xqcam speed figures
Wim Lewis writes:
> A quick calculation shows that it takes a minimum of 320x240x(3/2)x6
> or 691200 I/O operations to fetch a 320x240x6 frame, which means
> my fastest numbers are doing about 1 million I/O ops per second.
> My (unsupported) hunch is that the I/O is the big bottleneck.
> My parallel port is on a card, not on the motherboard, and might
> well be particularly slow.
The ISA bus requires a 1usec hang for every I/O operation. Sounds to
me like you're running code from the cache, and writing the results to
-russ <email@example.com> http://www.crynwr.com/~nelson
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