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Technology Stocks : All About Sun Microsystems
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To: rudedog who wrote (48938)5/11/2002 2:55:03 PM
From: Win Smith  Read Replies (1) of 64865
 
Not to dispute the actual results, but 20k instructions on a ghz class machine is maybe 20 microseconds versus maybe 5 milliseconds for a (fast) disk i/o. Also, my understanding is that the main overhead in a task (or NT-style thread) switch is, actually, memory management overhead. A simple single process thread switch (e.g swapping registers & stack) can be done in a few hundred instructions if you don't need to go through privileged ops in the kernel.
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