On 12/13/2013 02:28 PM, Jay Pipes wrote:
On 12/13/2013 08:14 AM, Neependra Khare wrote:
On 12/12/2013 12:00 PM, Neependra Khare wrote:
On 12/12/2013 01:11 AM, Adam Young wrote:
Can you indicate which is going to be your first effort? We
(Keystone team) can provide some guidance on how to best hammer on it.
Thanks. I am starting by identifying any CPU, Disk, Memory or
Database bottlenecks.
I have listed down the methodology I'll be following for this test:-
https://wiki.openstack.org/wiki/KeystonePerformance#Identify_CPU.2C_Disk.2C_Memory.2C_Database_bottlenecks
Hi Neependra,
My first suggestion would be to rework the performance benchmarking
work items to have clearer indications regarding *what are the metrics
being tested* in each work item.
For example, the first work item is "Identify CPU, Disk, Memory, and
Database Bottlenecks".
The first test case listed is:
"Test #1, Create users in parallel and look for CPU, disk or memory
bottleneck."
Here is a script you can modify.
adam.younglogic.com/2013/12/load-keystone-user/
I think that is a bit too big of an initial bite ;)
Instead, it may be more effective to instead break down the
performance analysis based on the metrics you wish to test and the
relative conclusions you wish your work to generate.
For example, consider this possible work item:
"Determine the maximum number of token authentication calls that can
be performed"
Within that work item, you can then further expand a testing matrix,
like so:
* Measure the total number of token authentication calls performed by
a single client against a single-process, Python-only Keystone server
* Measure the total number of token authentication calls performed by
a single client against a multi-process Keystone server running inside
an nginx or Apache container server -- with 2, 4, 8, 16, and 32
pre-forked processes
* Measure the above using increasing numbers of concurrent clients --
10, 50, 100, 500, 1000.
There's, of course, nothing wrong with measuring things like CPU, disk
and I/O performance during tests, however there should be a clear
metric that is being measured for each test.
My second suggestion would be to drop the requirement of using RDO --
or any version of OpenStack for that matter.
In these kinds of tests, where you are not measuring the integrated
performance of multiple endpoints, but are instead measuring the
performance of a single endpoint (Keystone), there's no reason, IMHO,
to install all of OpenStack. Installing and serving the Keystone
server (and it's various drivers) is all that is needed. The fewer
"balls up in the air" during a benchmarking session, the fewer
side-effects are around to effect the outcome of the benchmark...
Best,
-jay
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