On Mon, Nov 18, 2002 at 16:16:57 +0100, Emil Pedersen wrote: > > So are the read times as expected for an IDE ATA133, 7200RPM, 40GB drive? > > Certainly not. Bellow is what I got from my IBM 7200 rpm disk, (using > UDMA66): > I only just got this computer and hard drive 1 week ago and it is supposed to be quite reasonable.
Here is what Western Digital's site says: Rotational Speed 7,200 RPM (nominal) Buffer Size 8 MB Buffer To Disk 591.0 Mbits/s (Max) Read Seek Time (Average) 8.9 ms Write Seek Time (Average) 10.9 ms (average) Track-To-Track Seek Time 2.0 ms (average) Full Stroke Seek 21.0 ms (average) Average Latency 4.2 ms (nominal) Mode 5 Ultra ATA 100.0 MB/s Mode 4 Ultra ATA 66.6 MB/s Mode 2 Ultra ATA 33.3 MB/s Mode 4 PIO 16.6 MB/s Mode 2 multi-word DMA 16.6 MB/s It is connected to a fairly new motherboard ASUS A7V8X using the ATA133 connector. This thing should fly a lot more than it does it seems. When I try setting DMA on like: # hdparm -c1 -d1 /dev/hda /dev/hda: setting 32-bit I/O support flag to 1 setting using_dma to 1 (on) I/O support = 1 (32-bit) using_dma = 1 (on) But then attempting to list the output on the drive causes it the command to hang and then eventually list the same output as before making the changes: # hdparm /dev/hda /dev/hda: multcount = 0 (off) I/O support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 77545/16/63, sectors = 78165360, start = 0 busstate = 1 (on) Then checking in syslog I see: Nov 19: hda: timeout waiting for DMA Nov 19: ide_dmaproc: chipset supported ide_dma_timeout func only: 14 Nov 19: hda: status error: status=0x58 { DriveReady SeekComplete DataRequest } Nov 19: hda: drive not ready for command Nov 19: hda: status timeout: status=0xd0 { Busy } Nov 19: hda: drive not ready for command Nov 19: ide0: reset: success So it seems that the drive gets reset for some reason. Cheers. Mark. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]