Re: [RFC PATCH v3 3/6] sched: pack small tasks

[Arjan van de Ven]

> Isn't this basically related to picking the NO_HZ cpu; if the system
> isn't fully symmetric with its power gates you want the NO_HZ cpu to be
> the 'special' cpu. If it is symmetric we really don't care which core
> is left 'running' and we can even select a new pack cpu from the idle
> cores once the old one is fully utilized.

you don't really care much sure, but there's some advantages for sorting "all the way left",
e.g. to linux cpu 0.
Some tasks only run there, and interrupts tend to be favored to that cpu as well on x86.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/