[openstack-dev] [openstack-operators][qa][Rally] Thoughts on removing half of Rally benchmark scenarios

Mikhail Dubov mdubov at mirantis.com
Sun Jan 18 16:18:24 UTC 2015

Hi Boris,

I understand your concern about keeping the number of different benchmark
scenarios in Rally not too big so that users don't get confused. But what I
really like now about benchmark scenario names in Rally is that they are
highly declarative, i.e. you read them and you have a clear idea of what's
going on inside those scenarios. You see "boot_and_delete_server" => you
know that Rally will boot and then delete a server, "boot_server" => only
boot a server.

That's very convenient e.g. when you navigate through Rally report pages:
you see the scenario names in the left panel and you know what to expect
from their results. It seems to me that, if we merge scenarios like
and "boot_and_delete_server" together, we will lose a bit in clarity.

Besides, as you pointed out, "Nova.boot_server" and
are used for two different purposes - seems to be indeed a strong reason
for keeping them separated.

Best regards,
Mikhail Dubov

Engineering OPS
Mirantis, Inc.
E-Mail: mdubov at mirantis.com
Skype: msdubov

On Sat, Jan 17, 2015 at 8:47 PM, Boris Pavlovic <boris at pavlovic.me> wrote:

> Hi stackers,
> I have an idea about removing almost half of rally scenarios and keep all
> functionality.
> Currently you can see a lot of similar benchmarks like:
> NovaServers.boot_server                      # boot server with passed
> arguments
> NovaServers.boot_and_delete_server  # boot server with passed arguments
> and delete
> The reason of having this 2 benchmarks are various purpose of them:
> 1) Nova.boot_server is used for *volume/scale testing*.
> Where we would like to see how N active VM works and affects OpenStack API
> and booting next VMs.
> 2) Nova.boot_and_delete_server is used for *performance/load* testing.
> We are interested how booting and deleting VM perform in case on various
> load (what is different in duration of booting 1 VM when we have 1, 2, M
> simultaneously VM boot actions)
> *The idea is to keep only 1 boot_server and add arguments "do_delete" with
> by default False. *
> It means that:
>  # this is equal to old Nova.boot_server
> NovaServers.boot_server: [{"args": {...} }]
> # this is equal to old Nova.boot_and_delete_server
> NovaServers.boot_server: [{"args": {..., do_delete: True}]
> Thoughts?
> Best regards,
> Boris Pavlovic
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