* Paul Abrahams [Sun, 06 May 2001 20:15:31 -0400]:
Well, there are two numbers, one above 66MB/sec and one below:
root@suillus:/aux/home/pwa > hdparm -tT /dev/hda
/dev/hda: Timing buffer-cache reads: 128 MB in 1.10 seconds =116.36 MB/sec Timing buffered disk reads: 64 MB in 2.03 seconds = 31.53 MB/sec
I'll see what happens when I attach the controller.
Yeah, I should've told you to use only -t, as that one tests the drive. The other tests the speed of the buffer cache. The second line is the interesting (BTW, repeat the timing a few times as that'll make the values more reliable) and it shows that the transfer rate is even below the ATA33 speed. I'll bet the numbers for buffered disk reads won't be significantly higher when you attach the drive to the ATA100 controller. BTW, for testing new hard disks I'd recommend ftp://ftp.heise.de/pub/ct/ctsi/h2bench.zip . This is a DOS program that'll overwrite the whole disk, so it can only be used for a fresh disk. But otherwise it's the best free program I've found in many years. c't is one of Germany's oldest (first issue was 12/83) computer magazines and IMO the best we have. A bit like the old Byte of the eighties. -- Penguins to save the dinosaurs -- Handelsblatt on Linux for S/390