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Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) [message #6197 is a reply to message #6163]

Mon, 11 September 2006 18:44

Chandra Seetharaman is currently offline

Chandra Seetharaman
Messages: 88
Registered: August 2006

Member

On Mon, 2006-09-11 at 10:56 +0400, Pavel Emelianov wrote:

<snip>

> >> I think of it as: "I will be allowed to use this many total pages, and
> >> they are guaranteed not to fail." (1), I think. The sum of all of the
> >> system's guarantees must be less than or equal to the amount of free
> >> memory on the machine.
> >
> > Yes, totally agree.
>
> Such a guarantee is really a limit and this limit is even harder than
> BC's one :)
>
> E.g. I have a node with 1Gb of ram and 10 containers with 100Mb
> guarantee each.

In the first place system administrator should not be configuring it
that way, Then they are using it as a strict hard limit than guarantee
(as the resources guaranteed to one container is _not_ available to
others).

Besides, the above configuration is clearly _not_ work conservative.

They should use both guarantee and limit to associate resources to a
container/RG.

> I want to start one more. What shall I do not to break guarantees?

CKRM/RG handles it this way:

Amount of a resource a child RG gets is the ratio of its share value to
the parent's total # of shares. Children's resource allocation can be
changed just by changing the parent's total # of shares.

If you case about initial situation would be:
Total memory in the system 100MB
parent's total # of shares: 100 (1 share == 1MB)
10 children with # of shares: 10 (i.e each children has 10MB)

When I want to add another child, just change parent's total # of shares
to be say 125:
Total memory in the system 100MB
parent's total # of shares: 125 (1 share == 0.8MB)
10 children with # of shares: 10 (i.e each children has 8MB)
Now you are left with 25 shares (or 20MB) that you can assign to new
child(ren) as you please.

<snip>
--

------------------------------------------------------------ ----------
Chandra Seetharaman | Be careful what you choose....
- sekharan@us.ibm.com | .......you may get it.
------------------------------------------------------------ ----------

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[Message index]

