reiserfs分区 copy文件至 fat32分区速度为什么这么慢?

ksgimi

为什么reiserfs 分区 copy文件至 fat32分区 速度这么慢
1.3G 要copy 4分钟
在windows xp 下非常快fat32->fat32，已用hdparm 非常恼火!

# hdparm -d1 -c1 -X69 -m16 /dev/hda

# hdparm -i /dev/hdb

/dev/hdb:

Model=ST380011A, FwRev=3.06, SerialNo=5JV80X19
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
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
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 2:

* signifies the current active mode

# hdparm  /dev/hdb

/dev/hdb:
multcount    = 16 (on)
IO_support   =  1 (32-bit)
unmaskirq    =  0 (off)
using_dma    =  1 (on)
keepsettings =  0 (off)
readonly     =  0 (off)
readahead    = 256 (on)
geometry     = 16383/255/63, sectors = 156301488, start = 0

# hdparm -tT /dev/hdb

/dev/hdb:
Timing cached reads:   792 MB in  2.01 seconds = 394.68 MB/sec
Timing buffered disk reads:   82 MB in  3.00 seconds =  27.33 MB/sec

ltkun

windows下多少？
是直接cp的还是在文件管理器里面
4分钟等于240s 大约8MB/s

ailantian

[php]vax:/home/ailantian# apt-get install hdparm
Reading Package Lists... Done
Building Dependency Tree... Done
Suggested packages:
  apmd
The following NEW packages will be installed:
  hdparm
0 upgraded, 1 newly installed, 0 to remove and 327 not upgraded.
Need to get 55.6kB of archives.
After unpacking 225kB of additional disk space will be used.
Get:1 http://mirror.dlut.edu.cn /unstable/main hdparm 6.1-7 [55.6kB]
Fetched 55.6kB in 0s (331kB/s)
Selecting previously deselected package hdparm.
(Reading database ... 69894 files and directories currently installed.)
Unpacking hdparm (from .../archives/hdparm_6.1-7_i386.deb) ...
Setting up hdparm (6.1-7) ...

vax:/home/ailantian# hdparm -tT /dev/hda

/dev/hda:
Timing cached reads:   1244 MB in  2.00 seconds = 622.09 MB/sec
Timing buffered disk reads:  126 MB in  3.00 seconds =  41.95 MB/sec
vax:/home/ailantian# hdparm  /dev/hda

/dev/hda:
multcount    =  0 (off)
IO_support   =  0 (default 16-bit)
unmaskirq    =  0 (off)
using_dma    =  1 (on)
keepsettings =  0 (off)
readonly     =  0 (off)
readahead    = 256 (on)
geometry     = 16383/255/63, sectors = 78165360, start = 0
vax:/home/ailantian# hdparm  -i /dev/hda

/dev/hda:

Model=ST340014A, FwRev=3.04, SerialNo=3JX0KH2B
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=off
CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=78165360
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
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 2:

* signifies the current active mode

vax:/home/ailantian# [/php]