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