Re: HELP: UDMA/100 woes and trouble.
> Yeah, that's pretty much where I stand today... I've got an old ATA33 disk.
> It's a Quantum Fireball 30GB disk. What sort of throughput should I be
> getting?
>
> nebula:/home/jasonb# hdparm -t -T /dev/hdb
>
> /dev/hdb:
> Timing buffer-cache reads: 128 MB in 2.09 seconds = 61.24 MB/sec
> Timing buffered disk reads: 64 MB in 8.96 seconds = 7.14 MB/sec
>
> /dev/hdb:
> multcount = 16 (on)
> 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 = 3649/255/63, sectors = 58633344, start = 0
>
Ouch. Get that DMA turned on. I've gotten 30+ meg per second on Fireball
AS's, and slightly lower on LM's. Is your cpu an old pentium 233 or
something? The buffer-cache reads seems rather low, indicating the memory
is slow, which could mean an old slow machine, to me.
Once you get that DMA turned on, ( -d1 ) i bet your speeds will go way up.
If that's a 30gb Fireball LM or AS, it's not ATA33, even the LM's were
ATA66, the AS ATA100.
Mike
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