Hello,

> "IRQ & hd" run:
> Measurements   |   Vanilla   |  preempt_rt    |   ipipe
> ---------------+-------------+----------------+-------------
> fork           |     101us   |   94us (-7%)   |  103us (+2%)
> open/close     |     2.9us   |  2.9us (~)     |  3.0us (+3%)
> execve         |     366us   |  370us (+1%)   |  372us (+2%)
> select 500fd   |    14.3us   | 18.1us (+27%)  | 14.5us (+1%)
> mmap           |     794us   |  654us (+18%)  |  822us (+4%)

                                  ^^^^^^^^^^^^
You mean -18%, not +18% I think.

Just having a quick long at the numbers, it seems that now the "weak"
part in PREEMPT_RT is the select 500fd test.

Ingo, any idea about this one ?

Regards,
Paul

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