When use command ps aux we get this output:
[root@tutorialspots ~]# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.0 190960 3880 ? Ss Dec28 0:50 /usr/lib/systemd/systemd --switched-root --system --deserialize 22 root 2 0.0 0.0 0 0 ? S Dec28 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S Dec28 0:12 [ksoftirqd/0] root 5 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/0:0H] root 7 0.0 0.0 0 0 ? S Dec28 0:02 [migration/0] root 8 0.0 0.0 0 0 ? S Dec28 0:00 [rcu_bh] root 9 0.0 0.0 0 0 ? S Dec28 1:27 [rcu_sched] root 10 0.0 0.0 0 0 ? S< Dec28 0:00 [lru-add-drain] root 11 0.0 0.0 0 0 ? S Dec28 0:00 [watchdog/0] root 12 0.0 0.0 0 0 ? S Dec28 0:00 [watchdog/1] root 13 0.0 0.0 0 0 ? S Dec28 0:00 [migration/1] root 14 0.0 0.0 0 0 ? S Dec28 0:01 [ksoftirqd/1] root 16 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/1:0H] root 17 0.0 0.0 0 0 ? S Dec28 0:00 [watchdog/2] root 18 0.0 0.0 0 0 ? S Dec28 0:00 [migration/2] root 19 0.0 0.0 0 0 ? S Dec28 0:01 [ksoftirqd/2] root 21 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/2:0H] root 22 0.0 0.0 0 0 ? S Dec28 0:00 [watchdog/3] root 23 0.0 0.0 0 0 ? S Dec28 0:00 [migration/3] root 24 0.0 0.0 0 0 ? S Dec28 0:02 [ksoftirqd/3] root 26 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/3:0H] root 28 0.0 0.0 0 0 ? S Dec28 0:00 [kdevtmpfs] root 29 0.0 0.0 0 0 ? S< Dec28 0:00 [netns] root 30 0.0 0.0 0 0 ? S Dec28 0:00 [khungtaskd] root 31 0.0 0.0 0 0 ? S< Dec28 0:00 [writeback] root 32 0.0 0.0 0 0 ? S< Dec28 0:00 [kintegrityd] root 33 0.0 0.0 0 0 ? S< Dec28 0:00 [bioset] root 34 0.0 0.0 0 0 ? S< Dec28 0:00 [bioset] root 35 0.0 0.0 0 0 ? S< Dec28 0:00 [bioset] root 36 0.0 0.0 0 0 ? S< Dec28 0:00 [kblockd] root 37 0.0 0.0 0 0 ? S< Dec28 0:00 [md] root 38 0.0 0.0 0 0 ? S< Dec28 0:00 [edac-poller] root 41 0.0 0.0 0 0 ? S Dec28 0:00 [kswapd0] root 42 0.0 0.0 0 0 ? SN Dec28 0:00 [ksmd] root 43 0.0 0.0 0 0 ? SN Dec28 0:05 [khugepaged] root 44 0.0 0.0 0 0 ? S< Dec28 0:00 [crypto] root 52 0.0 0.0 0 0 ? S< Dec28 0:00 [kthrotld] root 54 0.0 0.0 0 0 ? S< Dec28 0:00 [kmpath_rdacd] root 55 0.0 0.0 0 0 ? S< Dec28 0:00 [kaluad] root 57 0.0 0.0 0 0 ? S< Dec28 0:00 [kpsmoused] root 59 0.0 0.0 0 0 ? S< Dec28 0:00 [ipv6_addrconf] root 72 0.0 0.0 0 0 ? S< Dec28 0:00 [deferwq] root 106 0.0 0.0 0 0 ? S Dec28 0:07 [kauditd] root 284 0.0 0.0 0 0 ? S< Dec28 0:00 [ata_sff] root 285 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_0] root 286 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_0] root 287 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_1] root 288 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_1] root 294 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_2] root 295 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_2] root 296 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_3] root 297 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_3] root 299 