echo | awk 'BEGIN {i=$1; print i}' prints a boatload of stack
garbage. NUL terminate the memory returned from malloc to prevent it.
Obtained from: OpenBSD run.c 1.40
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D12379
Since the page "frame" doesn't belong to a vm object, it can't be paged
out. Since it can't be paged out, it is never actually enqueued in a
paging queue. Nonetheless, passing PQ_INACTIVE to vm_page_unwire()
creates the appearance that the page "frame" is being enqueued in the
inactive queue. As of r288122, we can avoid this false impression by
passing PQ_NONE.
MFC after: 1 week
Convert some idioms over to py3k-compatible idioms
- Import print_function from __future__ and use print(..) instead of `print ..`.
- Use repr instead of backticks when the object needs to be dumped, unless
print(..) can do it lazily. Use str instead of backticks as appropriate
for simplification reasons.
This doesn't fully convert these modules over py3k. It just gets over some of
the trivial compatibility hurdles.
ddb(4): Add 'show badstacks' command to show witness badstacks
Add a DDB command that mirrors sysctl debug.witness.badstacks.
Reapply r323935 after fixing trivial deficiency. I forgot to compile with
WITNESS enabled. Thanks emaste@ for fixing the build while I was asleep.
Reported by: rstone
Reviewed by: rstone (previous version)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D12468
bnxt: Choose better HW LRO defaults for performance
1) Choose correct Firmware options for HW LRO for best performance
2) Delete TBD and other comments which are not required.
3) Added sysctl interface to enable / disable / modify different factors
of HW LRO.
4) Disabled HW LRO by default to avoid issues with packet forwarding
This allows much better control over the LRO configuration via sysctls, and
uses much better defaults. Hardware LRO can now be enabled/disabled
independantly from the software LRO, and the tuning parameters are exposed.
manpage updates coming soon.
Submitted by: Bhargava Chenna Marreddy <bhargava.marreddy@broadcom.com>
Reviewed by: shurd, sbruno
Approved by: sbruno (mentor)
Sponsored by: Broadcom Limited
Differential Revision: https://reviews.freebsd.org/D12223
Have ifmp_ring_enqueue() abdicate instead of switch to a consumer
Move TX out of the enqueue() path. As a result, we need
to have ifmp_ring_check_drainage() pick up from the abdicate state.
We also need to either enqueue the TX task, or check drainage
after calling ifmp_ring_enqueue() to ensure it's sent.
This change results in a 30% small packet forwarding improvement.
Reviewed by: olivier, sbruno
Approved by: sbruno (mentor)
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D12439
Previously, it was just a pointer which was copied, but
some callers pass in a stack variable which will go out of scope.
Add GROUPTASK_NAMELEN macro (32) and snprintf() the name into it,
using "grouptask" if name is NULL. We can now safely include
gtask->gt_name in console messages.
Reviewed by: sbruno
Approved by: sbruno (mentor)
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D12449