Submitted by ghulamjafar2 on Wed, 02/17/2016 - 18:33 Pro Licensee
I have 16 GB Ram, and 5 GB virtual memory. As i reboot my server, it starts from using only 2+ GB RAM. But after few hours, it reaches on critical use of RAM, for example 96%. It never used Virtual memory. Finally after every 24 hours, I have to reboot it. Please suggest.
Status:
Closed (fixed)
Comments
Submitted by andreychek on Wed, 02/17/2016 - 18:58 Comment #1
Howdy -- whenever the RAM usage is high, what is the output of the following commands:
free -mps auxwf
That will give us an idea of what is going on within your server at the time.
Submitted by ghulamjafar2 on Sat, 02/20/2016 - 16:13 Pro Licensee Comment #2
[root@host ~]# free -m
total used free shared buff/cache available
Mem: 15857 793 360 81 14702 14690
Swap: 5119 0 5119
[root@host ~]# ps auxwf
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 2 0.0 0.0 0 0 ? S 00:01 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/0]
root 5 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/0:0H]
root 7 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/0]
root 8 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcu_bh]
root 9 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/0]
root 10 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/1]
root 11 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/2]
root 12 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/3]
root 13 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/4]
root 14 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/5]
root 15 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/6]
root 16 0.0 0.0 0 0 ? S 00:01 0:00 \_ [rcuob/7]
root 17 0.2 0.0 0 0 ? S 00:01 2:56 \_ [rcu_sched]
root 18 0.0 0.0 0 0 ? S 00:01 0:33 \_ [rcuos/0]
root 19 0.0 0.0 0 0 ? S 00:01 0:38 \_ [rcuos/1]
root 20 0.0 0.0 0 0 ? S 00:01 0:42 \_ [rcuos/2]
root 21 0.0 0.0 0 0 ? S 00:01 0:37 \_ [rcuos/3]
root 22 0.0 0.0 0 0 ? S 00:01 0:30 \_ [rcuos/4]
root 23 0.0 0.0 0 0 ? S 00:01 0:37 \_ [rcuos/5]
root 24 0.0 0.0 0 0 ? S 00:01 0:43 \_ [rcuos/6]
root 25 0.0 0.0 0 0 ? S 00:01 0:23 \_ [rcuos/7]
root 26 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/0]
root 27 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/1]
root 28 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/1]
root 29 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/1]
root 31 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/1:0H]
root 32 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/2]
root 33 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/2]
root 34 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/2]
root 36 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/2:0H]
root 37 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/3]
root 38 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/3]
root 39 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/3]
root 41 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/3:0H]
root 42 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/4]
root 43 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/4]
root 44 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/4]
root 46 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/4:0H]
root 47 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/5]
root 48 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/5]
root 49 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/5]
root 51 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/5:0H]
root 52 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/6]
root 53 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/6]
root 54 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/6]
root 56 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/6:0H]
root 57 0.0 0.0 0 0 ? S 00:01 0:00 \_ [watchdog/7]
root 58 0.0 0.0 0 0 ? S 00:01 0:00 \_ [migration/7]
root 59 0.0 0.0 0 0 ? S 00:01 0:00 \_ [ksoftirqd/7]
root 61 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kworker/7:0H]
root 62 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [khelper]
root 63 0.0 0.0 0 0 ? S 00:01 0:00 \_ [kdevtmpfs]
root 64 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [netns]
root 65 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [perf]
root 66 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [writeback]
root 67 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kintegrityd]
root 68 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [bioset]
root 69 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kblockd]
root 70 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [md]
root 76 0.0 0.0 0 0 ? S 00:01 0:00 \_ [khungtaskd]
root 77 0.0 0.0 0 0 ? S 00:01 0:02 \_ [kswapd0]
root 78 0.0 0.0 0 0 ? SN 00:01 0:00 \_ [ksmd]
root 79 0.0 0.0 0 0 ? SN 00:01 0:00 \_ [khugepaged]
root 80 0.0 0.0 0 0 ? S 00:01 0:00 \_ [fsnotify_mark]
root 81 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [crypto]
root 89 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kthrotld]
root 92 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kmpath_rdacd]
root 96 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kpsmoused]
