I used ephemeral storage without any improvement. Also iotop and iostat did not show any saturation.
After talking with Sean Cribbs on IRC, I tried disabling nagle in riak config, changed IO scheduler to noop, decreased cache size to 1 MB from 372 MB, removed load balancer. After doing all this too, there was absolutely no change in throughput. For Basho bench, I used examples/riakc_pb.config. On Tuesday, June 26, 2012, Reid Draper <reiddra...@gmail.com> wrote: > > On Jun 26, 2012, at 11:48 AM, David Smith wrote: > >> What does your basho_bench config file look like? >> >> Seeing a low number of ops/sec is usually an indicator that you're >> hitting a bottleneck on the I/O path -- typically due to random reads. >> LevelDB has a number of characteristics that can make this worse -- >> what happens if you use bitcask? >> >> D. >> >> On Tue, Jun 26, 2012 at 4:57 AM, Yousuf Fauzan <yousuffau...@gmail.com> wrote: >>> Hello, >>> >>> Here is my setup of Riak 1.1.4 >>> >>> 5 Nodes >>> ami-a29943cb (EC2 AMI) >>> m1.large (7.5GB Ram, 4 EC2 compute instances) >>> EBS storage > I'd recommend giving ephemeral storage a shot as well. It tends to have significantly less variable performance than EBS. >>> LevelDB backend >>> Python Client with Protobuf (on a separate machine) >>> >>> While loading data I am getting around 50 ops/sec. >>> >>> I tried running basho benchmark on the setup and it showed 100 ops/sec >>> throughput. >>> >>> After talking to people or Riak IRC, I realized that upwards of 1.5K ops/sec >>> is what I should be getting. >>> >>> Could anyone help me in figuring out what I am doing wrong? >>> >>> >>> Thanks, >>> >>> Yousuf >>> >>> >>> _______________________________________________ >>> riak-users mailing list >>> riak-users@lists.basho.com >>> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com >>> >> >> >> >> -- >> Dave Smith >> VP, Engineering >> Basho Technologies, Inc. >> diz...@basho.com >> >> _______________________________________________ >> riak-users mailing list >> riak-users@lists.basho.com >> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > >
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