cpu core Virtualization help

woodzy · 04-13-2011, 05:13 AM

i have a remote VPS far away from my home and id like to know if theres a way to turn its 6 cores in to err, 3 and in turn dubbleing the power of the 3 cores buy useing the extra power from the outher 3 cores.
ubuntu 10_10 server, core-ftp and putty to work with here for an interface. openjdk6
6 cores
4 GB ram
50GB harddrive
need more info tell what you need
any help with this would be super thanks

stickman · 04-13-2011, 11:42 PM

What is the problem that you are trying to solve?

woodzy · 04-14-2011, 06:12 PM

im trying to give this java program mopre cpu power and i cant recode the program (dont know how).
its not multi cored. so i want to emulate multi cores to be one core so the one emulated core would have more power

TobiSGD · 04-14-2011, 06:22 PM

That is logically impossible. If your program is not multithreaded, which means it runs only on one core, the only thing you can do to speed it up is to use a processor with higher clock frequency.

jefro · 04-14-2011, 07:47 PM

Change priority of the vm or app or parts of to real time or just below it?

syg00 · 04-14-2011, 11:13 PM

Quote:

Originally Posted by TobiSGD

That is logically impossible.

No it ain't. In a virtual environment it is quite possible to assign less than 100% of an engine to a guest. Simple enough to change the allocation and charge the client more - up to the physical capacity of the engine(s).
Of course the percentage is actually of time not of the engine itself, but that applies to all CPU% measurements.

As mentioned, multi-threaded code is the obvious answer all round

woodzy · 04-15-2011, 04:50 AM

Quote:

Originally Posted by jefro

Change priority of the vm or app or parts of to real time or just below it?

didnt work, any outher ideas?

TobiSGD · 04-15-2011, 06:04 AM

Quote:

Originally Posted by syg00

No it ain't. In a virtual environment it is quite possible to assign less than 100% of an engine to a guest. Simple enough to change the allocation and charge the client more - up to the physical capacity of the engine(s).
Of course the percentage is actually of time not of the engine itself, but that applies to all CPU% measurements.

As mentioned, multi-threaded code is the obvious answer all round

I should have made it clearer. What I wanted to say is that is is impossible to generate one virtual core that is faster because there are other cores in the machines, like 1 virtual core with 6 GHz, just because there are two physical cores with 3 GHz. That is what I understood the OP wants to achieve, that won't work.

woodzy · 04-15-2011, 08:19 PM

all right, then how do i get more Err :/ ummm, power per cpu core on a VPS? i have heard of it beeing done but i cant find out how it was done. all i know is that 6 cpu cores were combined in to 3 cores.

syg00 · 04-15-2011, 11:07 PM

Talk to the vendor. Presumably they offer packages - you might have to move to a different platform to get bigger engines.
Might be do-able on your current plan, depends.

Either way, bet it's going to cost you.

stickman · 04-16-2011, 11:36 AM

You might want to see what it would take to re-architect your app. If you're going to spend money, be sure to check all your options.

woodzy · 04-20-2011, 12:06 AM

well my vender sayed thay wont help me, im on my own here :/
i need to turn 6 cores in to 2 cores with therr GHZ combined in to the EMULATED 2 cores

stickman · 04-20-2011, 11:48 PM

Ok. Of the 6 virtual CPUs that you have, do you know what their share of a physical CPU is? Also,go to the sources where you've heard about this being done, and ask them how they did it.

jefro · 04-22-2011, 05:25 PM

Then you need a virtual machine that is using all 6 cores (many are fully smp) and make a VM that has 2 cores. That is then only way I know of to use 6 to act as two.