[Bug 257989] Traffic shaper unable to perform beyond 1Gbit/s limit

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 22 Aug 2021 15:37:03 UTC

Kevin Bowling <kbowling@freebsd.org> changed:

           What    |Removed                     |Added
                 CC|                            |kbowling@freebsd.org

--- Comment #6 from Kevin Bowling <kbowling@freebsd.org> ---
Without evidence it sounds like the user may be running out of CPU budget
rather than any particular bug.  I agree with Kristof that we need more
information and the vendor/project needs to help qualify what and where issues
are first or this will fatigue devs if it turn into a raw support forum for
issues like that.

If there is an obvious FreeBSD defect (for instance a panic in unmodified code)
I'd send it here right away.  Otherwise I think you should figure out how to
help users produce more qualified reports, a debug bundle including things like
dmesg, pciconf -lv, relevant sysctls (to include stats ones for the NIC),
netstat etc is the standard Mellanox wants when I interact with them in my
dayjob, maybe worth consideration here.  In this case I'd suggest a more direct
approach of some 'top' output while bw limited, and even better some pmcstat
for at least instructions retired https://wiki.freebsd.org/PmcTools/PmcTop.

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