Web Hosting Talk : Web Hosting Main Forums : VPS Hosting : speed of burstable ram

[opaliz]

Hi,

My provider told me that

the system emulates the sped of an HDD for burstable ram

and that

it limits access to bring you back to the guaranteed ram

. I think this is bullsh... can anyone confirm?

[Preetam]

It sounds like they're talking about swap but they have no idea what they mean.

[Collabora]

Are those direct quotes?

[opaliz]

I've translated the quotes so good as my English knowledge allows me. The quotes are originally in Spanish.

[henrique-s]

Please, post it in Spanish and I'll translate it to English for you.

[opaliz]

el sistema emula la velocidad de un disco rígido para la memoria burstable, además. limita accesos para llevarte nuevamente al mínimo garantizado

this was the message

[morrisonhosting]

Originally Posted by opaliz

Hi,

My provider told me that and that . I think this is bullsh... can anyone confirm?

That is correct. Most burstable ram is simply virtual ram on a hardd-rive it can only go as fast as the hard-drive and with everyone using it, it's not that fast. That being said, some providers actually give you more ram for short bursts. That is not common though.

-Tyler Morrison

[Orien]

Originally Posted by morrisonhosting

That is correct. Most burstable ram is simply virtual ram on a hardd-rive it can only go as fast as the hard-drive and with everyone using it, it's not that fast. That being said, some providers actually give you more ram for short bursts. That is not common though.

-Tyler Morrison

No, actually that is not true.

[Preetam]

Originally Posted by Orien

No, actually that is not true.

Where are they getting this information?!

[Collabora]

Originally Posted by morrisonhosting

That is correct. Most burstable ram is simply virtual ram on a hardd-rive

Its not supposed to be. It supposed to just let you spike higher than what is guaranteed, if the resource available. If its ram that is guaranteed then its ram that provided during the spike, not emulated ram such as a swap file. If you use up the guaranteed and there is not burstable available then it will go to swap file like systems normally do when no ram available

In my opinion, one should just ignore the burstable feature since you cannot count on the burstable allotment to be available when you need it.

[Orien]

Originally Posted by Collabora

Its not supposed to be. It supposed to just let you spike higher than what is guaranteed, if the resource available. If its ram that is guaranteed then its ram that provided during the spike, not emulated ram such as a swap file.

In my opinion, one should just ignore the burstable feature since you cannot count on the burstable allotment to be available when you need it.

I don't want to sound like a broken record but the following thread will respond to popular misconceptions about what burst RAM is.

http://www.webhostingtalk.com/showthread.php?t=1144691

[opaliz]

Orien: I read that post and I came to the conclusion that there is no difference in speed between guaranteed and burstable. But my provider told me that, in fact, there is a big difference in speed. I think he is wrong, but I wanted to hear other opinions.

Collabora: I think that when there is an Out Of Memory situation, any VPS on the node will run slow because of the high I/O load and I don't want to be on that node...despite I'll still have the guaranteed RAM.

[Orien]

Originally Posted by opaliz

Orien: I read that post and I came to the conclusion that there is no difference in speed between guaranteed and burstable. But my provider told me that, in fact, there is a big difference in speed. I think he is wrong, but I wanted to hear other opinions.

Collabora: I think that when there is an Out Of Memory situation, any VPS on the node will run slow because of the high I/O load and I don't want to be on that node...despite I'll still have the guaranteed RAM.

You are correct. There is no difference between guaranteed and burstable RAM because they are the same thing really.

[Preetam]

Just curious, who's the provider?

[opaliz]

Originally Posted by Preetam

Just curious, who's the provider?

I have a good relation with "the provider" . Sorry, but I'll prefer to keep it private.

I have the option to go "1GB guaranteed" or "512Mb guaranteed + 6GB burstable", I think the 2nd option is better, but I want to be sure that the burstable Ram is not slow. Anyway, I think my VPS will run most of the time below the 512Mb limit, but I don't want it to run slow if more RAM is needed.