Re: Questions about subsystems and performance (both in general and specific to Tomcat)

[Evan Harris <auctionitis@xxxxxxxxx>]

Actually at 7.1 you can now limit processor use at the subsystems
using a Workload Group. The capability is limited to how many cores a
job/subsystem can utilise. See this Developer Works article for more
information:

https://www.ibm.com/developerworks/mydeveloperworks/wikis/home?lang=en#/wiki/IBM%20i%20Technology%20Updates/page/IBM%20i%20workload%20groups


On Sat, Apr 14, 2012 at 4:46 AM, Jim Oberholtzer
<midrangel@xxxxxxxxxxxxxxxxx> wrote:
> In order:
>
> Processor is not allocated at the subsystem level, rather at the
> partition level.  While there are methods to control how much memory is
> used by a subsystem and its jobs, there is no way I am aware of (at this
> point) to control processor at the subsystem level.
>
> Any subsystem will do, but you have to tune it properly.  I like to set
> up routing to push specific workloads into shared memory pools where I
> can not control some of the performance.
>
> None of this is hard once you understand the job routing on the system.
>
> Jim Oberholtzer
> Chief Technical Architect
> Agile Technology Architects