We have deployed a 4 node riak cluster on AWS with eLevelDB backend. We have
been benchmarking it for last couple of days using basho-bench, with
_unimpressive_
results. Attached "app.config" and "basho-bench.config".

Following are the only changes made to "vm.args"

## Enable kernel poll and a few async threads
+K true
+A 16

We did following two tests.


Test 1

4 nodes m1.medium instances, XFS 50G EBS with RAID10 on Ubuntu 12.04 AMI
50 concurrent connections for 5 hours
HTTP Raw Driver
Only Inserts (since we are expecting very heavy writes)

Click on the following link to view the performance graph generated through
R.
https://www.dropbox.com/s/2a64jvpf4w00487/Test1.png

Test 2

4 nodes m1.medium instances, XFS with default ~340G Ephemeral on Ubuntu
12.04 AMI
50 concurrent connections for 5 hours
HTTP Raw Driver
Only Inserts (since we are expecting very heavy writes)

Click on the following link to view the performance graph generated through
R.
https://www.dropbox.com/s/ou8j03gvd36xo9h/Test2.png


-- 
With Regards
Abhishek Amberkar

Attachment: app.config
Description: Binary data

Attachment: bench.config
Description: Binary data

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