What do you see with ps auxfc ? I see this:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 2 0.0 0.0 0 0 ? S Jan26 0:00 kthreadd
root 4 0.0 0.0 0 0 ? I< Jan26 0:00 \_ kworker/0:0H
root 6 0.0 0.0 0 0 ? I< Jan26 0:00 \_ mm_percpu_wq
root 7 0.0 0.0 0 0 ? S Jan26 5:35 \_ ksoftirqd/0
root 8 0.0 0.0 0 0 ? I Jan26 40:56 \_ rcu_sched
root 9 0.0 0.0 0 0 ? I Jan26 0:00 \_ rcu_bh
root 10 0.0 0.0 0 0 ? S Jan26 0:00 \_ migration/0
root 11 0.0 0.0 0 0 ? S Jan26 0:15 \_ watchdog/0
root 12 0.0 0.0 0 0 ? S Jan26 0:00 \_ cpuhp/0
root 13 0.0 0.0 0 0 ? S Jan26 0:00 \_ kdevtmpfs
root 14 0.0 0.0 0 0 ? I< Jan26 0:00 \_ netns
root 15 0.0 0.0 0 0 ? S Jan26 0:00 \_ rcu_tasks_kthre
root 16 0.0 0.0 0 0 ? S Jan26 0:00 \_ kauditd
root 17 0.0 0.0 0 0 ? S Jan26 0:17 \_ khungtaskd
root 18 0.0 0.0 0 0 ? S Jan26 0:00 \_ oom_reaper
root 19 0.0 0.0 0 0 ? I< Jan26 0:00 \_ writeback
root 20 0.0 0.0 0 0 ? S Jan26 0:00 \_ kcompactd0
root 21 0.0 0.0 0 0 ? SN Jan26 0:00 \_ ksmd
root 23 0.0 0.0 0 0 ? I< Jan26 0:00 \_ crypto
root 24 0.0 0.0 0 0 ? I< Jan26 0:00 \_ kintegrityd
root 25 0.0 0.0 0 0 ? I< Jan26 0:00 \_ kblockd
root 26 0.0 0.0 0 0 ? I< Jan26 0:00 \_ ata_sff
root 27 0.0 0.0 0 0 ? I< Jan26 0:00 \_ md
root 28 0.0 0.0 0 0 ? I< Jan26 0:00 \_ edac-poller
root 29 0.0 0.0 0 0 ? I< Jan26 0:00 \_ devfreq_wq
root 30 0.0 0.0 0 0 ? I< Jan26 0:00 \_ watchdogd
root 35 0.0 0.0 0 0 ? S Jan26 0:30 \_ kswapd0
root 36 0.0 0.0 0 0 ? I< Jan26 0:00 \_ kworker/u3:0
root 37 0.0 0.0 0 0 ? S Jan26 0:00 \_ ecryptfs-kthrea
root 79 0.0 0.0 0 0 ? I< Jan26 0:00 \_ kthrotld
root 80 0.0 0.0 0 0 ? I< Jan26 0:00 \_ acpi_thermal_pm
root 81 0.0 0.0 0 0 ? S Jan26 0:00 \_ scsi_eh_0
root 82 0.0 0.0 0 0 ? I< Jan26 0:00 \_ scsi_tmf_0
root 83 0.0 0.0 0 0 ? S Jan26 0:00 \_ scsi_eh_1
root 84 0.0 0.0 0 0 ? I< Jan26 0:00 \_ scsi_tmf_1
root 90 0.0 0.0 0 0 ? I< Jan26 0:00 \_ ipv6_addrconf
root 99 0.0 0.0 0 0 ? I< Jan26 0:00 \_ kstrp
root 116 0.0 0.0 0 0 ? I< Jan26 0:00 \_ charger_manager
root 157 0.0 0.0 0 0 ? S Jan26 0:00 \_ scsi_eh_2
root 158 0.0 0.0 0 0 ? I< Jan26 0:00 \_ scsi_tmf_2
root 160 0.0 0.0 0 0 ? I< Jan26 2:22 \_ kworker/0:1H
root 280 0.0 0.0 0 0 ? I< Jan26 0:00 \_ raid5wq
root 335 0.0 0.0 0 0 ? S Jan26 2:37 \_ jbd2/sda1-8
root 336 0.0 0.0 0 0 ? I< Jan26 0:00 \_ ext4-rsv-conver
