launchpad-dev team mailing list archive

[Robert Collins <robert.collins@xxxxxxxxxxxxx>]

On Thu, Nov 25, 2010 at 3:36 AM, Stuart Bishop
<stuart.bishop@xxxxxxxxxxxxx> wrote:
> On Wed, Nov 24, 2010 at 7:42 PM, Jonathan Lange <jml@xxxxxxxxxxxxx> wrote:
>
>> Some perhaps silly questions:
>>  * Do we currently have one appserver process per physical server,
>> with that appserver providing multiple threads?
>
> We have more than one appserver per core, each appserver running
> multiple threads.

Indeed, many threads :).

>>  * When I want parallelism in Python, I run multiple processes. Are
>> we doing that with lpnet? Is that even relevant here?
>
> We run multiple appservers per core. Appserver CPU utilization seems
> to sit around 85% spiking up to 96% during peak times so I'm not sure
> what we gain as running more single threaded instances doesn't grow us
> extra cores.

We gain better responsiveness.

(Responsiveness/Throughput/Efficiency - choose any two).

-Rob