On Tue, 20 Sep 2005, Alex van den Bogaerdt wrote: > On Tue, Sep 20, 2005 at 03:31:54PM -0400, Gregory (Grisha) Trubetskoy wrote: > >> I am contemplating on how to best track uptime in an RRD.
[snip] >> So I'm thinking of setting up a GAUGE with values from 0 to 100, [snip] > No need to do 0 and 100. 0 and 1 will also do (0.9997 in stead of 99.97%) > although 0 and 100 aren't bad either. > > If possible at all: try to write fractions of 100 (or 1) when you detect > downtime somewhere in the interval but not right now. Could you elaborate on this last point? You mean that if I have knowledge that half of the interval it was up, then write 50%? I plan on taking samples every minute. Rather, our system works by expecting a heartbeat packet from a server once every 60 seconds, and when no packet arrives for more than 70 seconds, I will record a 0 uptime at that time. It will keep writing 0 every minute until the first packet arrives, then it will writ 100%. I will set the -step to 60 seconds as well. Since I'm looking at uptime over last 30 days or more, I think this should be fairly accurate without having to adjust for fractions of a minute here and there? Thanks a million for taking the time to respond! Grisha -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/rrd-users WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
