Re: [Nbd] NBD vs iSCSI performance?

[Ming Zhang <blackmagic02881@...17...>]

On Tue, 2007-05-22 at 21:36 +0200, Tomasz Chmielewski wrote:
> Ming Zhang schrieb:
> > On Wed, 2007-05-16 at 13:39 +0200, Tomasz Chmielewski wrote:
> >> I was wondering if anyone ever did a performance comparison of NBD 
> >> versus iSCSI?
> > 
> > with reasonable HW, u should not see much difference here. iscsi does
> > take more cpu (add some latency) because of protocol overhead, other
> > than that, no difference.
> 
> Hmm, if NBD has less overhead, and iSCSI takes more CPU, NBD could be a 
> good alternative - for example, for my poor underpowered-but-overloaded 
> ARM box :)

it really depends on what you want to achieve. no one fits all.

> 
> But since NBD doesn't handle disconnections at all, it's not really a 
> good alternative for some more serious usage IMO.
> 
> 

then why u need to run serious io on an arm box? ;)