Angus Dorbie (dorbie++at++bitch.reading.sgi.com)
Sun, 8 Dec 1996 20:28:02 +0000
The secret of high performance disk i/o is to use multiple drives.
xfs makes this really simple for the programmer because you can build
a logical volume which will stripe your data across multiple
drives so you can gat high sustainable i/o from a single file system.
Look at the manual entry for xlv_make and mkfs_xfs.
You should also use an asyncronous process to read the data into a
shared memory buffer which can then be read by another process, this
should smooth out any variation in performance form disk.
> be either a Max Impact or Infinite Reality (probably IR)? How much could be
> read in a 20th of a second?
>-- End of excerpt from Jeff Brickley
Depends on the number & speed of your disks, I think you can get
about 7-15Mb/sec per HDD, why don't you try measuring this.
Cheers,
Angus.
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