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]