Re: QPRCMLTTSK system value

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Vern Hamberg wrote:

Since the default is to have it turned on, I'd say it's best to leave it
that way. That is the gist of an InfoCenter article on when to use this
feature. It appears that things should not go more slowly when this is
on, but you won't gain double the speed from the 2 paths in a CPU in
earlier processor since NorthStar. POWER7 seems now to support 4
hardware threads on a core.

Well, see, the thing is, it's currently set to '0', which appears to
mean that threads will be executed sequentially instead of concurrently.
I don't know how it got set that way. Presumably that's what came over
from the previous hardware. I'm looking to turn the support on so Java
threads will get executed more efficiently. As I said, the setting is
inherited from the controlling partition on the hardware we are running,
so I can't test the change on the dev LPAR, and an IPL of the complete
box is necessary to affect the change, meaning a service outage. Hence
the questions: Is this a good thing to do? Will any bad things happen?

- --
Pete Hall
pete@xxxxxxxxxxxxxx
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