Using the stats command in singleton mode enables you to see a set of information about the system's current state at the command line.
The following command shows all current statistics for a volume named myvol.
toaster> stats show volume:myvol volume:myvol:total_ops:132/s volume:myvol:avg_latency:13ms volume:myvol:read_ops:5/s volume:myvol:read_data:1923b/s volume:myvol:read_latency:23ms volume:myvol:write_ops:186/s volume:myvol:write_data:1876b/s volume:myvol:write_latency:6ms volume:myvol:other_ops:0/s volume:myvol:other_latency:0ms
The following command returns any counters in the system object ending in "latency".
toaster> stats show -e system::latency$ system:system:sys_read_latency:0ms system:system:sys_write_latency:0ms system:system:sys_avg_latency:0ms