[mythtv-users] Terrible drive performance on frontend

[John Drescher]

>
> # hdparm -i /dev/hda;hdparm -tT /dev/hda
>
> /dev/hda:
>
> Model=WDC WD1600JB-00GVA0, FwRev=08.02D08, SerialNo=WD-WMAL92166621
> 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=4047/16/255, CurSects=16511760, 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 udma3 udma4 *udma5
> AdvancedPM=no WriteCache=enabled
> Drive conforms to: Unspecified:  ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3
> ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6
>
> * signifies the current active mode
>
>
> /dev/hda:
> Timing cached reads:   328 MB in  2.00 seconds = 163.76 MB/sec
> Timing buffered disk reads:  154 MB in  3.05 seconds =  50.51 MB/sec
> _______________________________________________________________________
>
> The bottom number is not bad considering that your drive is a 3 to 4 year
old model. The top number is the one I would worry about. 164 MB /s is
absolutely abysmal for any current computer. I get 10 to 20 times that on my
mythbox. What are your system specs?

John
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20061101/9a58d2a7/attachment.htm