iotop on pogo v3 oxnas (no replies)

I installed iotop so I could compare some numbers between pogo's v3 with Debian and v4 with Arch.

Sorry about the Debian newb questions, lol. Unfortunately, it looks like on my pogo v3 with Linux 4.1.0, I may need to recompile the kernel with some additional options to get it working? Anyone ran into this and an have a simpler solution than a kernel recompile? Not sure how this stuff works with Debian.

[root@PogoV3oxnas ~]# iotop 
Could not run iotop as some of the requirements are not met:
- Linux >= 2.6.20 with
  - I/O accounting support (CONFIG_TASKSTATS, CONFIG_TASK_DELAY_ACCT, CONFIG_TASK_IO_ACCOUNTING)
[root@PogoV3oxnas ~]# uname -a
Linux PogoV3oxnas 4.1.0-oxnas-tld-1 #3 SMP PREEMPT Wed Jul 1 05:11:47 PDT 2015 armv6l GNU/Linux

I also need to get this figured out because..... I've been watching the pogo v3, mini pcie USB3 conversation. That led me to thinking about possibly trying this a mini pcie sata 6G card. If the processor becomes a bottle neck with USB to sata conversion, I thought this may possibly reduce it?