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Add-on Card User's Guide
restoring the network connection. To eliminate the potential for the hang, ensure that
InterruptThrottleRate is set no greater than 75,000 and is not set to 0.
NOTE: When e1000 is loaded with default settings and multiple adapters are in
use simultaneously, the CPU utilization may increase non-linearly. In order to limit
the CPU utilization without impacting the overall throughput, we recommend that
you load the driver as follows:
modprobe e1000 InterruptThrottleRate=3000,3000,3000
This sets the InterruptThrottleRate to 3000 interrupts/sec for the fi rst, second, and
third instances of the driver. The range of 2000 to 3000 interrupts per second works
on a majority of systems and is a good starting point, but the optimal value will be
platform-specifi c. If CPU utilization is not a concern, use RX_POLLING (NAPI) and
default driver settings.
