Disk Performance Better in Fusion than Running Natively

[Infrared]

According to Vista's disk performance ratings:

Native: 5.4
Fusion: 5.9

Erm.. ?

 

[ZeelessOne]

Is Fusion running Vista off your Boot Camp partition or is it strictly a virtual machine?

 

[Infrared]

Is Fusion running Vista off your Boot Camp partition or is it strictly a virtual machine?

Strictly in a VM. The native install is on a disk of its own,
which happens to be the same kind of drive the VM lives
on.

 

[Gonk42]

According to Vista's disk performance ratings:

Native: 5.4
Fusion: 5.9

Erm.. ?

Maybe Vista uses software timing of somesort to get the ratings (rather
than real CPU ticks or the real time clock) and the fact that it is running
in a VM means its clock has slowed so that the disk seems to be relatively
faster.

Just an idea based on pure speculation!

 

[Infrared]

Maybe Vista uses software timing of somesort to get the ratings (rather
than real CPU ticks or the real time clock) and the fact that it is running
in a VM means its clock has slowed so that the disk seems to be relatively
faster.

Just an idea based on pure speculation!

Could it be Apple hobbling Boot Camp performance again?

https://forums.macrumors.com/threads/223679/

I don't think it's quite that bad now. Still, I suspect that the
same hardware with a real PC BIOS would run Windows faster.

 

[tobyg]

Could it be Apple hobbling Boot Camp performance again?

https://forums.macrumors.com/threads/223679/

I don't think it's quite that bad now. Still, I suspect that the
same hardware with a real PC BIOS would run Windows faster.

Wow. Thanks for linking to an ancient thread of mine! That was before Apple even had bootcamp. The world was different then.

I believe the answer is something more simple such as the caching that VMware does with its simulated hard drive that it presents to the underlying virtualized OS.

 

[CanadaRAM]

According to Vista's disk performance ratings:

Native: 5.4
Fusion: 5.9

Erm.. ?

It's more likely the measuring method is unreliable, rather than the drive changes performance.

 

[Infrared]

Wow. Thanks for linking to an ancient thread of mine! That was before Apple even had bootcamp. The world was different then.

I believe the answer is something more simple such as the caching that VMware does with its simulated hard drive that it presents to the underlying virtualized OS.

Yes, could be that!

One thing I noticed: the disk drives in Windows make a distinct and
different sound compared to running under OS X. Presumably that
has something to do with the different file structure, layout and
way it is accessed (hmm.. that sounds suspiciously like stating the
very obvious )

 

[Infrared]

It's more likely the measuring method is unreliable, rather than the drive changes performance.

Yes it could be that too!

Thanks.