Daniel, Our tuning guides specifically recommend disabling swap. If your machine is so memory-starved that it needs to use swap during normal Riak operation, having it on is only going to make things worse.
http://docs.basho.com/riak/latest/ops/tuning/linux/#Storage-and-File-System-Tuning On Thu, Feb 19, 2015 at 11:29 AM, Daniel Iwan <iwan.dan...@gmail.com> wrote: > We are using levelDB as backend without any tuning. > Also we are aware that performance may suffer due to potentially storing > some of the copies (n=3) twice on the server. We are not so much concerned > about latencies caused by that. > What is worrying though is almost unbounded growth of swap used, which > essentially filled up our system disk. > Probably our Riak instances require some tuning but I would like to know > first why we need to tune it e.g. AAE consumes large swap. > > Regarding failure scenarios. We've seen OS' oom-killer nuking beam.smp and > also our process due to the failure of memory allocation. So far we haven't > experienced situation where killing one node would cause cascading failures > of the nodes. > > We were slightly reluctant to upgrade to 1.4 due to some AAE issues > reported > on the mailing list. > I was under impression 1.4 may consume even more memory with AAE but I may > be totally wrong here. > > Daniel > > > > > > > > -- > View this message in context: > http://riak-users.197444.n3.nabble.com/Riak-1-3-1-high-swap-usage-tp4032649p4032662.html > Sent from the Riak Users mailing list archive at Nabble.com. > > _______________________________________________ > riak-users mailing list > riak-users@lists.basho.com > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > -- Sean Cribbs <s...@basho.com> Sr. Software Engineer Basho Technologies, Inc. http://basho.com/
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