Kevin Kempter wrote: ...
# hdparm /dev/sda /dev/sda: IO_support = 0 (default 16-bit) readonly = 0 (off) readahead = 256 (on) geometry = 12161/255/63, sectors = 195371568, start = 0
OK, you're using the drive in SATA mode. You should run something like this: dmesg >/tmp/whatever and check the /tmp/whatever file for what is logged when the driver is loaded. I get something like this: ... SCSI subsystem initialized libata version 2.00 loaded. ata_piix 0000:00:1f.2: version 2.00 ata_piix 0000:00:1f.2: MAP [ P0 P2 P1 P3 ] ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 201 PCI: Setting latency timer of device 0000:00:1f.2 to 64 ata1: SATA max UDMA/133 cmd 0x3818 ctl 0x3832 bmdma 0x34F0 irq 201 ata2: SATA max UDMA/133 cmd 0x3820 ctl 0x3836 bmdma 0x34F8 irq 201 scsi0 : ata_piix ata1.00: ATA-7, max UDMA/100, 586072368 sectors: LBA48 NCQ (depth 0/32) ata1.00: ata1: dev 0 multi count 16 ata1.00: configured for UDMA/100 scsi1 : ata_piix ata2.00: ATA-7, max UDMA/100, 586072368 sectors: LBA48 NCQ (depth 0/32) ata2.00: ata2: dev 0 multi count 16 ata2.00: configured for UDMA/100 ... This is for a machine with two 300G SATA disks. Also make a simple read speed test: # hdparm -t -T /dev/sda /dev/sda: Timing cached reads: 3620 MB in 2.00 seconds = 1810.28 MB/sec Timing buffered disk reads: 204 MB in 3.01 seconds = 67.87 MB/sec It's the number 67.87 which is interesting. Mogens -- Mogens Kjaer, Carlsberg A/S, Computer Department Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark Phone: +45 33 27 53 25, Fax: +45 33 27 47 08 Email: mk@xxxxxx Homepage: http://www.crc.dk
