kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_ADAPTEC_STARFIRE_NAPI.
Result is shown for kernelversion 2.6.26.8

Use Rx Polling (NAPI) (EXPERIMENTAL)

configname: CONFIG_ADAPTEC_STARFIRE_NAPI

Linux Kernel Configuration
└─> Device Drivers
└─> Network device support
└─> Ethernet (10 or 100Mbit)
└─> Use Rx Polling (NAPI) (EXPERIMENTAL)

NAPI is a new driver API designed to reduce CPU and interrupt load
when the driver is receiving lots of packets from the card. It is
still somewhat experimental and thus not yet enabled by default.

If your estimated Rx load is 10kpps or more, or if the card will be
deployed on potentially unfriendly networks (e.g. in a firewall),
then say Y here.

If in doubt, say N.