From nobody Fri Apr 21 14:23:28 2023 X-Original-To: bugs@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 4Q2xb44Bqlz46Tnq for ; Fri, 21 Apr 2023 14:23:28 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (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-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Q2xb42ZtHz4LVq for ; Fri, 21 Apr 2023 14:23:28 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1682087008; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gzS8JUiOkSZY7mfyfsNTr+do3hv2PW7I/Uew4zoLU2c=; b=n/IFdEPMw4Z9XWzp5fKs/e1rmLmXPKKlAikC5yryevtr7EbUfFhzoyi2H4OiMjSjOZcPs5 wLAVWhp4E26MekVuPkuPYgWwuKbsGj0ca1P+QgHXp3H8NQMK7KemDoCbC4OriUFrDPzr7d chZEiULk+Wr1xJFt/U35La8RsIs2EyRM25GZBIzAzQXsEnx06rCu+H2xrPQDdwyhKe1xje z+yMy94P/rUCNEQXb0ywC3EPfBhU2Aj4xW9UxlTl3RyzlVKrMUKDdjuqxJiR9WwRDnkF0c P4UZG44RQXRYQmkU4a/PJJ9Zn04mNUDDg0TrB9CjbzucXKDgns19whrWg34hEQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1682087008; a=rsa-sha256; cv=none; b=LqeCCKrqF5dsWV/Uz6dqg4HzK/7AfDh/C3rebIyQTcCFQk+Oa/TdJTs48iSk9cOwOTeYGR VgCXPvi5xJmZd5UTBiofJVmlbeQrps1UluSwiEn7pR2Bc319pDWvtEntQJVjkegecRY7ND /PhT7rw6i/RgHtPE76fibieb13+Upv3CRzBUDZFhOnv5nDM6NDQXxZtqnxq0G7P1RUnXHe A6QecXylaIoTFZvPhvVTjyj8mK+WSwV/fdwPHqgDozLN6ZxICZbadA7iLK1gWAiwbJYuzG Xg8ECyHQFkJhZ/2pwcxlpjfGhV6Qk/QrZrqqctkTansuepp9bj5fE1wRE7Wgvw== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4Q2xb41dfWzP3t for ; Fri, 21 Apr 2023 14:23:28 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 33LENSnB003939 for ; Fri, 21 Apr 2023 14:23:28 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 33LENS0I003938 for bugs@FreeBSD.org; Fri, 21 Apr 2023 14:23:28 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 270975] [hang] system hangs with heavy io and regular syncing Date: Fri, 21 Apr 2023 14:23:28 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.4-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: debdrup@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D270975 Daniel Ebdrup Jensen changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |debdrup@freebsd.org --- Comment #1 from Daniel Ebdrup Jensen --- It sounds to me like console interactivity is being completely overloaded as there are simply no spare cycles - as such, I'm not sure this is a bug, as FreeBSD is doing what it's been told to do. I once manged to do the exact same on a production system, and solved it by using top -q as root to identify the process and kill it - but it took 3 da= ys of waiting on the login prompt to finish, and ssh never managed to work. The kern.sched MIB in sysctl(8) has some control over interactivity and threshold scores that you can try tweaking to improve this if you can't bea= r to shut down the system to fix the issue. As an alternative, you can use cpuset(8) and/or rctl(8) to limit which cores your CPUs are running on and/or how much cputime they get, which should fre= e up cycles for the system to be a little interactive. If you want help with something, a bug tracker isn't the best place for it - stop by #FreeBSD on Libera, it's possible that there's someone that can help you rootcause the issue. For reference, there's documentation on how to write a good bug report once you've figured out the exact issue: https://docs.freebsd.org/en/articles/problem-reports/ --=20 You are receiving this mail because: You are the assignee for the bug.=