hello,
any explanations regarding this output
Real memory: 989.32 MB total / 363.32 MB free / 245.52 MB cached Swap space: 512 MB total / 302.80 MB free
ID Owner Size Command
4054 mysql 1.13 GB /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/li …
3577 root 549.21 MB /usr/bin/python -Es /usr/sbin/tuned -l -P
3263 root 543.57 MB /usr/sbin/NetworkManager --no-daemon
3201 polkitd 522.36 MB /usr/lib/polkit-1/polkitd --no-debug
3792 clamscan 505.32 MB /usr/sbin/clamd -c /etc/clamd.d/scan.conf --foreground=yes
5177 sahara 441.45 MB /opt/rh/rh-php70/root/usr/bin/php-cgi
4828 apache 411 MB /usr/sbin/httpd -DFOREGROUND
4829 apache 411 MB /usr/sbin/httpd -DFOREGROUND
4830 apache 411 MB /usr/sbin/httpd -DFOREGROUND
4831 apache 411 MB /usr/sbin/httpd -DFOREGROUND
4832 apache 411 MB /usr/sbin/httpd -DFOREGROUND
4894 apache 411 MB /usr/sbin/httpd -DFOREGROUND
3796 root 410.87 MB /usr/sbin/httpd -DFOREGROUND
5179 apache 410.87 MB /usr/sbin/httpd -DFOREGROUND
5180 sahara 370.38 MB /opt/rh/rh-php70/root/usr/bin/php-cgi
3262 root 330.33 MB /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
4826 apache 275.15 MB /usr/sbin/httpd -DFOREGROUND
3199 root 205.34 MB /usr/sbin/rsyslogd -n
4126 root 192.25 MB /usr/libexec/webmin/virtual-server/lookup-domain-daemon.pl
1 root 186.97 MB /sbin/init
3940 nobody 183.67 MB proftpd: (accepting connections)
3655 named 162.34 MB /usr/sbin/named -u named -c /etc/named.conf
6016 root 147.89 MB /usr/libexec/webmin/proc/index_size.cgi
3249 root 123.28 MB /usr/sbin/crond -n
3224 chrony 112.94 MB /usr/sbin/chronyd
5947 postfix 112.81 MB smtpd -n smtp -t inet -u -o stress= -s 2 -o smtpd_sasl_auth_enable=yes
3635 mysql 110.61 MB /bin/sh /usr/bin/mysqld_safe --basedir=/usr
3251 root 107.47 MB /sbin/agetty --noclear tty1 linux
3252 root 107.47 MB /sbin/agetty --keep-baud 115200 38400 9600 ttyS0 vt220
3574 root 103.52 MB /usr/sbin/sshd -D
3968 root 94.43 MB /usr/bin/perl /usr/libexec/webmin/miniserv.pl /etc/webmin/miniserv.conf
6012 root 94.43 MB /usr/bin/perl /usr/libexec/webmin/miniserv.pl /etc/webmin/miniserv.conf
6013 root 94.43 MB /usr/bin/perl /usr/libexec/webmin/miniserv.pl /etc/webmin/miniserv.conf
4060 root 91.94 MB /usr/bin/perl /usr/libexec/usermin/miniserv.pl /etc/usermin/miniserv.conf
4093 postfix 87.62 MB qmgr -l -t unix -u
4092 postfix 87.55 MB pickup -l -t unix -u
5949 postfix 87.55 MB anvil -l -t unix -u
5948 postfix 87.53 MB proxymap -t unix -u
4089 root 87.45 MB /usr/libexec/postfix/master -w
3231 root 72.19 MB /usr/sbin/saslauthd -m /run/saslauthd -a pam
3242 root 72.19 MB /usr/sbin/saslauthd -m /run/saslauthd -a pam
3243 root 72.19 MB /usr/sbin/saslauthd -m /run/saslauthd -a pam
3244 root 72.19 MB /usr/sbin/saslauthd -m /run/saslauthd -a pam
3245 root 72.19 MB /usr/sbin/saslauthd -m /run/saslauthd -a pam
2197 root 54.16 MB /sbin/auditd
6063 root 46.34 MB ps --cols 2048 -eo user:80,ruser:80,group:80,rgroup:80,pid,ppid,pgid,pcpu,vsz,ni …
2056 root 41.28 MB /usr/lib/systemd/systemd-udevd
