parallelization and the storage manager

Ben Rosengart br+inn at
Fri Mar 22 17:06:36 UTC 2002

I know that overview and history rebuilds don't happen often, but
when they do, they take a loooooooong time.

They seem to be entirely I/O-bound.  It hurts me to look at my ten
disks full of news and see that one is at 100% utilization while the
others, and the CPU, are almost completely idle.

So it would be cool if makehistory could read more than one disk at a
time ... except that it's going through the storage manager, so it
doesn't know from "disks".

Could the storage manager be modified to make parallelization
possible? Is this a useful direction?  I'm not volunteering to make
this happen, so feel free to tell me to screw off, but maybe someone
wants to take this idea and run with it.

Ben Rosengart     (212) 741-4400 x215

1. A robot may not injure entertainment industry profits, or, through inaction,
   allow entertainment industry profits to come to harm.     --Matt McLeod

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