[PLUG] Confusion with DMA on or off

[Sasha Romanosky]

okay, looks like I'm good, then. Thanks for the feedback. 

> Try turning off DMA using hdparm, then rerun the -Tt tests.  
> They will be slower if DMA was functioning before.
> 
> > 
> 100 MB/sec. is about right for UDMA(100), the 30 MB/sec is 
> about right for a modern IDE drive.

Good to know. Thanks

> > /dev/hdf:
> >  Timing buffer-cache reads:   128 MB in  1.16 seconds =110.34 MB/sec
> >  Timing buffered disk reads:  64 MB in  1.47 seconds = 43.54 MB/sec
> > 
> WOW, better than 40 MB/sec.  What kind of drive is that one?
> 

This one of those western digital 120G drives that fry's has on sale
every now and again. It was purchased a month or two ago. 

sasha