I can't imagine you need that level of granularity. And if you keep any substantial history your RRD database will be quite large.
I use a 60 second step for production, and I've never felt I needed higher resolution. If I've got some problem that's occuring at intervals of less than one minute, I'm probably going to be using wireshark or something else real-time to capture it and evaluate it. Obviously you'll have to decide yourself what level of granularity you need, but IMO, going with a 5 second poll is way overkill.
I'm not even sure that SP can handle a sub 60 second step - it seems I tinkered with a 30 second poll and it wigged out - but that's been a long time ago and my recollection is fuzzy.
I'd guess if you live with a >=60 sec poll, most of the issues you're complaining about go away.
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That said:
There are things you can do to change the fping's behavior, see the "-T", "-t", "-n" and "-p" options.
By sending pings faster, closer together, not waiting for replies as long etc, you can pump more of them out.
This can obviously cause *lots* of other problems and impact the accuracy and utility of fping and smokeping, but may be appropriate in some cases. [I assume you're attempting to measure very high-speed links and thus the reason for <60 second polls, in which case, running fping in a very high-performance mode may make sense. If you do this to a DSL connection, for example, expect completely bogus/wrong/misleading results.]
I think there are similar things you can do with TCPPing, but can't recall.
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Given your DB settings, you're keeping ~53 hours of full res data, but only 3 days of 60 sec data, and 6 days of 12min data. Seems really odd choices for data retention to me... Smokeping is really not intended, IMO, to be a real-time, very-short granularity tool. It's strength is moderate granularity and long-term data retention that allows you to see trends and long-term patterns. So, I think you're using the tool in ways it was never intended to be used and are having problems as a result.
It would be like using MTRG with a 1 second poll.
HTH
-Greg
Hi, I'm currently trying to configure a smokeping server for diagnostic of our network. I have manage to make it work but I'm having a couple of issues : 1) How can I reduce the number of ping without getting this error when smokeping generate the graph (In this example, I have set the config to 10 pings) : "ERROR: No DS called 'ping11' in <rrd file> 2) The other problem is with the performance of tcpping or fping. The probe is working but it take too long to complete. As my step is 5 second, I need the probe to be as quick as possible. Sure, if I can reduce the number of ping, I will gain some time. The concurentprobes variable is on (tried off too). I currently have 30 targets running with Fping, wich complete in 5 sec (limit for the 5 sec of my interval). If I switch to TCPPing, it take 42 sec. My config: *** Database *** step = 3 pings = 5 # consfn mrhb steps total AVERAGE 0.5 1 38400 AVERAGE 0.5 12 4320 MIN 0.5 12 4320 MAX 0.5 12 4320 AVERAGE 0.5 144 720 MAX 0.5 144 720 MIN 0.5 144 720 *** Presentation *** template = /opt/smokeping/etc/basepage.html + overview width = 600 height = 50 range = 1h + detail width = 600 height = 200 unison_tolerance = 2 "Last 3 Hours" 3h "Last 30 Hours" 30h "Last 10 Days" 10d "Last 400 Days" 400d *** Probes *** + TCPPing binary = /usr/bin/tcpping forks = 500 offset = random step = 3 timeout = 2 pings = 5 port = 22 + FPing binary = /usr/sbin/fping blazemode = true hostinterval = 0.001 mininterval = 0.001 offset = random packetsize = 12 pings = 5 step = 3 timeout = 1.5 The machine : model name : Intel(R) Xeon(R) CPU X5660 @ 2.80GHz MemTotal: 1922436 kB The OS : CentOS release 6.5 (Final) Linux 2.6.32-431.11.2.el6.x86_64 #1 SMP Tue Mar 25 19:59:55 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux The App: SmokePing-2.6.9 fping: Version 3.10 tcpping v1.7 Richard van den Berg RRDtool 1.3.8 ___________________ Louis |
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