Re: CVS commit: src/sys/net

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

On Thu, Feb 18, 2016 at 12:18 AM, Roy Marples <roy%marples.name@localhost> wrote:
> On 17/02/2016 01:46, Roy Marples wrote:
>> Patch attached to solve change from a priority array into a bit mask
>> approach where we swallow the whole queue in a softint.
>
> I did the same tests as noted in PR 50602 - put the system under load by
> building clang from src and qt5 from pkgsrc at the same time, both with
> -j3 on my Core2 @2.4Ghz dev machine.
> The load was measured at about 9 by top, the machine itself was pretty
> un-useable.
>
> It also has a wm(4) interface, which the reporter had.
> Also an iwn(4) interface.
> Toggling both as fast as possible - my daughter power cycled the AP
> while I unplugged / replugged the ethernet cable.
>
> Doing this for about 10 minutes resulted in no lossage reported with my
> patch and like state transitions happened perfectly.

Good.

>
> I would imagine any lossage would occur as a result of a driver or
> hardware defect, where more important information is likely found on the
> console as well.

IIUC amd64/i386 have the fast softint facility and it tries to schedule
a softint just after hwintr finishes, and so more than one events are
unlikely to come before the softint starts? Please someone correct
me if my guess is wrong.

  ozaki-r