Probably, it is known problem. Any massive HDD operations, such a generation of
DVD structure (or even copying files from DVD to HDD - case, when stream speed
is limited by DVD-drive), make desktop enviroment (KDE in my case) noticeably
"clumsy". This takes place also when an operation is initiated via CLI with
"nice -n 10" prefix. All drives are in UDMA mode. If I remember well, this
problem was not so obvious with 2.4 kernels.
I use ~x86 and IDE HDD. 'hdparm -i /dev/hda' and 'hdparm -tT /dev/hda' are
below.
Any thoughts/refs?
_________________________________________
$$ hdparm -i /dev/hda
/dev/hda:
Model=SAMSUNG SP1614N, FwRev=TM100-24, SerialNo=S016J10X568479
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16
CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=268435455
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma3 udma4 *udma5
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 0: ATA/ATAPI-1 ATA/ATAPI-2
ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7
* signifies the current active mode
$$ hdparm -tT /dev/hda
/dev/hda:
Timing cached reads: 892 MB in 2.00 seconds = 446.02 MB/sec
Timing buffered disk reads: 172 MB in 3.03 seconds = 56.77 MB/sec
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