Netapp sysstat is like vmstat and iostat rolled into one command. It reports filer performance statistics like CPU utilization, the amount of disk traffic, and tape traffic. When run with out options, sysstat will prints a new line every 15 seconds, of just a basic amount of information. You have to use control-C (^c) or set the interval count (-c count ) to stop sysstat after time. For more detailed information, use the -u option. For specific information to one particular protocol, you can use other options. I’ll list them here.
- -f FCP statistics
- -i iSCSI statistics
- -b SAN (blocks) extended statistics
- -u extended utilization statistics
- -x extended output format. This includes all available output fields. Be aware that this produces output that is longer than 80 columns and is generally intended for “off-line” types of analysis and not for “real-time” viewing.
- -m Displays multi-processor CPU utilization statistics. In addition to the percentage of the time that one or more CPUs were busy (ANY), the average (AVG) is displayed, as well as, the individual utilization of each processor. This is only handy on multi proc systems. Won’t work on single processor machines.
You can use Netapp SIO tool to benchmark netapp systems. SIO is a client-side workload generator that works with any target. It generates I/O load and does basic statistics to see how any type of storage performs under certain conditions.
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