Hi, Those are probably GC pauses. Memory tuning is probably needed. Check the parameters that you already have customised if they make sense.
http://blog.mikiobraun.de/2010/08/cassandra-gc-tuning.html <http://blog.mikiobraun.de/2010/08/cassandra-gc-tuning.html> Hannu > On 23 Feb 2016, at 16:08, Joel Samuelsson <samuelsson.j...@gmail.com> wrote: > > Our nodes go down periodically, around 1-2 times each day. Downtime is from > <1 second to 30 or so seconds. > > INFO [GossipTasks:1] 2016-02-22 10:05:14,896 Gossiper.java (line 992) > InetAddress /109.74.13.67 <http://109.74.13.67/> is now DOWN > INFO [RequestResponseStage:8844] 2016-02-22 10:05:38,331 Gossiper.java (line > 978) InetAddress /109.74.13.67 <http://109.74.13.67/> is now UP > > I find nothing odd in the logs around the same time. I logged a ping with > timestamp and checked during the same time and saw nothing weird (ping is > less than 2ms at all times). > > Does anyone have any suggestions as to why this might happen? > > Best regards, > Joel
