asking for idea about cloud technology feed

[steven_elvisda]

Dear All,

Below is my fully specification of my server:

CPU 3.30GHz Core 4, Thread 8
RAM 32GB
HDD 2TB SATA III
Cloud Linux + Cpanel
Apache + php fcgi + Eaccelerator

Default Cloud configuration

CPU 25%
nCPU 1
vmem 1024MB
pmem 1024MB
EP 20
nPROC 20
I/O Limit 1024KB/s

can all of you help me to estimate
how many client could I host on this server.

due Im new with cloud linux technology.

Best Regards,
Steve.

[clm]

Hi,

25% is of the total CPU ressources.

Youve got 8 x 3.3GHz theads how much CPU to you want to allow each user ?

the nCPU is how many threads each user can use, so youre actually limiting your users to 1CPU and not 25% (100% / 8 = 12.5%)
Some hosts set the limit around 1Ghz others 2 or more… Id try setting your CPU limits between 6 and 8%

The number of sites you will be able to host will depend on how much ressources each site uses.

The answer is anything between 100 and 1000 sites…

[steven_elvisda]

Hello Richard Hordern,

currently, I use default of clould linux which had been set, and just increase I/O limit to 5120KBps.

thanks for reply me Richard,

[clm]

I was just saying that if you set ncpu to 1 then 12.5% CPU is the maximum you will be able to use and not 25% in order to use 25% you need to set ncpu to 2

The default setting of 25% is for smaller servers then yours.

[steven_elvisda]

hooo,

sorry that is confusing for me how to use cpu percentage.

[clm]

Yes, its not easy to understand at first

At the moment 100% is all of your CPUs added together

In the future 100% will be 1 CPU

For the moment you have to decide how much CPU you want to allow each site to use (1CPU, 1/2CPU…) and then work out the percentage based on how many cores you have got.

If you want to allow 1/2 a CPU

You have got 8 CPUs

8 CPUs => 100%
1 CPU => 100/8 = 12.5%
0.5CPU => 6.25%

You can only use 1% intervals so currently you would either choose 6% or 7%

In the future you will be able to choose 50% for half a CPU. It should make things a bit easier and it will make things more accurate when we have many CPUs on a server.

Another example, if for a site you want to allow 2CPUs you would set :

Percentage : 25 %
nCPU : 2

If you want to allow 30% of total CPU you would have to set :

Percentage : 30 %
nCPU : 3

This is because 2CPUs represent 25% so to give access to the remaining 5% you would need to give access to a third CPU.

[steven_elvisda]

Hello Richard Hordern,

very thanks your so much for your detail explain.

Best Regards,
Steve.

[steven_elvisda]

hello Richard, could you give me detail when it is 100 sites and when it will be 1000 sites? sorry for dummy question.