From nobody Sun Sep 26 01:47:10 2021 X-Original-To: freebsd-current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id CB2C917DF87A for ; Sun, 26 Sep 2021 01:47:28 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4HH7tm3GBVz4X1q; Sun, 26 Sep 2021 01:47:28 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.16.1/8.16.1) with ESMTPS id 18Q1lAKn083742 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sun, 26 Sep 2021 04:47:13 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua 18Q1lAKn083742 Received: (from kostik@localhost) by tom.home (8.16.1/8.16.1/Submit) id 18Q1lAO0083741; Sun, 26 Sep 2021 04:47:10 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Sun, 26 Sep 2021 04:47:10 +0300 From: Konstantin Belousov To: Tomoaki AOKI Cc: freebsd-current@freebsd.org, mav@freebsd.org Subject: Re: latest current fails to boot. Message-ID: References: <20210922230905.79a494a4ddbecd7d6b8179ea@dec.sakura.ne.jp> <36221848-2b85-4a60-fd27-d4bf83d4571e@FreeBSD.org> <20210926102347.c538169dddec5f2ff50d8e4c@dec.sakura.ne.jp> List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210926102347.c538169dddec5f2ff50d8e4c@dec.sakura.ne.jp> X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FORGED_GMAIL_RCVD,FREEMAIL_FROM, NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.5 X-Spam-Checker-Version: SpamAssassin 3.4.5 (2021-03-20) on tom.home X-Rspamd-Queue-Id: 4HH7tm3GBVz4X1q X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: N On Sun, Sep 26, 2021 at 10:23:47AM +0900, Tomoaki AOKI wrote: > On Sat, 25 Sep 2021 23:46:48 +0300 > Andriy Gapon 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