Heavy I/O blocks FreeBSD box for several seconds

Chuck Swiger cswiger at mac.com
Fri Jul 8 00:19:10 UTC 2011

On Jul 7, 2011, at 3:51 PM, Hartmann, O. wrote:
> This is quibbling. On heavy loads on networ, disk et cetera, isn't there always and also a CPU bound load?

No.  Properly written software blocks when waiting on network or disk I/O, and doesn't sit there spinning in a busy-wait consuming CPU until it actually gets more work to do.

See select(2), kqueue(2), and friends.


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