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有点慢,我用的是宇瞻200X 2G,照理说可以达到30MB/sec,现在只有20MB/sec,相当于133X
- hdparm -tT /dev/hda
- /dev/hda:
- Timing cached reads: 388 MB in 2.01 seconds = 192.60 MB/sec
- Timing buffered disk reads: 60 MB in 3.05 seconds = 19.64 MB/sec
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- hdparm -I /dev/hda
- /dev/hda:
- CompactFlash ATA device, with removable media
- Model Number: CF Card
- Serial Number: 0008504011181
- Firmware Revision: Ver2.20
- Standards:
- Likely used: 4
- Configuration:
- Logical max current
- cylinders 3909 3909
- heads 16 16
- sectors/track 63 63
- --
- bytes/track: 32256 bytes/sector: 512
- CHS current addressable sectors: 3940272
- LBA user addressable sectors: 3940272
- device size with M = 1024*1024: 1923 MBytes
- device size with M = 1000*1000: 2017 MBytes (2 GB)
- Capabilities:
- LBA, IORDY(may be)(cannot be disabled)
- Buffer size: 1.0kB bytes avail on r/w long: 4
- Standby timer values: spec'd by Vendor
- R/W multiple sector transfer: Max = 1 Current = 1
- DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5
- Cycle time: min=120ns recommended=120ns
- PIO: pio0 pio1 pio2 pio3 pio4
- Cycle time: no flow control=120ns IORDY flow control=120ns
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竟然运行在udma2模式,我用的是这种转接卡
http://bak2.beareyes.com.cn/2/lib/200709/24/20070924109_1.htm
- dmesg | grep hda
- Kernel command line: root=/dev/hda2 acpi=force lapic
- ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
- hda: CF Card, CFA DISK drive
- hda: drive side 80-wire cable detection failed, limiting max speed to UDMA33
- hda: selected mode 0x42
- hda: max request size: 128KiB
- hda: 3940272 sectors (2017 MB) w/1KiB Cache, CHS=3909/16/63, UDMA(33)
- hda: hda1 hda2
- EXT3 FS on hda2, internal journal
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上面是启动记录,就算“drive side 80-wire cable detection failed”也应该可以进udma4(ATA33)啊 |
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