82598EB Datasheet, PDF (275/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Interrupts
Figure 3-39. Interrupt Throttle Flow Diagram
For cases where the 82598 is connected to a small number of clients, it is desirable to initialize the
interrupt as soon as possible with minimum latency. For these cases, when the EITR counter counts
down to zero and no interrupt event has happened, then the EITR counter is not reset but stays at zero.
Thus, the next interrupt event triggers an interrupt immediately. That scenario is illustrated as Case B.
Case A: Heavy load, interrupts moderated
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