[Bug 222789] IRQ pinning is not working as expected with cpuset -x

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Thu Oct 5 15:44:05 UTC 2017


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222789

Stephen Hurd <shurd at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |Open

--- Comment #2 from Stephen Hurd <shurd at FreeBSD.org> ---
This will only pin the interrupt itself to the CPU, it won't change the
affinity of the taskq which does the bulk of the processing.  With iflib, the
interrupt handler only schedules the task, so no real processing is done in the
interrupt context.

There is an open TODO item to enable dynamically setting gtaskq affinity for
each queue, but the work hasn't been started yet.

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