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Quantum Fireball Performance

daemon@ATHENA.MIT.EDU (Davi Antunes Lima)
Mon Feb 3 18:46:53 1997

Date: 	Mon, 3 Feb 1997 21:20:53 -0200 (EDT)
From: Davi Antunes Lima <davi@tba.com.br>
To: linux-scsi@vger.rutgers.edu

Hi,

	Recently, I decided to change my EIDE HD (Maxtor) for a SCSI disk and
adapter. I bought an Adaptec 2940 and a Quantum Fireball 2.0 GB.
Although I thought the general performance of the system would increase,
I was surprised to see that my new SCSI disk would load my programs
slower than the older disk (maxtor eide).

	I would like to know if that is true or, if not, what do I have to do
to make my disk faster. I'm including the kernel messages refering to
the SCSI adapter and disk.

aic7xxx: BurstLen = 8 DWDs, Latency Timer = 64 PCLKS
aic7xxx: devconfig = 0x580.
aic7xxx: Reading SEEPROM...done.
aic7xxx: Extended translation enabled.
aic7xxx: Memory check yields 16 SCBs, paging not enabled.
AHA-2940 (PCI-bus), I/O 0xec00, Mem 0xfebff000:
    irq 9
    bus release time 40 bclks
    data fifo threshold 100%
    SCSI CHANNEL A:
        scsi id 7
        scsi selection timeout 256 ms
        scsi bus reset at power-on enabled
        scsi bus parity enabled
        scsi bus termination (low byte) enabled
aic7xxx: Downloading sequencer code...done.
aic7xxx: Resetting the SCSI bus...done.
scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 4.0/3.2/4.0
scsi : 1 host.
scsi0: Scanning channel A for devices.
Started kswapd v 1.4.2.2 
scsi0: Target 0, channel A, now synchronous at 10.0MHz, offset 15.
  Vendor: QUANTUM   Model: FIREBALL_TM2110S  Rev: 300N
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
scsi : detected 1 SCSI disk total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 4124736 [2014 MB] [2.0 
GB]

Thanks a lot for any help.


Davi


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