Re: DMA or not DMA...

[spec@vax2.concordia.ca (Mitchell Spector)]

In article pubpc1@library.ucla.edu writes...

>Here are the results of the shift-boot times measured from
>the moment the "Welcome to the IIgs" screen popped up to the time
>the Finder appeared.  My copy of System 6.0.1 was installed after the
>volume had been used for a while, so there was fragmentation.
> 
>Time to boot (sec)      with DMA on    
>------------------------------------  [side snipping]
>@13.75MHz/16K cache             11                                   
>@non-Zip speed                  19                      

    That's odd, on my system, which is very close to yours (my Zip is
1.25 MHz faster with all cache active, but I doubt there is a major 
significant difference). I get the following:

Time to boot (sec)      with DMA on
------------------------------------ 
@15MHz/64K cache                 5
@non-Zip speed                  11

    Either the RamFAST makes a huge difference or you have a really old
and slow SCSI hardrive (my past two drives have been 4500 RPMs and have
had an access time of around 11-12ms). I think my new Seagate drive is
slightly slower than the Quantum, but I'm getting roughly double the
performance over your setup.

Mirchell Spector
spec@vax2.concordia.ca