Hello list,<br><br>my current collectd (v4.10) installation is using rrdcached (rrdtool 1.4.4), which worked fine<br>so far. But with the number or hosts growing beyond 1000 it seems to have a negative impact<br>on my central collectd server.<br>
<br>I´ve 37 GB of data (residing in a RAM-disk), plus 12 GB of journal data. Each hosts has a<br>minimum of nine plugins activated, but max is only two or three more on some special boxes.<br><br>the problem is that collectd data seems to lag "behind" the longer collectd/rrdcached is running.<br>
this accumulates up to three hours a day until the daily restart kicks in. An example, I see data<br>from 12h when I look at graphs at 15h.<br><br>this was not a problem with fewer hosts (< 900), it´s been getting worse with more and more hosts.<br>
<br>I´ve only specified the number of write_threads so far (=16), but no other parameters.<br><br>do you have any suggestion for me?<br><br>thanks<br>,<br>Stefan<br><br><br>