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_4] root 300 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_4] root 301 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_5] root 302 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_5] root 304 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_6] root 305 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_6] root 306 0.0 0.0 0 0 ? S Dec28 0:00 [scsi_eh_7] root 307 0.0 0.0 0 0 ? S< Dec28 0:00 [scsi_tmf_7] root 318 0.0 0.0 0 0 ? S< Dec28 0:00 [ttm_swap] root 390 0.0 0.0 0 0 ? S< Dec28 0:00 [kdmflush] root 391 0.0 0.0 0 0 ? S< Dec28 0:00 [bioset] root 401 0.0 0.0 0 0 ? S< Dec28 0:00 [kdmflush] root 402 0.0 0.0 0 0 ? S< Dec28 0:00 [bioset] root 412 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/3:1H] root 419 0.0 0.0 0 0 ? S Dec28 0:17 [jbd2/dm-0-8] root 420 0.0 0.0 0 0 ? S< Dec28 0:00 [ext4-rsv-conver] root 489 0.1 0.2 100676 44384 ? Ss Dec28 2:21 /usr/lib/systemd/systemd-journald root 502 0.0 0.0 190328 1312 ? Ss Dec28 0:00 /usr/sbin/lvmetad -f root 520 0.0 0.0 44628 2120 ? Ss Dec28 0:00 /usr/lib/systemd/systemd-udevd root 558 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/1:1H] root 568 0.0 0.0 0 0 ? S< Dec28 0:00 [kvm-irqfd-clean] root 580 0.0 0.0 0 0 ? S Dec28 0:00 [jbd2/sdb1-8] root 581 0.0 0.0 0 0 ? S< Dec28 0:00 [ext4-rsv-conver] root 587 0.0 0.0 0 0 ? S< Dec28 0:00 [ext4-rsv-conver] root 590 0.0 0.0 0 0 ? S< Dec28 0:00 [kdmflush] root 591 0.0 0.0 0 0 ? S< Dec28 0:00 [bioset] root 603 0.0 0.0 0 0 ? S Dec28 0:00 [jbd2/dm-2-8] root 604 0.0 0.0 0 0 ? S< Dec28 0:00 [ext4-rsv-conver] root 621 0.0 0.0 55508 1056 ? S<sl Dec28 0:21 /sbin/auditd polkitd 648 0.0 0.0 538436 12040 ? Ssl Dec28 0:19 /usr/lib/polkit-1/polkitd --no-debug root 649 0.0 0.0 21524 1180 ? Ss Dec28 0:10 /usr/sbin/irqbalance --foreground dbus 651 0.0 0.0 58220 2416 ? Ss Dec28 1:06 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-acti root 653 0.0 0.0 26376 1680 ? Ss Dec28 0:23 /usr/lib/systemd/systemd-logind root 656 0.0 0.0 16884 1000 ? SNs Dec28 0:00 /usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --initfile= root 658 0.0 0.0 478440 9000 ? Ssl Dec28 0:10 /usr/sbin/NetworkManager --no-daemon chrony 663 0.0 0.0 117752 1780 ? S Dec28 0:00 /usr/sbin/chronyd root 666 0.0 0.0 126276 1544 ? Ss Dec28 0:03 /usr/sbin/crond -n root 685 0.0 0.0 110088 832 tty1 Ss+ Dec28 0:00 /sbin/agetty --noclear tty1 linux root 732 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/2:1H] root 733 0.0 0.0 0 0 ? S< Dec28 0:00 [kworker/0:1H] memcach+ 923 0.0 0.0 347156 4768 ? Ssl Dec28 0:07 /usr/bin/memcached -u memcached -p 11211 -m 64 -c 1024 root 925 0.0 0.1 573816 18908 ? Ssl Dec28 0:14 /usr/bin/python -Es /usr/sbin/tuned -l -P root 930 0.0 0.0 112812 4240 ? Ss Dec28 0:11 /usr/sbin/sshd -D root 935 0.0 0.1 388340 26428 ? Ssl Dec28 1:09 /usr/sbin/rsyslogd -n named 1005 0.1 1.2 531252 206456 ? Ssl Dec28 3:10 /usr/sbin/named -u named -c /etc/named.conf root 1104 0.0 0.0 123412 2580 ? Ss Dec28 0:00 nginx: master process /usr/sbin/nginx nginx 1105 0.3 0.0 126520 6692 ? S Dec28 7:06 nginx: worker process nginx 1106 0.5 0.0 124208 4296 ? S Dec28 10:02 nginx: worker process nginx 1107 2.5 0.1 141952 22428 ? S Dec28 47:53 nginx: worker process nginx 1108 1.9 0.1 136552 16764 ? S Dec28 36:37 nginx: worker process mysql 1137 0.1 1.3 2652904 208600 ? Sl Dec28 3:35 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid root 2648 0.1 0.2 926696 36564 ? Ssl Dec28 2:44 PM2 v3.0.3: God Daemon (/root/.pm2) root 2683 0.0 0.3 1097416 49228 ? Sl Dec28 1:29 node /home/fbserver/index.js root 2689 0.0 0.3 1097520 48288 ? Sl Dec28 1:26 node /home/fbserver/index.js root 2695 0.0 0.2 1095280 47812 ? Sl Dec28 1:27 node /home/fbserver/index.js root 2701 0.0 0.3 1229528 49292 ? Sl Dec28 1:27 node /home/fbserver/index.js root 6602 0.0 0.0 0 0 ? S 00:54 0:09 [kworker/u16:0] root 11087 0.0 0.0 0 0 ? S 05:54 0:00 [kworker/u16:2] root 12569 0.0 0.0 156684 5440 ? Ss 08:14 0:00 sshd: root@pts/0 root 12578 0.0 0.0 72180 2784 ? Ss 08:14 0:00 /usr/libexec/openssh/sftp-server php-fpm 16091 0.7 0.1 523580 16788 ? S 04:00 2:19 php-fpm: pool www root 16296 0.0 0.0 0 0 ? S 08:30 0:00 [kworker/1:0] root 17379 0.0 0.0 115528 2124 pts/0 Ss 08:34 0:00 -bash root 17580 0.0 0.0 0 0 ? S 08:35 0:00 [kworker/0:2] root 19188 0.0 0.0 0 0 ? S 08:41 0:00 [kworker/2:1] root 20538 0.0 0.0 0 0 ? S 08:47 0:00 [kworker/2:0] root 20798 0.0 0.0 0 0 ? S 08:48 0:00 [kworker/3:1] root 21166 0.0 0.0 0 0 ? S 08:50 0:00 [kworker/1:2] root 21340 0.0 0.0 182320 2436 ? S 08:51 0:00 /usr/sbin/CROND -n root 21363 0.0 0.0 113172 1180 ? Ss 08:51 0:00 /bin/sh -c cd /home/yt && php artisan schedule:run >> /dev/null 2>&1 root 21371 0.0 0.1 448040 28652 ? S 08:51 0:00 php artisan schedule:run root 21400 0.0 0.0 113172 1184 ? S 08:51 0:00 sh -c '/usr/bin/php' 'artisan' auto:reup > '/dev/null' 2>&1 root 21401 0.2 0.2 539372 39992 ? S 08:51 0:01 /usr/bin/php artisan auto:reup root 21870 0.0 0.0 0 0 ? S 08:53 0:00 [kworker/2:2] root 22609 0.0 0.0 0 0 ? S 08:56 0:00 [kworker/0:1] root 22637 0.0 0.0 0 0 ? S 08:56 0:00 [kworker/3:2] root 22864 0.0 0.0 0 0 ? S 08:57 0:00 [kworker/1:1] root 23304 214 1.0 1623712 167868 ? Sl 08:58 6:05 /usr/bin/ffmpeg -i public/library/2018/12/Y2vc2qXbZkY.mp4 -i public/download/process php-fpm 23309 0.0 0.0 29048 1564 ? S 02:04 0:02 ping google.com root 24015 0.0 0.0 158816 5076 ? Ss 09:01 0:00 sshd: root [priv] sshd 24016 0.0 0.0 112812 2224 ? S 09:01 0:00 sshd: root [net] root 24028 0.0 0.0 155324 1824 pts/0 R+ 09:01 0:00 ps aux root 25492 0.0 0.1 438992 18452 ? Ss Dec28 0:02 php-fpm: master process (/etc/php-fpm.conf) php-fpm 25765 0.9 0.1 523972 17212 ? S Dec28 6:59 php-fpm: pool www php-fpm 25962 0.9 0.1 523988 17228 ? S Dec28 6:50 php-fpm: pool www php-fpm 25994 0.9 0.1 523560 16780 ? S Dec28 6:51 php-fpm: pool www php-fpm 26243 1.0 0.1 