From nobody Wed Mar 06 18:26:39 2024 X-Original-To: fs@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 4Tqgqz6n5xz5D4Y8 for ; Wed, 6 Mar 2024 18:26:39 +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 4Tqgqz5jTLz40L2 for ; Wed, 6 Mar 2024 18:26:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1709749599; a=rsa-sha256; cv=none; b=wz3yJjYi4JOqbaU3KYmrpJaoUhSWyQ3VDdfhGcJXnyhVehAO5WWm1s6/4moTsDgX9Gu2Ac mPpjBf+KkHRLcAROX12RTwnnEa+vxE2qpeZeL9HFepvWp4I3sEAMSvnXH+0KGYk/hdXA0E cH2lUG1mEBXCa+bvWVpI3tAfHdmcvnG5evb7j3DbPXlTJUu7wiplWTgTo312jQ3U7noY8r DUiNnRy4kkrKXOADRT4oQzHpesgaydYdkdeK22nU4LSyvudkk/UBe5i4Sezen94QA6ZcBp p7Jx5D+bPkvtwKiIt8Otkq7XJ72wv+x34lK2SUodcKKXHT8poN3JXPfIlzevig== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1709749599; 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=Fj9BkjDxRyGhgxRxQCFZy66jVlDg3EcHfonxbtzzdwY=; b=lo0vuE5HGjT/mA2zfxfhoMM65y3lBU16nTezuIPG0BJ9Y/uhe+QCes1qruz3zJBNWPBKRn jD21XiouhnGAldck9v4KuTf7Ulu897dRC4PmEURuLkJbrcAHol0jKqdUtKNVF8En7x7ju+ 8XbwZpuEjgH4vKdg1E0ImygsVS5p9Z6NpihKawTGPS6CwMj9bu7nxQwV9ZnFGL7pc9XATA NVE0vVNfnJfdSA45zdNf8015qLGNA8+t3o/WLmWxuG4VU6uNURXHyXEHUxpijobRLWiH+Y eCJNLIODSTLPk6e+psLmxX4D3px5fIQZRYK76/dLCiuqyUGtagCjTZksnh5cxw== 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 4Tqgqz5C5dz11n1 for ; Wed, 6 Mar 2024 18:26:39 +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 426IQdoT024190 for ; Wed, 6 Mar 2024 18:26:39 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 426IQdgv024189 for fs@FreeBSD.org; Wed, 6 Mar 2024 18:26:39 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: fs@FreeBSD.org Subject: [Bug 275594] High CPU usage by arc_prune; analysis and fix Date: Wed, 06 Mar 2024 18:26:39 +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: 14.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: marklmi26-fbsd@yahoo.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275594 --- Comment #74 from Mark Millard --- (In reply to Anton Saietskii from comment #73) Thanks for the description of what the hang is like. Since to does finish, it might be a form of livelock since it is not an overall deadlock (progress was made). Sounds like things suspend that vm.swap_enabled=3D0 and vm.swap_idle_enabled=3D0 would not change anything for. So my note is probably not of much use for the context. --=20 You are receiving this mail because: You are the assignee for the bug.=