[ntp:questions] NTP vs RADclock?

Rick Jones rick.jones2 at hp.com
Mon Jun 11 17:38:22 UTC 2012

Rick Jones <rick.jones2 at hp.com> wrote:

> Might go ahead and set rx-usecs to zero.  The Intel drivers have (or
> at least had) a module parameter called InterruptThrottleRate which
> tries to be rather clever.

> http://www.intel.com/support/network/adapter/pro100/sb/CS-032516.htm

> I'm not sure just at the moment how that shows-up in the ethtool
> output though.

Based on reading between the lines of an email reply I've gotten from
some folks I know at Intel, your interface does indeed have interrupt
coalescing enabled.  To disable it, set rx-usecs to zero via ethtool -C:

ethtool -C <interface> rx-usecs 0

rick jones
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