RHEL8 systemd using a lot of CPU, load on system when doing nothing is very high

I've been trying to determine the source of high load on a system, **top:** top - 09:55:12 up 1 day, 11:48, 4 users, load average: 7.64, 6.52, 6.33 Tasks: 279 total, 2 running, 276 sleeping, 0 stopped, 1 zombie %Cpu(s): 50.0 us, 50.0 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st MiB Mem : 1785.3 total, 223.3 free, 938.8 used, 623.2 buff/cache MiB Swap: 4096.0 total, 2259.5 free, 1836.5 used. 664.8 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1267200 root 20 0 0.1g 0.0g 0.0g R 50.0 0.3 0:00.61 top 1 root 20 0 0.2g 0.0g 0.0g S 0.0 0.3 347:46.38 /usr/lib/systemd/systemd --switched-root --system --deserialize 17 2 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.15 [kthreadd] 3 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [rcu_gp] 4 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [rcu_par_gp] 6 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kworker/0:0H-events_highpri] 9 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [mm_percpu_wq] 10 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [rcu_tasks_rude_] 11 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [rcu_tasks_trace] 12 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 6:10.89 [ksoftirqd/0] 13 root 20 0 0.0g 0.0g 0.0g I 0.0 0.0 0:41.25 [rcu_sched] 14 root rt 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [migration/0] 15 root rt 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.12 [watchdog/0] 16 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [cpuhp/0] 18 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [kdevtmpfs] 19 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [netns] 20 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:03.12 [kauditd] 21 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.11 [khungtaskd] 22 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [oom_reaper] 23 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.01 [writeback] 24 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:01.01 [kcompactd0] 25 root 25 5 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [ksmd] 26 root 39 19 0.0g 0.0g 0.0g S 0.0 0.0 0:07.19 [khugepaged] 27 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [crypto] 28 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kintegrityd] 29 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kblockd] 30 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [blkcg_punt_bio] 31 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [tpm_dev_wq] 32 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [md] 33 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [edac-poller] 34 root rt 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [watchdogd] 35 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:10.06 [kworker/0:1H-kblockd] 69 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 5:12.96 [kswapd0] 171 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kthrotld] 172 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/24-pciehp] 173 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/25-pciehp] 174 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/26-pciehp] 175 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/27-pciehp] 176 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/28-pciehp] 177 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/29-pciehp] 178 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/30-pciehp] 179 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/31-pciehp] **vmstat:** procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free inact active si so bi bo in cs us sy id wa st 6 0 1676376 66624 929468 403424 109 160 1073 274 120 95 13 18 69 0 0 **iostat:** Linux 4.18.0-425.13.1.el8_7.x86_64 (hostname) 04/20/2023 _x86_64_ (1 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 12.30 0.82 17.65 0.26 0.00 68.97 Device tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 38.05 1064.79 272.12 138382106 35365399 dm-0 10.39 250.39 25.20 32540656 3274422 dm-1 66.44 107.65 158.12 13989760 20548928 dm-2 2.39 147.00 11.90 19103775 1546792 dm-3 0.00 0.03 0.02 3989 2082 dm-4 3.45 152.32 31.33 19795688 4071283 dm-5 0.30 2.01 5.01 260581 651253 dm-6 0.00 0.03 0.02 3440 2048 dm-7 0.02 0.06 0.18 8149 23581 dm-8 0.06 0.80 0.27 104186 34788 dm-9 0.30 9.03 0.11 1173075 14455 dm-10 8.83 387.11 39.96 50309334 5192814 loop0 0.00 0.01 0.00 1917 101 loop1 0.00 0.03 0.00 3332 1 How can I debug the cause of this further?