root 435 0.0 0.0 0 0 ? I< Jan26 0:00 \_ iscsi_eh
root 456 0.0 0.0 0 0 ? I< Jan26 0:00 \_ ib-comp-wq
root 457 0.0 0.0 0 0 ? I< Jan26 0:00 \_ ib_mcast
root 458 0.0 0.0 0 0 ? I< Jan26 0:00 \_ ib_nl_sa_wq
root 464 0.0 0.0 0 0 ? I< Jan26 0:00 \_ rdma_cm
root 30402 0.0 0.0 0 0 ? I Mar10 1:46 \_ kworker/0:0
root 1003 0.0 0.0 0 0 ? I Mar14 0:00 \_ kworker/0:1
root 31060 0.0 0.0 0 0 ? I 17:36 0:02 \_ kworker/u2:2
root 1678 0.0 0.0 0 0 ? I 18:18 0:00 \_ kworker/u2:0
root 3636 0.0 0.0 0 0 ? I 18:45 0:00 \_ kworker/u2:1
root 1 0.0 0.3 159760 6656 ? Ss Jan26 3:24 systemd
root 416 0.0 1.0 102400 21668 ? S<s Jan26 15:29 systemd-journal
root 432 0.0 0.1 43096 2684 ? Ss Jan26 0:20 systemd-udevd
root 440 0.0 0.0 97712 888 ? Ss Jan26 0:00 lvmetad
systemd+ 617 0.0 0.0 141788 768 ? Ssl Jan26 0:23 systemd-timesyn
systemd+ 768 0.0 0.1 70620 3548 ? Ss Jan26 0:21 systemd-resolve
root 791 0.0 0.1 25996 2436 ? Ss Jan26 0:00 dhclient
syslog 994 0.0 0.1 263048 3748 ? Ssl Jan26 3:54 rsyslogd
root 998 0.0 0.1 169528 3516 ? Ssl Jan26 0:00 networkd-dispat
root 1000 0.0 0.1 286232 3348 ? Ssl Jan26 4:44 accounts-daemon
root 1001 0.0 0.1 637036 3032 ? Ssl Jan26 0:10 lxcfs
daemon 1002 0.0 0.0 28336 1860 ? Ss Jan26 0:00 atd
message+ 1010 0.0 0.1 50480 3160 ? Ss Jan26 6:50 dbus-daemon
root 1025 0.0 0.1 70512 3424 ? Ss Jan26 0:17 systemd-logind
root 1027 0.0 0.1 30032 2124 ? Ss Jan26 0:18 cron
root 1040 0.0 0.0 14672 1680 ttyS0 Ss+ Jan26 0:00 agetty
root 1045 0.0 0.1 288884 2796 ? Ssl Jan26 3:35 polkitd
root 1046 0.0 0.0 14896 1560 tty1 Ss+ Jan26 0:00 agetty
root 1048 0.1 0.5 1280276 10712 ? Ssl Jan26 104:20 containerd
root 1058 0.0 0.0 23064 212 ? Ss Jan26 56:57 qemu-ga
root 1063 0.0 0.1 72304 2540 ? Ss Jan26 6:05 sshd
root 3947 0.5 0.3 107988 7008 ? Ss 18:49 0:00 \_ sshd
root 4065 0.0 0.1 38504 3616 ? Rs 18:49 0:00 | \_ ps
root 3979 0.0 0.3 108016 6916 ? Ss 18:49 0:00 \_ sshd
sshd 3981 0.0 0.1 72304 2880 ? S 18:49 0:00 \_ sshd
root 1066 0.0 0.2 185952 4280 ? Ssl Jan26 0:00 unattended-upgr
root 1100 0.0 1.1 1419756 23892 ? Ssl Jan26 14:16 dockerd
root 1280 0.0 0.0 1004936 968 ? Sl Jan26 0:12 \_ docker-proxy
root 1286 0.0 0.0 1004936 1272 ? Sl Jan26 0:11 \_ docker-proxy
root 1297 0.0 0.0 1152400 1192 ? Sl Jan26 0:12 \_ docker-proxy
