Hi Tobi, Tobias Oetiker wrote: > Hi Leo, > > Today Leos Bitto wrote: > > >>Hello everybody, >> >>I have succesfully set up SmokePing 2.0rc5 with RRDtool 1.2.11, and >>sudddenly I found that the resolution of my gathered data (I run FPing >>every 60 seconds) is lower when viewing older data. I think that I found >>what is causing this: it's the parameter "AVERAGE 0.5 1 1008" in the >>configuration file. If I understand it correctly, it means that the data >>with my desired resolution (1 minute) are kept only for the 1008 last >>occurences (meaning less than 17 hours). Older data are available only >>with resolution 12 minutes (covered by "AVERAGE 0.5 12 4320"), and I >>guess that even older data (older that 12*4320 minutes) would be >>available with resolution 144 minutes (covered by "AVERAGE 0.5 144 >>720"). Here are my questions: > > > ... la suiss 12 points >
I don't understand whether 12 points is enough, but as I don't see any objections, I think that I got it all right. > > >>1) Are there any limitations when choosing those RRDtool database >>parameters? Currently I am aware of the disk space requirements only. > > > there is the long int limit an RRA can not have more than 2^32 rows (or > columns) > That's cool, I can easily live with this. I was afraid about some more restrictive rules - like that some number would need to be multiplier of some other number, etc. > >>2) How can those RRDtool database parameters be configured differently >>for different hosts (when using the FPing probe)? > > > currently this setting is global, you would have to run separate > smokeping instances ... > I knew about the ability to run multiple instances (I already did this, but for other reasons), I just hoped that this could be done with one instance only. Now I guess that with careful configuration I could use multiple instances of the daemon only, point them to the same datadir, and share one cgi script (which would need another configuration file, basically a union of all the daemons' configuration) to generate one web page. However, having those parameters overridable at the host level would definitely be a nice feature for some future version of SmokePing. > >>3) What needs to be done to keep the data which I have already gathered >>when I decide to change those RRDtool database parameters? > > > you can use rrdtool resize to change existing rrd files > That seems easy. I could have found this myself, but I am using RRDtool since a week ago only (after I found and started using SmokePing), so please be patient with my basic questions. Thanks a lot for your quick and accurate information, and thanks even more for such a nice piece of software! Leos -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/smokeping-users WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
