On Thu, 17 Apr 2008, Alexander Sack wrote:
For my own edification, when do you want use DEVICE_POLLING versus
interrupt driven network I/O? With all question like these I suppose
the answer depends on the workload and the interrupt bandwidth of the
machine (which depends on the type of hardware)...
But why was it added to begin with if standard interrupt driven I/O is
faster? (was it the fact that historically hardware didn't do
interrupt coalescing initially)
The ability to reserve cpu is one of the great features.
If your host is being DDOS'ed it is good to have a portion of the CPU
reserved to applications so a) the machine dosn't die. and b) so you can
continue to login and investigate and perhaps solve the problem.
/Chris
--
http://www.arnold.se/
http://www.mbit.us/
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