Eric W. Biederman wrote:
Jeff Garzik <[EMAIL PROTECTED]> writes:
This was discussed on the netdev list, and the conclusion was that
you want both NAPI and hw mitigation. This was implemented in a
few drivers, at least.
How does that deal with the latency that hw mitigation introduces.
When you have a workload that bottle-necked waiting for that next
packet and hw mitigation is turned on you can see some horrible
unjustified slow downs.
Presumably at low traffic you would disable hardware mitigation to get
the best possible latency. As traffic ramps up you tune the hardware
mitigation appropriately. At high traffic loads, you end up with full
hardware mitigation, but you have enough packets coming in that the
latency is minimal.
Chris
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