Tuning Hard Disks

Benjamin Keating motionsiren at gmail.com
Mon May 23 15:22:27 PDT 2005


I just noticed, 3ware managed devices (obviously) don't show up. Is
there 3rd party software that needs to be installed in order to
view/tune 3ware (twe) devices? Nothing  FreeBSD specific came with the
card.

On 5/23/05, Benjamin Keating <motionsiren at gmail.com> wrote:
> Thank you. This is exactly what I was looking for. How did you learn
> about these tools? From the pages i've read (most of) the handbook, I
> didn't see it mention them.
> 
> On 5/23/05, Roland Smith <rsmith at xs4all.nl> wrote:
> > On Mon, May 23, 2005 at 11:12:59AM -0700, Benjamin Keating wrote:
> > > Hey all,
> > >
> > > I'd like to tweak my drives / view there current configurations. I get
> > > really slow xfers from two machine in the same, quite, LAN (both
> > > running FBSD 5.4 with good Intell Pro100 NICS). Im not sure if DMA is
> > > enabled or not so I'd like to start with figuring out what to use to
> > > view this info. Anything like hdparm?
> >
> > Assuming you have ATA drives, do the following (as root)
> >
> > run 'atacontrol list' to see which channel number the drive is on. Then
> > try 'atacontrol mode N', where N is the channel number. This wil give
> > you the current transfer mode of the drive. You can also use atacontrol
> > to set the mode. See the manual page.
> >
> > You can see if DMA is enabled with 'sysctl hw.ata.ata_dma'.
> >
> > Roland
> > --
> > R.F.Smith (http://www.xs4all.nl/~rsmith/) Please send e-mail as plain text.
> > public key: http://www.xs4all.nl/~rsmith/pubkey.txt
> >
> >
> >
>


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