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| Sun Quad Port GbE PCIe 2.0 Low Profile Adapter, UTP
The adapter supports several driver parameters that affect the performance of the ports. See Driver Parameters (Oracle Solaris OS) for more information about the default values.
# truss -p PID
If you find any issues, fix them before proceeding.
# iostat -xcn 5
If you discover a bottleneck, try setting logging to dump to the /tmp directory. Then, retest to ensure that the new configuration improved performance.
If the performance issue points to the driver, try to profile the call stack for igb(7D) by using the DTrace script. For more information about the DTrace script, go to: