What happen if the server is up but you have a slow net or a slow
collector? Here is a live sample. I had a program do pings and
give me rtt results. Normally it can finish a list of task within
5 minutes. It will switch to 10 minutes interval or even 15 minutes
interval if things are slow. Now since all my data are out of
heartbeat range, I end up have no data at all.
I think we ought to separate the heartbeat requirement baseed on
data type. Yes, it makes no sense to continue the normal calculation
on the COUNTER after a few hours black out.
Min
In message <[EMAIL PROTECTED]>, Tob
ias Oetiker writes:
>Today you sent me mail regarding Re: [rrd-developers] Re: Restarting devices :
>
>*> >rrdtool only comes up with NaN for an interval if more than Minimal requir
>ed
>*> >heartbeat seconds of the interval are UNKNOWN ...
>*>
>*> Tobi,
>*>
>*> Can I request an option to ignore heartbeat when it set to 0 or -1?
>*> Something like:
>*> 287,289c287
>*> < rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt >= interval &&
>*> < rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt >0
>*> < ) {
>*> ---
>*> > rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt >= interval) {
>*> 393,394c391
>*> < > rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt
>*> < && rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt > 0 ) ||
>*> ---
>*> > > rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt) ||
>*>
>*> I can understand for those data types related to delta time, it is
>*> necessary to save guard the data by using heartbeat. However, some
>*> absolute data such as CPU/memory usage, the right action is to round
>*> the timestamp upto the closest step, instead of losing data by NaN. I
>*> don't think raising the heartbeat(what I do) is the answer.
>
>ok think of this ... your server goes down and you are not able to collect
>performance data for several hours ... what should rrdtool do (assuming you
>normally collect every 5 minutes ...
>
>cheers
>tobi
>*>
>*> Min
>*>
>*>
>
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