On Tuesday 12 June 2001 16:50, Scott Pletcher wrote:
> Hi All,
> I've got some troublesome readings from two identical hard
> drives set up the same. Does anyone know why they are
> performing so differently? I suppose hda may be bad, but I
> was hoping to find some other way to test this. Thanks!
>
> Scott
>
> ----THE DATA
>
> Here are the hard drives:
> hda: Maxtor 52049H4, ATA DISK drive (master ide0)
> hdb: Maxtor 52049H4, ATA DISK drive (slave ide0)
>
> Running hdparm I get:
> [root@haldane scott]# hdparm -Tt /dev/hda
>
> /dev/hda:
> Timing buffer-cache reads: 128 MB in 0.87 seconds =147.13
> MB/sec Timing buffered disk reads: 64 MB in 31.17 seconds =
> 2.05 MB/sec
>
> [root@haldane scott]# hdparm -Tt /dev/hdb
>
> /dev/hdb:
> Timing buffer-cache reads: 128 MB in 0.85 seconds =150.59
> MB/sec Timing buffered disk reads: 64 MB in 2.21 seconds =
> 28.96 MB/sec [root@haldane scott]# hdparm /dev/hda
>
>
> Here are the settings:
> /dev/hda:
> multcount = 16 (on)
> I/O support = 3 (32-bit w/sync)
> unmaskirq = 0 (off)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> nowerr = 0 (off)
> readonly = 0 (off)
> readahead = 8 (on)
> geometry = 2482/255/63, sectors = 39882528, start = 0
> [root@haldane scott]# hdparm /dev/hdb
>
> /dev/hdb:
> multcount = 16 (on)
> I/O support = 3 (32-bit w/sync)
> unmaskirq = 0 (off)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> nowerr = 0 (off)
> readonly = 0 (off)
> readahead = 8 (on)
> geometry = 2491/255/63, sectors = 40020624, start = 0
if you are running 8.0, you might try this
http://perso.mandrakesoft.com/~civileme/drakopt
download the file drivedb2 and place it at /.drivedb
download the file drakopt2 and put it anywhere
Open a terminal
log in to the directory where you downloaded drakopt2
type
./drakopt2
When it completes, your drives should be tuned.
Drive hda seems to have a higher count of bad sectors from the
factory, but draw no conclusions til you try drakopt.
hdparm to have meaning should be run three times in a row
without other programs perking along. The capital T on the test
need not be used since it simply measures the bandwidth of your
memory buffer.
Civileme
