[collectd] collectd versus rrdcollect-remote rrdtool [network] IO
Greg
greg at easyflirt.com
Tue Jan 20 14:03:13 CET 2009
Florian,
> You restared collectd, right? You can check the current queue length
>
Sure:
epoc-02:/usr/src# ps auxw | grep collectd
root 12366 0.0 0.0 2632 296 ? Ss 11:10 0:00
/usr/sbin/collectdmon -P /var/run/collectdmon.pid -- -C
/etc/collectd/collectd.conf
root 12367 6.6 1.0 187680 42228 ? Sl 11:10 0:39
collectd -C /etc/collectd/collectd.conf -f
root 12751 0.0 0.0 4404 732 pts/1 S+ 11:20 0:00 grep
collectd
epoc-02:/usr/src# /etc/init.d/collectd restart
Restarting statistics collection and monitoring daemon: collectd ..
epoc-02:/usr/src# ps auxw | grep collectd
root 12808 0.0 0.0 2636 300 ? Ss 11:21 0:00
/usr/sbin/collectdmon -P /var/run/collectdmon.pid -- -C
/etc/collectd/collectd.conf
root 12809 9.0 0.7 175048 29440 ? Sl 11:21 0:00
collectd -C /etc/collectd/collectd.conf -f
root 12831 0.0 0.0 4400 728 pts/1 S+ 11:21 0:00 grep
collectd
> using something like that:
> netstat -ln | grep Recv-Q; while sleep 1; do netstat -ln | grep 25826; done
>
I have increased again to:
net.core.rmem_default = 1048576
net.core.rmem_max = 16777216
It helps, but I still have missing values.
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 133280 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 146608 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 62832 0 10.0.0.11:25826 0.0.0.0:*
udp 175168 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
udp 0 0 10.0.0.11:25826 0.0.0.0:*
> If the queue is always empty, the problem is somewhere else.
>
> Can you tell me a bit more about the machine you're using and how many
> RRD files you're updating? How much memory do you have? How many CPUs
> are installed? And so on ;)
>
5938 RRD files
4GB RAM
8 cores @2.4GHz
2x 146GB SAS 10K 2.5" RAID1
ext3 with default mount options, no tuning
--
Greg
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