523968 17208 ? S Dec28 7:25 php-fpm: pool www php-fpm 26248 0.9 0.1 523492 16788 ? S Dec28 6:40 php-fpm: pool www php-fpm 26254 0.9 0.1 523972 17116 ? S Dec28 7:03 php-fpm: pool www php-fpm 26359 0.9 0.1 523632 17000 ? S Dec28 6:54 php-fpm: pool www php-fpm 26385 0.9 0.1 523508 16796 ? S Dec28 6:47 php-fpm: pool www php-fpm 26388 0.9 0.1 524856 18908 ? S Dec28 7:07 php-fpm: pool www php-fpm 26389 0.8 0.1 523976 17240 ? S Dec28 6:26 php-fpm: pool www php-fpm 26393 0.9 0.1 523988 17192 ? S Dec28 6:34 php-fpm: pool www php-fpm 26394 0.9 0.1 523636 16976 ? S Dec28 7:10 php-fpm: pool www php-fpm 26395 0.9 0.1 523988 17200 ? S Dec28 7:05 php-fpm: pool www php-fpm 26396 0.9 0.1 523516 16796 ? S Dec28 6:54 php-fpm: pool www php-fpm 26403 0.9 0.1 523996 17208 ? S Dec28 7:09 php-fpm: pool www php-fpm 26404 0.9 0.1 524556 17384 ? S Dec28 6:40 php-fpm: pool www php-fpm 26405 1.0 0.1 523548 16776 ? S Dec28 7:38 php-fpm: pool www php-fpm 26406 0.3 0.1 527752 20752 ? S Dec28 2:52 php-fpm: pool www php-fpm 26408 0.9 0.1 524088 16996 ? S Dec28 6:45 php-fpm: pool www php-fpm 26414 0.9 0.1 523632 17008 ? S Dec28 7:05 php-fpm: pool www php-fpm 26415 0.9 0.1 523628 17004 ? S Dec28 7:11 php-fpm: pool www php-fpm 26416 0.9 0.1 524580 17384 ? S Dec28 6:44 php-fpm: pool www php-fpm 26417 0.9 0.1 523980 17196 ? S Dec28 6:53 php-fpm: pool www php-fpm 26418 0.9 0.1 523984 17332 ? S Dec28 6:52 php-fpm: pool www php-fpm 26422 0.9 0.1 523992 17196 ? S Dec28 7:00 php-fpm: pool www php-fpm 26423 0.9 0.1 523980 17200 ? S Dec28 6:41 php-fpm: pool www php-fpm 26424 0.9 0.1 523500 16696 ? S Dec28 6:57 php-fpm: pool www php-fpm 26430 0.9 0.1 524096 16964 ? S Dec28 6:57 php-fpm: pool www php-fpm 26434 1.0 0.1 524592 17384 ? S Dec28 7:41 php-fpm: pool www php-fpm 26436 1.0 0.1 523496 16784 ? S Dec28 7:17 php-fpm: pool www php-fpm 27241 1.1 0.1 523632 17008 ? S Dec28 8:08 php-fpm: pool www php-fpm 27249 0.9 0.1 524560 17420 ? S Dec28 6:56 php-fpm: pool www php-fpm 27250 0.9 0.1 523596 17024 ? S Dec28 7:06 php-fpm: pool www php-fpm 27267 1.0 0.1 524532 17384 ? S Dec28 7:18 php-fpm: pool www php-fpm 27268 0.8 0.1 524156 16996 ? S Dec28 6:19 php-fpm: pool www php-fpm 27269 1.0 0.1 523968 17240 ? S Dec28 7:12 php-fpm: pool www php-fpm 28458 0.9 0.1 523968 17188 ? S 02:26 3:34 php-fpm: pool www
What does each column of the output mean?
- USER = user owning the process
- PID = process ID of the process
- %CPU = It is the CPU time used divided by the time the process has been running.
- %MEM = ratio of the process’s resident set size to the physical memory on the machine
- VSZ = virtual memory usage of entire process (in KiB)
- RSS = resident set size, the non-swapped physical memory that a task has used (in KiB)
- TTY = controlling tty (terminal)
- STAT = multi-character process state
- START = starting time or date of the process
- TIME = cumulative CPU time
- COMMAND = command with all its arguments
