https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212413
free...@mcwest.org changed:
What |Removed |Added
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CC| |free...@mcwest.org
--- Comment #3 from free...@mcwest.org ---
(In reply to nicolas from comment #2)
FYI, including ALTQ in the kernel config switches igb(4) interfaces to legacy
single-queue mode. I have seen crashes like these with high-bandwidth traffic
when the driver is in this mode. If you need ALTQ, add a queue to limit
throughput through igb interfaces. For example, the following workaround has
prevented crashes on my systems for the last six months:
## Limit bandwidth on internal interface to avoid igb driver bug
altq on $int_if cbq bandwidth 404Mb queue { internal }
queue internal bandwidth 99% priority 1 cbq(default red borrow)
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