On Sun, Sep 26, 2021 at 10:23:47AM +0900, Tomoaki AOKI wrote: > On Sat, 25 Sep 2021 23:46:48 +0300 > Andriy Gapon <a...@freebsd.org> wrote: > > > On 25/09/2021 19:10, Johan Hendriks wrote: > > > For me i had kern.sched.steal_thresh=1 in my sysctl as i use this machine > > > mainly > > > for tests and so on. > > > By removing this sysctl the system boots again. I already used the latest > > > snapshot and that booted fine. > > > > Might have something to do with > > https://cgit.FreeBSD.org/src/commit/?id=bd84094a51c4648a7c97ececdaccfb30bc832096 > > > > -- > > Andriy Gapon > > Commenting out kern.sched.steal_thresh=0 line in /etc/sysctl.conf let > me boot fine. No other setting of kern.sched.* affected. > I've introduced the setting by reading posts [1] and [2] on > freebsd-current ML. Thanks for the hint, Jan! > > Andriy, I took time to bi-sect and determined the commit triggered > this issue was e745d729be60. [3] > Worked OK even with kern.sched.steal_thresh=0 at a342ecd326ee. [4] > > Tested commits are as below (tested order, not using git bisect): > 0b79a76f8487: [Known to be OK] > 8db1669959ce: [Problematic rev I first encountered] > 0f6829488ef3: OK > df8dd6025af8: OK > 4f917847c903: OK > e745d729be60: NG! > bd84094a51c4: OK > a342ecd326ee: OK > > Konstantin, no more chance to get into ddb on hang up until my previous > post. ^T never worked on hang up situation. Sory. But does info above > help? Let the author of the commit look.
> > > [1] > https://lists.freebsd.org/pipermail/freebsd-current/2021-March/079237.html > > [2] > https://lists.freebsd.org/pipermail/freebsd-current/2021-March/079240.html > > [3] > https://lists.freebsd.org/pipermail/dev-commits-src-main/2021-September/007513.html > > [4] > https://lists.freebsd.org/pipermail/dev-commits-src-main/2021-September/007512.html > > -- > Tomoaki AOKI <junch...@dec.sakura.ne.jp>