Opened 16 years ago
Last modified 16 years ago
#18 closed defect
+/- 50% of the time the count drops to 0 — at Version 4
| Reported by: | richardvm | Owned by: | Richard (vm) |
|---|---|---|---|
| Priority: | major | Milestone: | Pings |
| Component: | component1 | Version: | |
| Keywords: | Cc: |
Description (last modified by )
Change History (5)
comment:1 by , 16 years ago
comment:2 by , 16 years ago
This incident applies not only to the ping test, but also the the cacti native rrd interface statistics.
interface statistics is a "counter" which means that the actual value is the difference between the current value and the previous value. If the value is not inserted into the rrd file then my logic would be that the first value after the 'no check period' would be very high, which it is not.
The 'no check period' is always the same, so I will have to lookup the get procedure of rrd (probably can be done with rrdtool)
comment:3 by , 16 years ago
| Description: | modified (diff) |
|---|
comment:4 by , 16 years ago
| Description: | modified (diff) |
|---|
One of the graphs (rrdtool fetch azc_traffic_in_1613.rrd AVERAGE -s -2h)
...
1241897400: 1.5591945207e+03 2.2444359957e+03
1241897700: nan nan
1241898000: nan nan
1241898300: 1.6361655405e+03 1.9750202703e+03
1241898600: 1.6696424325e+03 2.1054766135e+03
1241898900: 1.4608537213e+03 2.0426633878e+03
1241899200: 1.5143774415e+03 2.4638730906e+03
1241899500: 1.8531089083e+03 2.4594400432e+03
1241899800: 1.8384700158e+03 2.5726516934e+03
1241900100: 1.7522683405e+03 1.9195866798e+03
1241900400: 1.7933418267e+03 2.7530849702e+03
1241900700: 1.7369725033e+03 2.1307419069e+03
1241901000: 1.7910664136e+03 2.1220945831e+03
1241901300: nan nan
1241901600: nan nan
1241901900: 1.7926040268e+03 1.9684093960e+03
1241902200: nan nan
Started a cronjob which adds static data to a rrd file, to isolate the incident.
This one is not shown in the graphs:
/usr/local/share/cacti/log/cacti.lo
03/27/2009 08:01:35 AM - CMDPHP: Poller[0] Host[7631] DS[500] CMD: /usr/bin/perl /usr/local/share/cacti/scripts/ping.pl Joost.wleiden.net 2 public 161 5000 get 2 3, output: 5
<output omitted>
03/27/2009 08:01:36 AM - POLLER: Poller[0] CACTI2RRD: /usr/local/bin/rrdtool update /usr/local/share/cacti/rra/joost_pings_500.rrd --template Pings 1238137291:5
/var/log/cacti.log
03/27/2009 08:01:36 AM - POLLER: Poller[0] CACTI2RRD: /usr/local/bin/rrdtool update /usr/local/share/cacti/rra/joost_pings_500.rrd --template Pings 1238137291:5
OK u:0.01 s:0.01 r:95.90