Sun Microsystems E25544-02, Руководство пользователя

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70 Sun Dual Port 10GBase-T Adapter User’s Guide • July 2012
3. Use the
iostat
(1M) command to view the I/O statistics to ensure that there are
no bottlenecks on the disk.
If you discover a bottleneck, try setting logging to dump to the
/tmp
directory.
Then, retest to ensure that the new configuration improved performance.
4. Use the
vmstat
(1M) and the
mpstat
(1M) commands to check that none of the
following conditions exist:
■
CPU is pegged.
■
CPU is receiving too many interrupts.
■
Memory is low.
■
Page faults are occurring.
■
Contention for resources causes too many spins on mutex (
smtx
).
If the performance issue points to the driver, try to profile the call stack for
ixgbe
(7D) by using the DTrace script. For more information about the DTrace
script, go to:
http://support.oracle.com
Related Information
■
“Analyze Why the Device Link Is Missing” on page 68
■
“Analyze a Port Hang” on page 69
# iostat -xcn 5