[vdr] Re: VDR recording problem

[Ryan Mak <ryanmak@ameritech.net>]

# hdparm -i /dev/hdc

/dev/hdc:

 Model=WDC WD1200JB-00GVA0, FwRev=08.02D08,
SerialNo=WD-WCALA1379567
 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=234441648
 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: device does not report version:  1
2 3 4 5 6


--- "HGM.bg (GMX)" <vdr.hgm.bg@gmx.net> wrote:

> Ryan Mak wrote:
> 
> > # hdparm -tT /dev/hdc1
> > 
> > /dev/hdc1:
> >  Timing buffer-cache reads:   128 MB in  2.74
> seconds = 46.72 MB/sec
> >  Timing buffered disk reads:  64 MB in  8.10
> seconds =  7.90 MB/sec
> 
> That's not so good, in my expierence, below 10
> MB/sec for buffered reads
> is bad and the system is not fast enough for writing
> and the interrupts
> of the dvb-card.
> 
> My results:
> /dev/hda:
>  Timing buffer-cache reads:   1088 MB in  2.00
> seconds = 543.27 MB/sec
>  Timing buffered disk reads:  118 MB in  3.01
> seconds =  39.25 MB/sec
> 
> /dev/hdb:
>  Timing buffer-cache reads:   984 MB in  2.01
> seconds = 489.87 MB/sec
>  Timing buffered disk reads:  106 MB in  3.04
> seconds =  34.82 MB/sec
> 
> /dev/hdc:
>  Timing buffer-cache reads:   1032 MB in  2.00
> seconds = 515.56 MB/sec
>  Timing buffered disk reads:  132 MB in  3.05
> seconds =  43.31 MB/sec
> 
> /dev/sda:
>  Timing buffer-cache reads:   1024 MB in  2.00
> seconds = 511.82 MB/sec
>  Timing buffered disk reads:  162 MB in  3.02
> seconds =  53.69 MB/sec
> 
> Check in /proc/ide if you use the correct drivers
> for your ide-chipset
> (might be necessary to compile a new kernel) and
> check that dma is
> enabled ! This can be checked with hdparm -i
> /dev/hdc in your case !
> 
> /hgm.bg
> 
> 
> 
> 
> 
> 
> 
>