iPerf3 - performance monitoring for Tablo for buffering issues


#1

Not sure if folks know this or use it, but the Tablo does have a valid iperf3 instance that runs constantly. It’s been incredibly useful for me to diagnose a broken wifi segments. iperf was written by a few friends of ours at the department of energy. We used to use it to diagnose national long haul 100GBit/s network links - very useful, many options. You can spin up multiple threads with -P also to test throughput and emulate multiple clients.

http://software.es.net/iperf/index.html

Here’s some example output from our Tablo from a wireless client - we can stream 8mbit/s 1080p to at least three televisions or devices around the house with this level of output on an 802.11AC network. Basically, if you don’t get good numbers from iperf3 you end up with a miserable experience. I learned the hardway and found a broken wireless AP on our network that just wasn’t cutting it.

Hope this helps!

jcair:~ jcuff$ iperf3 -c 192.168.0.157
Connecting to host 192.168.0.157, port 5201
[  5] local 192.168.0.136 port 57750 connected to 192.168.0.157 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  5.60 MBytes  47.0 Mbits/sec                  
[  5]   1.00-2.00   sec  5.44 MBytes  45.6 Mbits/sec                  
[  5]   2.00-3.00   sec  5.55 MBytes  46.5 Mbits/sec                  
[  5]   3.00-4.00   sec  4.90 MBytes  41.1 Mbits/sec                  
[  5]   4.00-5.00   sec  4.76 MBytes  40.0 Mbits/sec                  
[  5]   5.00-6.00   sec  5.32 MBytes  44.6 Mbits/sec                  
[  5]   6.00-7.00   sec  5.49 MBytes  46.1 Mbits/sec                  
[  5]   7.00-8.00   sec  5.31 MBytes  44.5 Mbits/sec                  
[  5]   8.00-9.00   sec  5.27 MBytes  44.2 Mbits/sec                  
[  5]   9.00-10.00  sec  5.01 MBytes  42.1 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.00  sec  52.7 MBytes  44.2 Mbits/sec                  sender
[  5]   0.00-10.00  sec  52.5 MBytes  44.1 Mbits/sec                  receiver

iperf Done.

New firmware causing lots of Tablo drops from network
#2

This. Awesome sauce.


#3

Plus 1, and new users to iperf3 should run with and without the “-R” flag to test the bandwidth from and to your Tablo DVR :slight_smile: