[mythtv-users] Pundit-R SATA drive speed

cfactor cfactor at usrsbin.net
Wed Jul 13 12:07:43 EDT 2005

I've noticed that as well.  I'm also suspecting driver issues, but there 
doesn't seem to be a whole lot of information regarding the SATA 
controller on this board with linux out there.  I'll probably try 
downloading the latest vanilla kernel later today to see if they have any 



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On Wed, 13 Jul 2005, Mark Knecht wrote:

> On 7/12/05, cfactor <cfactor at usrsbin.net> wrote:
>> Hi all.  I'm building a new myth backend.  I just got a pundit-r box.  I
>> have a WD SATA HD and IDE CD-ROM connected to it.  Running hdparm, I'm
>> only getting about 14MB/s.  DMA is turned on, different multcount options
>> don't seem to do much.  I've seen few reports of it online, but no
>> solution.  What kind of speed are other Pundit-R/SATA users getting?
>> ___
>> John
> John,
>   I'm getting about the same thing. 12MB/S if I don't mess with
> settings. Up to about 14MB/S if I do.
>   I did notice that my SATA drive doesn't report as many udma modes
> as my other drives and is hence set to a slower mode:
> myth12 ~ # hdparm -i /dev/hdc
> /dev/hdc:
> Model=WDC WD1600JD-00HBB0, FwRev=08.02D08, SerialNo=WD-WMAL93597321
> Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
> RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=74
> BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
> IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
> PIO modes:  pio0 pio1 pio2 pio3 pio4
> DMA modes:  mdma0 mdma1 mdma2
> UDMA modes: udma0 udma1 *udma2
> AdvancedPM=no WriteCache=enabled
> Drive conforms to: device does not report version:
> * signifies the current active mode
> myth12 ~ #
> Maybe there's somethign about the current ATI IGP chipset driver that
> doesn't do the best at getting speed out of the drives?
> - Mark
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