statistics show-periodic -interval 1 # is very similar to sysstat... some other commands I like to use
cluster statistics show # also similar to sysstat
dashboard performance show
Also some very useful information when you set an infinite QoS policy... select SVMs or volumes to apply a policy to... set the policy to INF... then view stats summarized for those objects... or default to all.
qos statistics workload performance show -refresh-display true
Some applications, such as VMTurbo, will integrate with an array / cluster to give you a similar number (based off of the same formula to calculate expected RAW IOPS). Can't recall off the top of my head if Balance does it as well (will double check).
But yes, as shane.bradley mentioned, "statistics show-periodic" will give you an output of current IOPS, similar to running "sysstat -x" in 7-Mode (or running that same command in cDOT via the node shell or " node run" command).