2035 root 34.30 MB /usr/lib/systemd/systemd-journald
3212 dbus 23.98 MB /bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-acti …
3211 root 23.64 MB /usr/lib/systemd/systemd-logind
6062 root 11.37 MB sh -c ps --cols 2048 -eo user:80,ruser:80,group:80,rgroup:80,pid,ppid,pgid,pcpu, …
2 root 0 kB [kthreadd]
3 root 0 kB [ksoftirqd/0]
5 root 0 kB [kworker/0:0H]
7 root 0 kB [rcu_sched]
8 root 0 kB [rcu_bh]
9 root 0 kB [migration/0]
10 root 0 kB [lru-add-drain]
11 root 0 kB [cpuhp/0]
12 root 0 kB [kdevtmpfs]
13 root 0 kB [netns]
14 root 0 kB [kworker/u2:1]
26 root 0 kB [oom_reaper]
188 root 0 kB [kworker/u2:3]
315 root 0 kB [writeback]
316 root 0 kB [kcompactd0]
318 root 0 kB [crypto]
319 root 0 kB [kintegrityd]
320 root 0 kB [bioset]
322 root 0 kB [kblockd]
436 root 0 kB [ata_sff]
450 root 0 kB [md]
545 root 0 kB [rpciod]
547 root 0 kB [xprtiod]
693 root 0 kB [kswapd0]
694 root 0 kB [vmstat]
800 root 0 kB [ecryptfs-kthrea]
802 root 0 kB [nfsiod]
811 root 0 kB [cifsiod]
812 root 0 kB [cifsoplockd]
825 root 0 kB [jfsIO]
826 root 0 kB [jfsCommit]
827 root 0 kB [jfsSync]
828 root 0 kB [bioset]
836 root 0 kB [xfsalloc]
837 root 0 kB [xfs_mru_cache]
839 root 0 kB [glock_workqueue]
840 root 0 kB [delete_workqueu]
845 root 0 kB [gfs_recovery]
942 root 0 kB [acpi_thermal_pm]
1476 root 0 kB [bioset]
1477 root 0 kB [bioset]
1478 root 0 kB [bioset]
1479 root 0 kB [bioset]
1480 root 0 kB [bioset]
1481 root 0 kB [bioset]
1482 root 0 kB [bioset]
1483 root 0 kB [bioset]
1484 root 0 kB [bioset]
1485 root 0 kB [bioset]
1486 root 0 kB [bioset]
1487 root 0 kB [bioset]
1488 root 0 kB [bioset]
1489 root 0 kB [bioset]
1490 root 0 kB [bioset]
1491 root 0 kB [bioset]
1525 root 0 kB [bioset]
1528 root 0 kB [bioset]
1530 root 0 kB [bioset]
1533 root 0 kB [bioset]
1536 root 0 kB [bioset]
1539 root 0 kB [bioset]
1542 root 0 kB [bioset]
1545 root 0 kB [bioset]
1548 root 0 kB [bioset]
1550 root 0 kB [bioset]
1551 root 0 kB [bioset]
1552 root 0 kB [bioset]
1553 root 0 kB [bioset]
1554 root 0 kB [bioset]
1555 root 0 kB [bioset]
1556 root 0 kB [bioset]
1557 root 0 kB [bioset]
1558 root 0 kB [bioset]
1559 root 0 kB [bioset]
1560 root 0 kB [bioset]
1561 root 0 kB [bioset]
1562 root 0 kB [bioset]
1563 root 0 kB [bioset]
1564 root 0 kB [bioset]
1599 root 0 kB [bioset]
1600 root 0 kB [drbd-reissue]
1601 root 0 kB [rbd]
1603 root 0 kB [scsi_eh_0]
1604 root 0 kB [scsi_tmf_0]
1607 root 0 kB [bioset]
1614 root 0 kB [bioset]
1873 root 0 kB [scsi_eh_1]
1889 root 0 kB [scsi_tmf_1]
1892 root 0 kB [scsi_eh_2]
1893 root 0 kB [scsi_tmf_2]
1922 root 0 kB [raid5wq]
1928 root 0 kB [dm_bufio_cache]
1951 root 0 kB [ipv6_addrconf]
1968 root 0 kB [ceph-msgr]
1991 root 0 kB [bioset]
2008 root 0 kB [bioset]
2015 root 0 kB [bioset]
2019 root 0 kB [kworker/0:1H]
2020 root 0 kB [jbd2/sda-8]
2021 root 0 kB [ext4-rsv-conver]
2051 root 0 kB [kworker/0:5]
2053 root 0 kB [kauditd]
2054 root 0 kB [kworker/0:6]
6054 root 0 kB [kworker/0:0]
6057 root 0 kB [kworker/0:1]