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Yet another cool OpenSolaris feature: Crossbow flows

December 2, 2009

While backing up my macbook to my OpenSolaris/ZFS server (what else would you trust your backup to?) I wanted to figure out if rsync was taking full advantage of my network card.

Add the opensolaris nic to a flow:

# flowadm add-flow -l rtls0 -a transport=tcp flow1

Then show the flow statistics:

# flowadm show-flow -S

flowadm shows approx ~90,000 Kb/sec flowing across the interface (not bad for a 100 Mpbs NIC card).

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