> I've tested it with manually offlined threads and it behaves as I'd like
> it to.
Which is ? IE. I'm happy that you like how it behaves, but I'd like to u
understand how that is so I can make sure I'm also happy with it :-)
Cheers,
Ben.
___
Linuxp
What about an early exit if !cpu_has_feature(CPU_FTR_SMT) ? That would
de-facto compile it out for 32-bit CPU platforms that don't support SMT
at all and avoid some overhead on POWER3,4,970...
If the SD_SHARE_CPUPOWER flag isn't set for the sched domain this
function isn't called. So an ex
On Tue, 2010-01-26 at 17:28 -0600, Joel Schopp wrote:
> On Power7 processors running in SMT4 mode with 2, 3, or 4 idle threads
> there is performance benefit to idling the higher numbered threads in
> the core.
>
> This patch implements arch_scale_smt_power to dynamically update smt
> thread po
On Power7 processors running in SMT4 mode with 2, 3, or 4 idle threads
there is performance benefit to idling the higher numbered threads in
the core.
This patch implements arch_scale_smt_power to dynamically update smt
thread power in these idle cases in order to prefer threads 0,1 over
thread
