Thanks,
it's interesting to hear of what performance other people are achieving
with Riak.
With a not-too-dissimilarly-configured[1] basho_bench test, we see
throughput between 6000-7000 ops/sec. get/put latencies are under 2/4ms
respectively for mean values, and under 6/12ms for 99th percentile.
This is on real (non-virtual) hardware, but not high-end gear.
Hopefully we're not too too far off what can reasonably be achieved.
-T
[1: Test parameters:
{concurrent, 16}.
{driver, basho_bench_driver_riakc_pb}.
{key_generator, {int_to_bin, {uniform_int, 10000}}}.
{value_generator, {fixed_bin, 10000}}.
{riakc_pb_replies, 1}.
{operations, [{get, 3}, {put, 1} ]}.
]
On 28/10/13 06:35, Alex Rice wrote:
Here is an updated 2 hour graph of the same "X-Small" 5-node cluster,
after having performed all the Linux tuning steps I had missed first
time around. Also added ntpd service to all nodes. Looks like slightly
better throughput & latency, but a much cleaner graph overall, and it
should "burst" much better:
https://dl.dropboxusercontent.com/u/22076075/summary-xsmall-bitcask-5nodes-2hr-tuned-vm.png
Here is the same cluster rebooted as "Medium" Azure VMs, same
benchmark settings except: 8 workers, shorter duration. Not sure why
it has errors, yet:
https://dl.dropboxusercontent.com/u/22076075/summary-medium-bitcask-5nodes-30-min.png
Anyways- back to work for me!!!
:)
On Wed, Oct 2, 2013 at 12:14 PM, Alex Rice <a...@mindlube.com> wrote:
Hey, something that is impressive about Riak is how well it performs
even on super low end cloud virtualization (unlike for example,
couchbase, which hardly runs at all unless you have quad cores per
each node)
Having so much fun benchmarking, it's really distracting me from coding!
the cluster : 5 nodes on Windows Azure cloud
Ubuntu 12.04, Riak 1.2.4
node are xsmall vm (1 shared cpu core, 768 mb ram)
The xmall vms are only $15/month and they are not recommended for
"production". but in a 5 node riak cluster, it's really nothing to
scoff at!
I suspect the main bottleneck is not the cpu or disk, rather I think
it's the each xsmall node is allowed only 5Mbit/sec on the ethernet.
Here is a basho_bench graph, if anyone feels like viewing it
https://dl.dropboxusercontent.com/u/22076075/summary-xsmall-bitcask-5nodes-20min.png
note the basho bench was running on a quad core machine on the same
vlan with 5 workers.
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