Pavel Emelianov wrote:
> Kirill Korotaev wrote:
>
> [snip]
>>> I have a C program that computes limits to obtain desired guarantees
>>> in a single 'for (i = 0; i < n; n++)' loop for any given set of guarantees.
>>> With all error handling, beautifull output, nice formatting etc it weights
>>> only 60 lines.
>
> Look at http://wiki.openvz.org/Containers/Guarantees_for_resources
> I've described there how a guarantee can be get with limiting in details.
>
> [snip]
>
>>> I do not 'do not like guarantee'. I'm just sure that there are two ways
>>> for providing guarantee (for unreclaimable resorces):
>>> 1. reserving resource for group in advance
>>> 2. limit resource for others
>>> Reserving is worse as it is essentially limiting (you cut off 100Mb from
>>> 1Gb RAM thus limiting the other groups by 900Mb RAM), but this limiting
>>> is too strict - you _have_ to reserve less than RAM size. Limiting in
>>> run-time is more flexible (you may create an overcommited BC if you
>>> want to) and leads to the same result - guarantee.
>> I think this deserves putting on Wiki.
>> It is very good clear point.
>
> This is also on the page I gave link at.
The program (calculate_limits()) listed on the website does not work for
the following case
N=2;
R=100;
g[2] = {30, 30};
The output is -10 and -10 for the limits
For
N=3;
R=100;
g[3] = {30, 30, 10};
I get -70, -70 and -110 as the limits
Am I interpreting the parameters correctly? Or the program is broken?
--
Balbir Singh,
Linux Technology Center,
IBM Software Labs
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