Had this again 20 minutes ago. Was dopying 8.7GiB of data from one directory to another directory on the same filesystem (ext4 (rw,relatime,data=ordered)) on the same disk (Western Digital WDC WD30EZRX-00D8PB0 spinning metal disk).
The KDE UI became unresponsive (Everything other than /home and user data in on a SSD), could not launch any new applications. Opening a new tab on Firefox to go to Youtube didnt load the page, and kept saying waiting for youtube.com in the status bar (network gets halted?). dmesg shows these, are they important? [25013.905943] INFO: task DOMCacheThread:17496 blocked for more than 120 seconds. [25013.905945] Tainted: P OE 4.15.0-54-generic #58-Ubuntu [25013.905947] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [25013.905949] DOMCacheThread D 0 17496 2243 0x00000000 [25013.905951] Call Trace: [25013.905954] __schedule+0x291/0x8a0 [25013.905957] schedule+0x2c/0x80 [25013.905959] jbd2_log_wait_commit+0xb0/0x120 [25013.905962] ? wait_woken+0x80/0x80 [25013.905965] __jbd2_journal_force_commit+0x61/0xb0 [25013.905967] jbd2_journal_force_commit+0x21/0x30 [25013.905970] ext4_force_commit+0x29/0x2d [25013.905972] ext4_sync_file+0x14a/0x3b0 [25013.905975] vfs_fsync_range+0x51/0xb0 [25013.905977] do_fsync+0x3d/0x70 [25013.905980] SyS_fsync+0x10/0x20 [25013.905982] do_syscall_64+0x73/0x130 [25013.905985] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [25013.905987] RIP: 0033:0x7fc9cb839b07 [25013.905988] RSP: 002b:00007fc9a7aeb200 EFLAGS: 00000293 ORIG_RAX: 000000000000004a [25013.905990] RAX: ffffffffffffffda RBX: 00000000000000a0 RCX: 00007fc9cb839b07 [25013.905992] RDX: 0000000000000000 RSI: 00007fc9a7aeaff0 RDI: 00000000000000a0 [25013.905993] RBP: 0000000000000000 R08: 0000000000000000 R09: 72732f656d6f682f [25013.905994] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000000001f6 [25013.905995] R13: 00007fc97fc5d038 R14: 00007fc9a7aeb340 R15: 00007fc987523380 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/595047 Title: Frequent swapping causes system to hang Status in Linux: Fix Released Status in linux package in Ubuntu: Incomplete Bug description: Periodically I notice my system slows to a near stand still, and the hard drive light is constantly going. This seems to be a massive amount of disk i/o and it lasts for a long time (lets say 30 mins to put a number on it). I installed and ran iotop (`iotop -a`) and it seems to point to jbd2. From what I can see jbd2 is related to ext4 journaling, but I cannot figure out how to kill this operation. It might even be a red herring because I have also stopped the disk activity by kill either chromium or firefox. I need to understand what else I can do to troubleshoot this. $ lsb_release -rd Description: Ubuntu maverick (development branch) Release: 10.10 Up-to-date as of 16th June 2010. --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pgoodall 1372 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0x56440000 irq 44' Mixer name : 'Realtek ALC272X' Components : 'HDA:10ec0272,1025022c,00100001' Controls : 14 Simple ctrls : 8 DistroRelease: Ubuntu 10.10 Frequency: Once a day. HibernationDevice: RESUME=UUID=145f27a9-859a-4987-8132-ac878c832747 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100602.2) MachineType: Acer AO531h Package: linux (not installed) ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-6-generic root=UUID=11f96f8b-5e04-4e20-a201-0fa5d0fc07fa ro quiet splash ProcEnviron: PATH=(custom, user) LANG=en_GB.utf8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.35-6.9-generic 2.6.35-rc3 Regression: Yes RelatedPackageVersions: linux-firmware 1.37 Reproducible: No Tags: maverick ubuntu-une kconfig regression-potential needs-upstream-testing Uname: Linux 2.6.35-6-generic i686 UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 12/22/2009 dmi.bios.vendor: Acer dmi.bios.version: v0.3304 dmi.board.asset.tag: Base Board Asset Tag dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 1 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAcer:bvrv0.3304:bd12/22/2009:svnAcer:pnAO531h:pvr1:rvnAcer:rn:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion: dmi.product.name: AO531h dmi.product.version: 1 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/595047/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
