I take that back. It does survive for much longer, but after some 15 minutes of running I again run into tons of
[ 2424.611668] INFO: task systemd-udevd:1320 blocked for more than 120 seconds. [ 2424.613514] Tainted: G W 4.2.0-22-generic #27-Ubuntu [ 2424.615183] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2424.617166] systemd-udevd D ffffffc000086ee4 0 1320 1 0x0000000c [ 2424.617176] Call trace: [ 2424.617842] [<ffffffc000086ee4>] __switch_to+0x94/0xa8 [ 2424.617851] [<ffffffc0008a7100>] __schedule+0x2b0/0x7b8 [ 2424.617854] [<ffffffc0008a7644>] schedule+0x3c/0x98 [ 2424.617859] [<ffffffc0008aa954>] schedule_timeout+0x1ec/0x280 [ 2424.617862] [<ffffffc0008a8364>] wait_for_common+0xcc/0x1a0 [ 2424.617866] [<ffffffc0008a8460>] wait_for_completion+0x28/0x38 [ 2424.617870] [<ffffffc000120654>] __synchronize_srcu+0x9c/0x180 [ 2424.617873] [<ffffffc000120770>] synchronize_srcu+0x38/0x48 [ 2424.617877] [<ffffffc00028b7b4>] fsnotify_destroy_group+0x2c/0x60 [ 2424.617880] [<ffffffc00028de3c>] inotify_release+0x34/0x78 [ 2424.617885] [<ffffffc00024537c>] __fput+0xa4/0x248 [ 2424.617887] [<ffffffc000245598>] ____fput+0x20/0x30 [ 2424.617892] [<ffffffc0000e0604>] task_work_run+0xbc/0xf8 [ 2424.617896] [<ffffffc0000c29d0>] do_exit+0x2f0/0xa48 [ 2424.617898] [<ffffffc0000c31bc>] do_group_exit+0x44/0xe8 [ 2424.617902] [<ffffffc0000d09b8>] get_signal+0x3d8/0x578 [ 2424.617906] [<ffffffc000089f20>] do_signal+0x90/0x530 [ 2424.617909] [<ffffffc00008a640>] do_notify_resume+0x70/0x78 for all kinds of processes. ** Summary changed: - arm64 kernel and >= 8 CPUS (>= host CPU count?) is unusably slow with lxd operations + arm64 kernel and multiple CPUs is unusably slow -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1531768 Title: arm64 kernel and multiple CPUs is unusably slow To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1531768/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
