibm.com
Subject: Re: Regarding dm-ioband tests
Date: Tue, 8 Sep 2009 22:36:49 +0530	[thread overview]
Message-ID: <20090908170649.GC8828@linux.vnet.ibm.com> (raw)
In-Reply-To: <20090908134244.GA15974@redhat.com>

> > - dm-ioband can use without cgroup. (I remember Vivek said it's not an
> >   advantage.)
> 
> I think this is more of a disadvantage than advantage. We have a very well
> defined functionality of cgroup in kernel to group the tasks. Now you are
> coming up with your own method of grouping the tasks which will make life
> even more confusing for users and application writers.
> 

I would tend to agree with this. With other resource management
controllers using cgroups, having dm-ioband use something different will
require a different set of userspace tools/libraries to be used.
Something that will severly limit its usefulness froma programmer's
perspective.

thanks,
-- 
regards,
Dhaval

  parent reply	other threads:[~2009-09-08 17:07 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-01 16:50 Vivek Goyal
2009-09-01 17:47 ` Vivek Goyal
2009-09-03 13:11   ` Vivek Goyal
2009-09-04  1:12     ` Ryo Tsuruta
2009-09-15 21:40       ` dm-ioband fairness in terms of sectors seems to be killing disk (Was: Re: Regarding dm-ioband tests) Vivek Goyal
2009-09-16 11:10         ` dm-ioband fairness in terms of sectors seems to be killing disk Ryo Tsuruta
2009-09-04  4:02 ` Regarding dm-ioband tests Ryo Tsuruta
2009-09-04 23:11   ` Vivek Goyal
2009-09-07 11:02     ` Ryo Tsuruta
2009-09-07 13:53       ` Rik van Riel
2009-09-08  3:01         ` Ryo Tsuruta
2009-09-08  3:22           ` Balbir Singh
2009-09-08  5:05             ` Ryo Tsuruta
2009-09-08 13:49               ` Vivek Goyal
2009-09-09  5:17                 ` Ryo Tsuruta
2009-09-09 13:34                   ` Vivek Goyal
2009-09-08 13:42           ` Vivek Goyal
2009-09-08 16:30             ` Nauman Rafique
2009-09-08 16:47               ` Rik van Riel
2009-09-08 17:54                 ` Vivek Goyal
2009-09-15 23:37                   ` ioband: Writer starves reader even without competitors (Re: Regarding dm-ioband tests) Vivek Goyal
2009-09-16 12:08                     ` ioband: Writer starves reader even without competitors Ryo Tsuruta
2009-09-08 17:06             ` Dhaval Giani [this message]
2009-09-09  6:05               ` Regarding dm-ioband tests Ryo Tsuruta
2009-09-09 10:51                 ` Dhaval Giani
2009-09-10  7:58                   ` Ryo Tsuruta
2009-09-11  9:53                     ` Dhaval Giani
2009-09-15 15:12                       ` Ryo Tsuruta
2009-09-15 15:19                         ` Balbir Singh
2009-09-15 15:58                           ` Rik van Riel
2009-09-15 16:21                           ` Ryo Tsuruta
2009-09-09 13:57                 ` Vivek Goyal
2009-09-10  3:06                   ` Ryo Tsuruta
2009-09-09 10:01             ` Ryo Tsuruta
2009-09-09 14:31               ` Vivek Goyal
2009-09-10  3:45                 ` Ryo Tsuruta
2009-09-10 13:25                   ` Vivek Goyal
2009-09-08 19:24           ` Rik van Riel
2009-09-09  0:09             ` Fabio Checconi
2009-09-09  2:06               ` Vivek Goyal
2009-09-09 15:41                 ` Fabio Checconi
2009-09-09 17:30                   ` Vivek Goyal
2009-09-09 19:01                     ` Fabio Checconi
2009-09-09  9:24               ` Ryo Tsuruta
2009-09-16  4:45       ` ioband: Limited fairness and weak isolation between groups (Was: Re: Regarding dm-ioband tests) Vivek Goyal
2009-09-18  7:33         ` ioband: Limited fairness and weak isolation between groups Ryo Tsuruta

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