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[vdr] Re: VDR recording problem
# 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
>
>
>
>
>
>
>
>
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