Re: SX164 onboard IDE

[Chris Kloiber <chris_kloiber suth com>]

"Ebinger . Eric" wrote:
> 
> > -----Original Message-----
> > From: Dan Morrill [mailto:morrildl@nycap.rr.com]

> I don't know about the performance but I have accessed an IDE hard drive
> on the 164SX under Linux as well as an IDE CD-ROM.  Note that this was
> using the generic IDE driver.  The latest versions of the Linux kernel
> are rumored to include support for the Cypress, which would be required
> in order to get DMA to work in any case.
> 
> Eric Ebinger

I am running 2.2.13 with the ide patches applied, as tweaked with hdparm
as I can:

hdparm -c1d1m16X34u1k1K1 /dev/hda 

On an IBM 15gig (U)DMA hard drive. Here are some common results for
hdparm -vTt /dev/hda:

/dev/hda:
 multcount    = 16 (on)
 I/O support  =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  1 (on)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 29795/16/63, sectors = 30033360, start = 0
 Timing buffer-cache reads:   128 MB in  1.58 seconds =80.83 MB/sec
 Timing buffered disk reads:  64 MB in  7.97 seconds = 8.03 MB/sec

Not a speed deamon by any means, but it sure beats the 1.5 MB/sec I was
getting before I discovered the ide patch and hdparm.

Chris Kloiber