Hello

My graph show me dot instead beautifull lines, so i look to /var/log/hobbit/rrd-status.log and i saw that (sample for Download check) :

"RRD error updating /var/lib/hobbit/rrd/raspberrypi/speedtest,Download.rrd from 192.168.10.1: /var/lib/hobbit/rrd/raspberrypi/speedtest,Download.rrd: illegal attempt to update using time 1459527862 when last update time is 1459527862 (minimum one second step) "

with rrdtool dump /var/lib/hobbit/rrd/raspberrypi/speedtest,Download.rrd, i see (hope cut are at the good place)

[...] <step>300</step> <!-- Seconds --> [...] <name> lambda </name> <type> GAUGE </type> <minimal_heartbeat>600</minimal_heartbeat> <min>NaN</min> <max>NaN</max>

 <database>
                    <!-- 2016-03-30 19:15:00 CEST / 1459358100 -->
            <row><v>NaN</v></row> <!-- 2016-03-30 19:20:00 CEST /
            1459358400 --> <row><v>NaN</v></row> 

[...] <!-- 2016-03-30 20:45:00 CEST / 1459363500 --> <row><v>8.7852800000e+01</v></row> [...]

It seem there 'NaN' (Not a Number) if the new value is the same as the previous value. I didn't change refresh (default : 5 minutes)

My ncv values, are write like that first values are convert to integer, the other are the real values: Ping: 39 Download: 80 Upload: 19 [blahblah] contenu de /home/debit/data/speedtest-20160401-1817 : Ping: 38.97 ms Download: 79.68 Mbit/s Upload: 19.20 Mbit/s

I suppose the Ping, Download, Upload are forgiven because *:NONE in the ncv definition (see below)

/etc/hobbit/hobbitgraph.d/speedtest.cfg TITLE SpeedTest YAXIS ms DEF:PING=speedtest,Ping.rrd:lambda:AVERAGE DEF:DOWLOAD=speedtest,Download.rrd:lambda:AVERAGE DEF:UPLOAD=speedtest,Upload.rrd:lambda:AVERAGE LINE2:PING#00ff33:Ping GPRINT:PING:LAST: \: %5.0lf (cur) GPRINT:PING:MAX: \: %5.0lf (max) GPRINT:PING:MIN: \: %5.0lf (min) GPRINT:PING:AVERAGE: \: %5.0lf (avg)\n LINE2:DOWLOAD#ff3300:Download GPRINT:DOWLOAD:LAST: \: %5.0lf (cur) GPRINT:DOWLOAD:MAX: \: %5.0lf (max) GPRINT:DOWLOAD:MIN: \: %5.0lf (min) GPRINT:DOWLOAD:AVERAGE: \: %5.0lf (avg)\n LINE2:UPLOAD#3300ff:Upload GPRINT:UPLOAD:LAST: \: %5.0lf (cur) GPRINT:UPLOAD:MAX: \: %5.0lf (max) GPRINT:UPLOAD:MIN: \: %5.0lf (min) GPRINT:UPLOAD:AVERAGE: \: %5.0lf (avg)\n

/etc/hobbit/hobbitserver.d/speedtest.cfg TEST2RRD="$TEST2RRD,speedtest=ncv" SPLITNCV_speedtest="Ping:GAUGE,Download:GAUGE,Upload:GAUGE,*:NONE" GRAPHS="$GRAPHS,speedtest"

So what wrong ? lots of information but i'm not understang all of them (maybe my english is to bad ?)