		[PATCH] BC: resource beancounters (v4) (added user memory) By: dev on Tue, 05 September 2006 14:59
		[PATCH 1/13] BC: introduce atomic_dec_and_lock_irqsave() By: dev on Tue, 05 September 2006 15:16
		[PATCH 2/13] BC: kconfig By: dev on Tue, 05 September 2006 15:16
		[PATCH 3/17] BC: beancounters core (API) By: dev on Tue, 05 September 2006 15:17
		[PATCH 4/13] BC: context inheriting and changing By: dev on Tue, 05 September 2006 15:19
		[PATCH 5/13] BC: user interface (syscalls) By: dev on Tue, 05 September 2006 15:21
		Re: [ckrm-tech] [PATCH 5/13] BC: user interface (syscalls) By: Balbir Singh on Tue, 05 September 2006 16:04
		Re: [ckrm-tech] [PATCH 5/13] BC: user interface (syscalls) By: Pavel Emelianov on Wed, 06 September 2006 08:29
		Re: [ckrm-tech] [PATCH 5/13] BC: user interface (syscalls) By: Balbir Singh on Wed, 06 September 2006 08:57
		Re: [ckrm-tech] [PATCH 5/13] BC: user interface (syscalls) By: Pavel Emelianov on Wed, 06 September 2006 10:42
		Re: [ckrm-tech] [PATCH 5/13] BC: user interface (syscalls) By: Balbir Singh on Wed, 06 September 2006 13:23
		Re: [ckrm-tech] [PATCH 5/13] BC: user interface (syscalls) By: Balbir Singh on Wed, 06 September 2006 13:45
		Re: [ckrm-tech] [PATCH 5/13] BC: user interface (syscalls) By: dev on Wed, 06 September 2006 14:20
		[PATCH 6/13] BC: kernel memory (core) By: dev on Tue, 05 September 2006 15:21
		[PATCH 7/13] BC: kernel memory (marks) By: dev on Tue, 05 September 2006 15:23
		Re: [PATCH 7/13] BC: kernel memory (marks) By: Cedric Le Goater on Wed, 06 September 2006 14:19
		[PATCH 8/13] BC: locked pages (core) By: dev on Tue, 05 September 2006 15:24
		[PATCH 9/13] BC: locked pages (charge hooks) By: dev on Tue, 05 September 2006 15:25
		Re: [PATCH 9/13] BC: locked pages (charge hooks) By: Nick Piggin on Wed, 06 September 2006 03:43
		Re: [PATCH 9/13] BC: locked pages (charge hooks) By: Pavel Emelianov on Wed, 06 September 2006 08:45
		Re: [PATCH 9/13] BC: locked pages (charge hooks) By: Nick Piggin on Wed, 06 September 2006 09:41
		Re: [ckrm-tech] [PATCH 9/13] BC: locked pages (charge hooks) By: dev on Wed, 06 September 2006 14:16
		[PATCH 10/13] BC: privvm pages By: dev on Tue, 05 September 2006 15:26
		[PATCH 11/13] BC: vmrss (preparations) By: dev on Tue, 05 September 2006 15:28
		Re: [PATCH 11/13] BC: vmrss (preparations) By: Cedric Le Goater on Tue, 05 September 2006 22:09
		Re: [PATCH 11/13] BC: vmrss (preparations) By: dev on Wed, 06 September 2006 13:56
		Re: [ckrm-tech] [PATCH 11/13] BC: vmrss (preparations) By: Balbir Singh on Thu, 07 September 2006 16:28
		[PATCH 12/13] BC: vmrss (core) By: dev on Tue, 05 September 2006 15:28
		[PATCH 13/13] BC: vmrss (charges) By: dev on Tue, 05 September 2006 15:29
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Tue, 05 September 2006 16:53
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Wed, 06 September 2006 08:34
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: dev on Wed, 06 September 2006 13:04
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Wed, 06 September 2006 19:17
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 06 September 2006 22:06
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Thu, 07 September 2006 03:08
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Fri, 08 September 2006 07:33
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Dave Hansen on Fri, 08 September 2006 15:43
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Fri, 08 September 2006 18:26
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Mon, 11 September 2006 06:56
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Mon, 11 September 2006 07:54
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Mon, 11 September 2006 08:13
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Mon, 11 September 2006 08:19
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 12 September 2006 10:40
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Tue, 12 September 2006 12:01
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Wed, 13 September 2006 13:39
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 12 September 2006 10:39
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Mon, 11 September 2006 10:21
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 12 September 2006 10:35
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 11 September 2006 18:49
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 12 September 2006 10:48
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Tue, 12 September 2006 23:58
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Wed, 13 September 2006 08:06
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Wed, 13 September 2006 12:15
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Wed, 13 September 2006 13:35
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 13 September 2006 22:31
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Thu, 14 September 2006 07:53
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Thu, 14 September 2006 08:06
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Thu, 14 September 2006 13:02
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Fri, 15 September 2006 00:02
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Fri, 15 September 2006 07:21
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: dev on Fri, 15 September 2006 08:46
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 18 September 2006 23:51
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Thu, 14 September 2006 23:42
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Fri, 15 September 2006 07:15
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: dev on Fri, 15 September 2006 08:51
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Fri, 15 September 2006 11:15
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Mon, 18 September 2006 08:25
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Mon, 18 September 2006 08:56
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Mon, 18 September 2006 11:20
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Mon, 18 September 2006 11:32
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Tue, 19 September 2006 00:05
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 19 September 2006 08:04
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Mon, 18 September 2006 11:27
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Mon, 18 September 2006 12:37
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Tue, 19 September 2006 00:08
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 19 September 2006 08:06
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 18 September 2006 23:48
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 11 September 2006 18:44
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: dev on Fri, 15 September 2006 08:53
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 18 September 2006 23:57
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Fri, 08 September 2006 19:23
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Fri, 08 September 2006 21:43
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 11 September 2006 18:25
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Mon, 11 September 2006 19:10
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 11 September 2006 19:42
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Mon, 11 September 2006 23:58
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Tue, 12 September 2006 09:53
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Tue, 12 September 2006 23:54
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Wed, 13 September 2006 00:39
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 13 September 2006 01:10
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Wed, 13 September 2006 01:25
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Wed, 13 September 2006 04:41
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 13 September 2006 22:20
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Thu, 14 September 2006 01:22
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Thu, 14 September 2006 23:13
		Re: Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: kir on Mon, 11 September 2006 19:47
		Re: Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Tue, 12 September 2006 00:28
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Tue, 12 September 2006 10:44
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Tue, 12 September 2006 17:22
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Tue, 12 September 2006 17:40
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 13 September 2006 00:02
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Wed, 13 September 2006 00:43
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 13 September 2006 01:13
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 06 September 2006 21:47
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Dave Hansen on Fri, 08 September 2006 15:33
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Dave Hansen on Tue, 05 September 2006 17:46
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Balbir Singh on Tue, 05 September 2006 18:28
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Wed, 06 September 2006 00:17
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Dave Hansen on Fri, 08 September 2006 15:30
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Rohit Seth on Fri, 08 September 2006 17:10
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Shailabh Nagar on Fri, 08 September 2006 17:26
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: dev on Wed, 06 September 2006 13:54
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Wed, 06 September 2006 21:54
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Thu, 07 September 2006 07:29
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Thu, 07 September 2006 19:16
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Fri, 08 September 2006 07:22
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Fri, 08 September 2006 19:07
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Mon, 11 September 2006 07:02
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Mon, 11 September 2006 13:04
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 12 September 2006 10:24
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Tue, 12 September 2006 10:29
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Tue, 12 September 2006 11:06
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Srivatsa Vaddagiri on Tue, 12 September 2006 12:04
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Mon, 11 September 2006 18:47
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Thu, 07 September 2006 19:29
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Pavel Emelianov on Fri, 08 September 2006 07:26
		Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) By: Chandra Seetharaman on Fri, 08 September 2006 19:10

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