DrillDownTool - profiling/investigating/analysing various subsystems like NFS, SMB/CIFS, ISCSI based on IOPS, throughput and latency.

This tool is intended for Solaris based OSs like Illumos. It has Dtrace as backend.

Overview of this tool:

ISCSI NFS CIFS | | | | | | -->IOPS -->IOPS -->IOPS | | | -->VOLUME -->FS -->FS | | | -->IP -->IP -->IP -->IP -->IP -->IP | | | -->VOLUME -->FS -->FS