How can i lower rendering particles?

I want to make a carpet by using particles. But when i start rendering it takes too long 3h. which is very long time. adding less particles on my carpet i can see empty spaces so i need to add more particles to cover them up. Also i play with settings of particles example i change the diameter make the particles more shaggy etc and i use interpolated. But very long time to render. Is there any solution for this?

Hi,

So you want to cover all of your mesh but at the same time having not so many of particles?

Check out this one tutorial. Maybe it will help you with that:

Maybe you just did something wrong and that caused to long time rendering of your scene