svn commit: r278479 - in head: etc sys/kern

[Rui Paulo]

On Feb 10, 2015, at 10:52 AM, Slawa Olhovchenkov <slw at zxy.spb.ru> wrote:
For common case (I am not talk about current devd implementation -- I
am don't have any inforamtion/metrics/etc) routing and processing
events may be sensitive to delay and ordering: may be exist
requirement 'delay not more then 700ns', may be exist requirement
'next event process only after complete process previos event'. And
some event handling may be very CPU/disk/etc consumption. Need to good
think over and design API and architecure.
 
routing events do not come over devd (or any other /dev device): there's a routing socket specifically tailored for that purpose.  For that type of latency, you probably don't want to be crossing the kernel/userland barrier too often (or never).