disk problems or false alarm??

[Guolin Cheng]

Thanks.

 Now I see that the 33MB/s speed limitation is not my fault. :)

 Then I can do exactly nothing to speed it up.

 --Guolin Cheng


-----Original Message-----
From: William Hooper [mailto:whooperhsd3 at earthlink.net] 
Sent: Friday, April 30, 2004 4:50 PM
To: fedora-list at redhat.com
Subject: RE: disk problems or false alarm??


Guolin Cheng said:

>  Then that means for normal ia-32 machines, the PCI&IDE Bus speed is
> mostly 33MHz/s, and so the sustainable IDE disk access speed is always
> no more than about 33MB/s?  I tried several types of Linux boxes, the
> long-time disk access is about no more than 35MB/s.

To very broadly generalize 33MB/s sustainable is a limitation of
physically reading the disk, not the interface from the motherboard to
the
disk.  All the ATA66, ATA100, and ATA133 specs are about burst speed
(basically reading from the disk's on board cache).  Alternatives for
faster sustainable speeds would include: faster spinning SCSI disks,
RAID,
non-mechanical hard drives.

-- 
William Hooper


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