1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Allocated capacity calculation

  1. Nov 18, 2004 #1
    :shy: Can anyone help? I have an interesting issue. I've chosen to study maths and computer science and one of the problems I've been asked to solve, potentially using a 3D Modeling formula is:

    In a Shared Server environment, where total capacity of a server is measured by total CPU capacity, total disk capacity and total memory capacity, I need a formula to help me understand how much each user is requesting of the total capacity.

    By example:
    On a single server total CPU is 2.88 Ghz, 16Gb Memory and 146Gb of Disk Space.
    I have a user who only wants to use 1Ghz CPU, 2Gb Mem and 2Gb of Disk Space. What formula can I use that tells me what percentage of the total capacity of the machine this person is requiring?

    thanks for any help
  2. jcsd
  3. Nov 20, 2004 #2
    A pretty naive formula i can think of is,
    Normalise each variable and multiply them up and multiply by 100 ...

    In your example, this would mean,
    (1/2.88 * 2/16 * 2/146)*100

    A much more precision in analysis may be obtained if we add some factors,
    (1/2.88 * (x+2/16) * (y+2/146))*100

    where x(<=1) and y(<=1) are factors that may be manually adjusted to suit the requirements. (The x and y factors are added because disk space requirements are harsher than physical memory requirements and much much harsher than CPU requirements)

    -- AI
    P.S -> You prolly should have posted this in software section where u could have got a few more answers.
  4. Nov 20, 2004 #3

    thanks for the reply. At least I have some idea now but I'll post in the software section as well.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook