I am also facing a similar "delayed_fput" issue. However, I am *not* running btrfs. (Xubuntu 22.04 / ext4 / 6.5.0-45-generic / Intel i5-9600K 3.7GHZ / 32gb ram).
journalctl output is to demonstrate an earlier pattern: Apr 26 10:44:56 server kernel: workqueue: delayed_fput hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND Apr 26 11:18:25 server kernel: workqueue: delayed_fput hogged CPU for >10000us 8 times, consider switching to WQ_UNBOUND Apr 26 16:53:22 server kernel: workqueue: delayed_fput hogged CPU for >10000us 16 times, consider switching to WQ_UNBOUND Apr 27 15:12:28 server kernel: workqueue: delayed_fput hogged CPU for >10000us 32 times, consider switching to WQ_UNBOUND Apr 27 19:25:50 server kernel: workqueue: delayed_fput hogged CPU for >10000us 64 times, consider switching to WQ_UNBOUND Apr 29 12:14:07 server kernel: workqueue: delayed_fput hogged CPU for >10000us 128 times, consider switching to WQ_UNBOUND Apr 30 09:46:43 server kernel: workqueue: delayed_fput hogged CPU for >10000us 256 times, consider switching to WQ_UNBOUND May 01 13:29:35 server kernel: workqueue: delayed_fput hogged CPU for >10000us 512 times, consider switching to WQ_UNBOUND However, the issue persists: Jul 29 15:10:55 server kernel: workqueue: delayed_fput hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND Jul 29 15:13:26 server kernel: workqueue: delayed_fput hogged CPU for >10000us 8 times, consider switching to WQ_UNBOUND Could be workload-related: Running Chrome alone did not trigger, adding Chromium eventually triggers (~4 hours later). Have experienced 2 recent (22 July / 25 July) crashes requiring hard re- start. Not certain whether related (to the "hog"). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.5 in Ubuntu. https://bugs.launchpad.net/bugs/2038492 Title: workqueue: inode_switch_wbs_work_fn hogged CPU for >10000us 16 times, consider switching to WQ_UNBOUND Status in linux-oem-6.5 package in Ubuntu: Confirmed Bug description: dmesg has multiple messages: [ 852.580542] evict_inodes inode 00000000be24a21a, i_count = 1, was skipped! [ 852.580543] evict_inodes inode 000000002aea522e, i_count = 1, was skipped! [ 852.580544] evict_inodes inode 0000000048d75a5c, i_count = 1, was skipped! [ 852.580545] evict_inodes inode 00000000d8a9e4c2, i_count = 1, was skipped! [ 852.580546] evict_inodes inode 000000003d2c905c, i_count = 1, was skipped! [ 852.580547] evict_inodes inode 00000000e5b1b232, i_count = 1, was skipped! [ 852.580548] evict_inodes inode 0000000097383a6b, i_count = 1, was skipped! [ 852.580549] evict_inodes inode 00000000ca8e2b44, i_count = 1, was skipped! [ 1751.869281] workqueue: inode_switch_wbs_work_fn hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND [ 1781.467278] workqueue: inode_switch_wbs_work_fn hogged CPU for >10000us 8 times, consider switching to WQ_UNBOUND [ 1806.065364] workqueue: inode_switch_wbs_work_fn hogged CPU for >10000us 16 times, consider switching to WQ_UNBOUND [ 1901.993975] evict_inodes inode 00000000abaa740e, i_count = 1, was skipped! [ 1901.993981] evict_inodes inode 00000000515b9bf8, i_count = 1, was skipped! [ 1901.993983] evict_inodes inode 000000001a69d536, i_count = 1, was skipped! [ 1901.993984] evict_inodes inode 000000001403f675, i_count = 1, was skipped! [ 1901.993985] evict_inodes inode 00000000757de21a, i_count = 1, was skipped! [ 1901.993986] evict_inodes inode 000000000cee9028, i_count = 1, was skipped! [ 1901.993987] evict_inodes inode 00000000d2827e77, i_count = 1, was skipped! Description: Ubuntu 22.04.3 LTS Release: 22.04 linux-oem-22.04d: Installed: 6.5.0.1004.4 Candidate: 6.5.0.1004.4 Seems related to #2037214 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem-6.5/+bug/2038492/+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
