[Bug 268490] [igb] [lagg] [vlan]: Intel i210 performance severely degraded
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Date: Thu, 16 Mar 2023 19:39:53 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268490 --- Comment #31 from Kevin Bowling <kbowling@freebsd.org> --- (In reply to Daniel Duerr from comment #30) The idea is to bisect in somewhat of a reverse fashion where you introduce the one line change on during each bisection step: - em_if_set_promisc(ctx, if_getflags(ifp)); + em_if_set_promisc(ctx, IFF_PROMISC); and see if that triggers a different resultant commit hash. Instead of walking backwards to see where things break, which you did, and which identified this line of code, we want to see when this line change results in bad performance if it were applied earlier before, and during other code changes. If I understand correctly, applying this one line change to 12.2 did not result in poor performance. If you have already done this and the performance is poor on 12.2 with the change there is no need to bisect further. The drivers are very similar between 12, 13, and 14 so if it is a driver regression it probably affects all of these. If it is some cross cut with the network stack there could be something different but I am not aware of major differences in this area. -- You are receiving this mail because: You are the assignee for the bug.