I absolutely agree. That is why we've change the setting vm.swappiness to 1
so it swaps only when absolutely necessary. I think we underestimated how
much swap may be needed, but I also don't understand why so much hungry on
memory.
Is there a particular activity, like 2i queries, AAE or levelDB c
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
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, wh
Daniel, you may be aware of this, but a 3-node Riak cluster is not
recommended and may be playing a minor role in your resource problems.
Every request will hit every server (except for some requests that are
being made twice against a single server, making I/O that much worse), and
depending on yo
> On Feb 19, 2015, at 9:05 AM, Daniel Iwan wrote:
>
> Hi
> On 3 node cluster Ubuntu 12.04, nodes 8GB RAM all nodes show 6GB taken
> beam.smp, 2GB by our process.
> beam started swapping and currently is using 23GB of swap space.
> vm.swappiness is set to 1
> We are using ring 128. /var/lib/ria
