Michael Sparks <[EMAIL PROTECTED]> writes: > Similarly, from > a unix command line perspective, the following will automatically take > advantage of all the CPU's I have available:
> (find |while read i; do md5sum $i; done|cut -b-32) 2>/dev/null |sort No, it won't. At the most, it will use four CPU:s for user code. Even so, the vast majority of CPU time in the above pipeline will be spent in 'md5sum', but those calls will be run in series, not in parallell. The very small CPU bursts used by 'find' and 'cut' are negligable in comparison, and would likely fit within the slots when 'md5sum' is waiting for I/O even on a single-CPU system. And I'm fairly certain that 'sort' won't start spending CPU time until it has collected all its input, so you won't gain much there either. -- Thomas Bellman, Lysator Computer Club, Linköping University, Sweden "We don't understand the software, and ! bellman @ lysator.liu.se sometimes we don't understand the hardware, ! but we can *see* the blinking lights!" ! Make Love -- Nicht Wahr!
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