The connection between servers is 10MBytes / sec not 10Mbit / sec. One row of data looks like this: 3098191 78 daz...@gmail.com 55942 dzt 1 home 2011-05-31 16:22:10 2011-09-07 17:03:48 127.0.0.1 1 1
I use Protobuf transport. If dw = 0 and w = 0 there is no wait for other replica nodes, right ? This should improve the write speed, correct ? On Sun, Nov 20, 2011 at 2:21 PM, Erik Søe Sørensen <e...@trifork.com> wrote: > This depends quite a bit on the sizes of your objects. > Supposing an average size of 2KB, and n=3: on each write, on average 1.5 > of the replicas would be on the other node, implying inter-node network > traffic of 1.5*2KB=3KB (and this is just in one direction). > If your inter-node network connection is indeed 10Mbit ~ 1MB/s, then 300 > writes/s * 3KB = 0.9MB/s would just about saturate the connection. > > You may want to check the network utilization. > ________________________________________ > From: riak-users-boun...@lists.basho.com [ > riak-users-boun...@lists.basho.com] On Behalf Of Catalin Constantin [ > daz...@gmail.com] > Sent: 20 November 2011 11:10 > To: riak-users@lists.basho.com > Subject: slow 2 node cluster > > Hello, > > I am trying to evaluate / run some tests on a 4 mil dataset. > I have 2 nodes setup (different machines - 8GB ram each, I7 cpus). > 10 MB connection between them. > > I am trying to insert data into riak using w=1 and dw=1 (also tried with > dw = 0, w = 0). > For each risk object i have 4 indexes (2 binary 2 int). > Riak backend is leveldb. > > I can't get more than 300 inserts per second. > I have also tried running 2 threads each hitting the different node. > Nothing changed too much. > > Is this normal behavior ? > > -- > Catalin Constantin > > -- Catalin Constantin Dazoot Software http://www.dazoot.eu/
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