Pieter, On Saturday 22 January 2005 12:06, Pieter Hulshoff wrote:
Hello all,
hdparm tells me that one of my partitions is really slow. While hda3 for instance gives me about 40-50 MB/s, hda4 only gives 4-8 MB/s. hda4 is part of a RAID partition together with hdc4. While hdc4 also gives about 40-50 MB/s, hda4 appears to be very slow. Does anyone know what might cause this, and how I might check or correct what is wrong?
Regards,
Pieter Hulshoff
How about showing us actual output from hdparam. Not only from the speed test options, but from the device information options, too. There may be some clues therein. Something like this: % hdparm -v -i -t /dev/hda /dev/hda: HDIO_GET_MULTCOUNT failed: Invalid argument IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) HDIO_GETGEO failed: Invalid argument Model=SONY DVD RW DRU-510A, FwRev=1.0d, SerialNo=EA3FE1B6 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic } RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=0kB, MaxMultSect=0 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0 IORDY=on/off, tPIO={min:180,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 AdvancedPM=no Drive conforms to: device does not report version: * signifies the current active mode Timing buffered disk reads: 16 MB in 3.19 seconds = 5.01 MB/sec The only IDE devices on my system are DVDs, so there's no meaningful speed comparison with a hard drive. Randall Schulz