One question that pops into my mind is are these numbers averages over 3 or 5 runs or is this a single run?
In my experience with EC2, I've run into I/O inconsistencies when I'm using anything less than 1TB drives and a large instance. There's a lot of potential for a noisy neighbor to steal I/O or CPU, or memory on the host OS which will put pressure on all other guests. --- Jeremiah Peschka - Founder, Brent Ozar PLF, LLC Microsoft SQL Server MVP On Aug 12, 2011, at 2:23 AM, Maria Neise wrote: > Hey, > I am doing some benchmarks with Riak and set up a cluster with 6 > server using Amazon EC2. On each server I have GB of data. I am using > Bitcask as backend and the Java-API for my client. I have some > workloads with different proportion of operations, for example insert, > read and update. I started a workload with 95% read and 5% update and > achieved a throughput of 1207 operations/second. When I tried out > another workload with 100% read I only got 228 ops/sec. But I thought > Riak would be faster with reads than with updates. I would appreciate > if you could give me a hint, why Riak achieves a higher throughput > when doing updates and inserts mixed with reads. > Thank you in advance. > Cheers, > Maria > > _______________________________________________ > riak-users mailing list > riak-users@lists.basho.com > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
