From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 326E4C32772 for ; Tue, 23 Aug 2022 22:32:11 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1oQcRK-0005hu-UG; Tue, 23 Aug 2022 22:32:06 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oQcRF-0005ha-9C for linux-f2fs-devel@lists.sourceforge.net; Tue, 23 Aug 2022 22:32:01 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=MIME-Version:Content-Transfer-Encoding:Content-Type :References:In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=dYFagy57XNh1t8p6I/ECXA5HYiUVjXa4yABQlM3ucVw=; b=NkSAwuOUET10nr3b9CqUEakuQc XYnYtqRITMyL+cdRNj4hW4v1NlHxRHbI12ld3iToYCwMgKau2/1DK78iFz0WugiC/pFk1i/28yyPl sFnYzZ+B/FEX0NcbUjqdFn5e9tB+ZcoExuJZ1jo9Ug+/LAY0+hXqEinsGSGy516YOC30=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=MIME-Version:Content-Transfer-Encoding:Content-Type:References: In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=dYFagy57XNh1t8p6I/ECXA5HYiUVjXa4yABQlM3ucVw=; b=EcO0v6lJmqTtbe3SXiVrEGMOul 9u7j7alBNfPBYMYR0BSIyQo/wUpIXVSfGW3RYItJHMFVg5pg7IOtocSMOXscvdtIhThXMIg/RwmAb nT7MvQm89QJwMHfAI2PJkPlEJtQ1squxqOQ/smHvAfqPuqXItgof7jLvFholCVZfNbZk=; Received: from ams.source.kernel.org ([145.40.68.75]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1oQcRA-00Ev9G-7I for linux-f2fs-devel@lists.sourceforge.net; Tue, 23 Aug 2022 22:32:01 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D8222B82193 for ; Tue, 23 Aug 2022 22:31:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 81B13C433B5 for ; Tue, 23 Aug 2022 22:31:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1661293900; bh=Vt1/64NfzQ6gWAK0ig1NwnnWYMa1t92BWhKOmtD/PmI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=GNbP22KJJQKvvHZQ0vbpyTOrn43OJ6bYztnZt0AS5dydYfDE4ncXuhBt+OaR3Hu6e a/usqH0bl57M86Za1iB30ECQR/P6/5cJfotiIRSmjsZzhNIhOBJc+B3iDX6bRNe0m4 NJAuPVp8k6QPk21n1ax3IGU3iHeNQMGfyVgCRNBa91kmiIVbxm/8I6XDDpRTn+bbB7 SeV/HXKIlwyg8HtQlUaLOHyxl9KfNJni2lD28wo5sQEWyAOBwKQy864N+XRoQ3F83v goThFDOEVNGC4djhE1QZrdMf45/vzf9zHPiZop2gN3mETpAdwaTxe2Fsm2oI4OZbxg 7vdlFwNB1DDzw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 657E8C433E6; Tue, 23 Aug 2022 22:31:40 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-f2fs-devel@lists.sourceforge.net Date: Tue, 23 Aug 2022 22:31:40 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo filesystem_f2fs@kernel-bugs.kernel.org X-Bugzilla-Product: File System X-Bugzilla-Component: f2fs X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: bogdan.nicolae@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: filesystem_f2fs@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Headers-End: 1oQcRA-00Ev9G-7I Subject: [f2fs-dev] [Bug 216050] f2fs_gc occupies 100% cpu X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net https://bugzilla.kernel.org/show_bug.cgi?id=216050 bogdan.nicolae@gmail.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bogdan.nicolae@gmail.com --- Comment #55 from bogdan.nicolae@gmail.com --- This problem still persists in kernel 5.19.3. As mentioned before, f2fs_gc stays at 100% CPU utilization indefinitely: 247 root 20 0 0 0 0 R 99.7 0.0 90:30.67 f2fs_gc-8:4 Here is the call trace causing a hang: kernel: INFO: task f2fs_ckpt-8:4:244 blocked for more than 122 seconds. kernel: Not tainted 5.19.3-arch1-1 #1 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kernel: task:f2fs_ckpt-8:4 state:D stack: 0 pid: 244 ppid: 2 flags:0x00004000 kernel: Call Trace: kernel: kernel: __schedule+0x356/0x11a0 kernel: ? preempt_schedule+0x43/0x60 kernel: schedule+0x5e/0xd0 kernel: rwsem_down_write_slowpath+0x335/0x720 kernel: ? __schedule+0x35e/0x11a0 kernel: ? __checkpoint_and_complete_reqs+0x1b0/0x1b0 [f2fs d8aa87b5c63297ab56225cbf829d392db2a7d54b] kernel: __checkpoint_and_complete_reqs+0x7a/0x1b0 [f2fs d8aa87b5c63297ab56225cbf829d392db2a7d54b] kernel: ? __checkpoint_and_complete_reqs+0x1b0/0x1b0 [f2fs d8aa87b5c63297ab56225cbf829d392db2a7d54b] kernel: issue_checkpoint_thread+0x4c/0x110 [f2fs d8aa87b5c63297ab56225cbf829d392db2a7d54b] kernel: ? cpuacct_percpu_seq_show+0x20/0x20 kernel: kthread+0xde/0x110 kernel: ? kthread_complete_and_exit+0x20/0x20 kernel: ret_from_fork+0x22/0x30 kernel: -- You may reply to this email to add a comment. 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