root 1303 0.0 0.0 1078668 1204 ? Sl Jan26 0:11 \_ docker-proxy
root 1323 0.0 0.2 712452 4136 ? Sl Jan26 31:37 containerd-shim
root 1354 0.0 0.1 6832 2612 ? Ss+ Jan26 0:00 \_ boot
root 2003 0.0 0.0 2400 512 ? S+ Jan26 1:10 \_ runsvdir
root 2004 0.0 0.0 2248 400 ? Ss Jan26 0:00 \_ runsv
root 2017 0.0 0.0 151124 1596 ? Sl Jan26 0:06 | \_ rsyslogd
root 2005 0.0 0.0 2248 384 ? Ss Jan26 0:00 \_ runsv
root 2015 0.0 0.1 6680 2172 ? S Jan26 0:24 | \_ cron
root 2006 0.0 0.0 2248 416 ? Ss Jan26 0:00 \_ runsv
ddiscou+ 2012 0.0 0.1 15316 3584 ? S Jan26 45:11 | \_ unicorn_launche
ddiscou+ 2055 0.0 10.5 454612 210264 ? Sl Jan26 11:12 | \_ ruby
ddiscou+ 2246 0.5 14.5 926788 290744 ? SNl Jan26 360:44 | | \_ ruby
ddiscou+ 2256 0.0 15.1 901636 301472 ? Sl Jan26 37:54 | | \_ ruby
ddiscou+ 2264 0.0 14.5 832344 289952 ? Sl Jan26 14:48 | | \_ ruby
ddiscou+ 3949 0.0 0.1 13820 2252 ? S 18:49 0:00 | \_ sleep
root 2007 0.0 0.0 2248 480 ? Ss Jan26 0:00 \_ runsv
root 2014 0.0 0.0 2396 444 ? S Jan26 0:00 | \_ svlogd
systemd+ 2016 0.0 0.8 213228 16656 ? S Jan26 5:35 | \_ postmaster
systemd+ 2039 0.0 4.5 213452 89732 ? Ss Jan26 1:35 | \_ postmaster
systemd+ 2040 0.0 0.3 213228 7340 ? Ss Jan26 1:34 | \_ postmaster
systemd+ 2041 0.0 0.3 213228 6256 ? Ss Jan26 28:03 | \_ postmaster
systemd+ 2042 0.0 0.2 213912 4096 ? Ss Jan26 3:35 | \_ postmaster
systemd+ 2043 0.0 0.1 68296 3100 ? Ss Jan26 9:55 | \_ postmaster
systemd+ 2044 0.0 0.1 213784 3140 ? Ss Jan26 0:07 | \_ postmaster
systemd+ 2224 0.0 1.3 225228 26484 ? Ss Jan26 0:01 | \_ postmaster
systemd+ 2343 0.0 1.9 219580 37872 ? Ss Jan26 0:06 | \_ postmaster
systemd+ 23217 0.0 1.2 215120 24200 ? Ss Feb06 0:41 | \_ postmaster
systemd+ 3784 0.0 1.1 215500 22816 ? Ss 18:47 0:00 | \_ postmaster
root 2008 0.0 0.0 2248 1076 ? Ss Jan26 0:00 \_ runsv
root 2010 0.0 0.3 53844 6600 ? S Jan26 0:00 | \_ nginx
www-data 23129 0.0 0.4 56080 8940 ? S 01:33 0:04 | \_ nginx
www-data 23130 0.0 0.1 53844 2836 ? S 01:33 0:00 | \_ nginx
root 2009 0.0 0.0 2248 384 ? Ss Jan26 0:00 \_ runsv
root 2011 0.0 0.0 2396 324 ? S Jan26 0:06 \_ svlogd
message+ 2013 0.3 0.4 69808 8208 ? Sl Jan26 250:32 \_ redis-server
root 3950 1.0 0.3 76524 7188 ? Ss 18:49 0:00 systemd
root 3951 0.0 0.1 191444 2460 ? S 18:49 0:00 \_ (sd-pam)