Hi, I have been working through various bugs and have come to a point where TSO is working on systems I have available for testing.
This results in higher throughput on resource constrained systems, and less CPU/power usage on unconstrained systems. As of this mail, you will need to manually apply https://reviews.freebsd.org/D41170 on top of main to use TSO6 on em(4). I plan to enable TSO by default for lem(4) and em(4) during the FreeBSD 14 release cycle, so I would appreciate testing to address any remaining issues. Below, a list of chipsets that will be exempt due to known issues. lem(4) exclusions: * <82544 (although it does seem ok to manually enable for emulations in qemu, virtualbox, etc) * 82547 em(4) exclusions.. These chips have a stability workaround for high throughput with rapid link-flap applied that results in the TSO engine not being able to run at line speed. Thus, TSO would not be enabled by default here: * Intel(R) I219-LM and I219-V * Intel(R) I219-LM and I219-V (2) * Intel(R) I219-LM and I219-V (3) * Intel(R) I219-LM and I219-V (4) * Intel(R) I219-LM and I219-V (5) Regards, Kevin Bowling