root 98 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [ipv6_addrconf]
root 117 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [deferwq]
root 149 0.0 0.0 0 0 ? S 00:01 0:01 \_ [kauditd]
root 289 0.0 0.0 0 0 ? S 00:01 0:00 \_ [scsi_eh_0]
root 293 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [scsi_tmf_0]
root 294 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [fw_event0]
root 297 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [ata_sff]
root 302 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [events_power_ef]
root 311 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [ttm_swap]
root 314 0.0 0.0 0 0 ? S 00:01 0:00 \_ [scsi_eh_1]
root 315 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [scsi_tmf_1]
root 316 0.0 0.0 0 0 ? S 00:01 0:00 \_ [scsi_eh_2]
root 317 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [scsi_tmf_2]
root 318 0.0 0.0 0 0 ? S 00:01 0:00 \_ [scsi_eh_3]
root 319 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [scsi_tmf_3]
root 320 0.0 0.0 0 0 ? S 00:01 0:00 \_ [scsi_eh_4]
root 321 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [scsi_tmf_4]
root 322 0.0 0.0 0 0 ? S 00:01 0:00 \_ [scsi_eh_5]
root 323 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [scsi_tmf_5]
root 324 0.0 0.0 0 0 ? S 00:01 0:00 \_ [scsi_eh_6]
root 325 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [scsi_tmf_6]
root 335 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [poll_0_status]
root 354 0.0 0.0 0 0 ? S 00:01 0:02 \_ [jbd2/sda2-8]
root 355 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [ext4-rsv-conver]
root 356 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [ext4-unrsv-conv]
root 533 0.0 0.0 0 0 ? SN 00:01 0:00 \_ [kipmi0]
root 538 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [kvm-irqfd-clean]
root 539 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [edac-poller]
root 562 0.0 0.0 0 0 ? S 00:01 0:00 \_ [jbd2/sda1-8]
root 563 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [ext4-rsv-conver]
root 564 0.0 0.0 0 0 ? S< 00:01 0:00 \_ [ext4-unrsv-conv]
root 2993 0.0 0.0 0 0 ? S< 00:02 0:00 \_ [kworker/6:1H]
root 5827 0.0 0.0 0 0 ? S< 00:17 0:00 \_ [kworker/0:1H]
root 13124 0.0 0.0 0 0 ? S< 00:44 0:00 \_ [kworker/4:1H]
root 1107 0.0 0.0 0 0 ? S< 02:10 0:00 \_ [kworker/1:1H]
root 11746 0.0 0.0 0 0 ? S< 02:55 0:00 \_ [kworker/2:1H]
root 23038 0.0 0.0 0 0 ? S< 03:40 0:00 \_ [kworker/5:1H]
root 23267 0.0 0.0 0 0 ? S 20:52 0:00 \_ [kworker/6:2]
root 24235 0.0 0.0 0 0 ? S 20:57 0:00 \_ [kworker/6:0]
root 26910 0.0 0.0 0 0 ? S 21:12 0:00 \_ [kworker/7:1]
root 28768 0.0 0.0 0 0 ? S 21:22 0:00 \_ [kworker/7:0]
root 32759 0.0 0.0 0 0 ? S 22:03 0:00 \_ [kworker/0:1]
root 2951 0.0 0.0 0 0 ? S 22:17 0:00 \_ [kworker/u16:0]
root 4495 0.0 0.0 0 0 ? S 22:31 0:00 \_ [kworker/u16:2]
root 4783 0.0 0.0 0 0 ? S 22:34 0:00 \_ [kworker/5:2]
root 5295 0.0 0.0 0 0 ? S 22:39 0:00 \_ [kworker/5:0]
root 6061 0.0 0.0 0 0 ? S 22:44 0:00 \_ [kworker/1:1]
root 6062 0.0 0.0 0 0 ? S 22:44 0:00 \_ [kworker/3:2]
root 6474 0.0 0.0 0 0 ? S 22:49 0:00 \_ [kworker/2:2]
root 7174 0.0 0.0 0 0 ? S 22:55 0:00 \_ [kworker/4:1]
root 7175 0.0 0.0 0 0 ? S 22:55 0:00 \_ [kworker/0:2]
root 7176 0.0 0.0 0 0 ? S 22:55 0:00 \_ [kworker/2:1]
root 7956 0.0 0.0 0 0 ? S 23:00 0:00 \_ [kworker/3:1]
root 7957 0.0 0.0 0 0 ? S 23:00 0:00 \_ [kworker/4:0]
root 7958 0.0 0.0 0 0 ? S 23:00 0:00 \_ [kworker/1:2]
root 8813 0.0 0.0 0 0 ? S 23:05 0:00 \_ [kworker/6:1]
root 1 0.0 0.0 41484 3944 ? Ss 00:01 0:08 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
root 428 0.0 0.0 45168 9308 ? Ss 00:01 0:29 /usr/lib/systemd/systemd-journald
root 455 0.0 0.0 118476 1276 ? Ss 00:01 0:00 /usr/sbin/lvmetad -f
root 460 0.0 0.0 43180 1936 ? Ss 00:01 0:01 /usr/lib/systemd/systemd-udevd
root 580 0.0 0.0 116720 1644 ? S<sl 00:01 0:03 /sbin/auditd -n
dbus 603 0.0 0.0 28808 1924 ? Ss 00:01 0:04 /bin/dbus-daemon --system --address=systemd: --nofork --nopidfile -
root 605 0.0 0.0 19288 1216 ? Ss 00:01 0:04 /usr/sbin/irqbalance --foreground
libstor+ 606 0.0 0.0 8528 816 ? Ss 00:01 0:00 /usr/bin/lsmd -d
root 608 0.0 0.1 323556 23296 ? Ssl 00:01 0:00 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
root 609 0.0 0.0 26396 1744 ? Ss 00:01 0:02 /usr/lib/systemd/systemd-logind
root 614 0.0 0.0 210288 5316 ? Ss 00:01 0:00 /usr/sbin/abrtd -d -s
root 615 0.3 0.0 4372 596 ? Ss 00:01 4:47 /sbin/rngd -f
root 616 0.0 0.0 276148 14600 ? Ssl 00:01 0:14 /usr/sbin/rsyslogd -n
root 619 0.0 0.0 130056 2256 ? Ss 00:01 0:00 /usr/sbin/smartd -n -q never
root 623 0.0 0.0 207968 4528 ? Ss 00:01 0:00 /usr/bin/abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: pos
chrony 632 0.0 0.0 115840 1896 ? S 00:01 0:00 /usr/sbin/chronyd
root 635 0.0 0.0 25960 948 ? Ss 00:01 0:00 /usr/sbin/atd -f
root 636 0.0 0.0 126328 1592 ? Ss 00:01 0:00 /usr/sbin/crond -n
root 24821 0.0 0.0 178100 2492 ? S 21:00 0:00 \_ /usr/sbin/CROND -n
root 24823 0.0 0.0 113116 1464 ? Ss 21:00 0:00 \_ /bin/bash /usr/share/clamav/freshclam-sleep
root 24829 0.0 0.0 107892 612 ? S 21:00 0:00 \_ sleep 7852
root 643 0.0 0.0 110032 852 tty1 Ss+ 00:01 0:00 /sbin/agetty --noclear tty1 linux
root 650 0.0 0.0 75532 1840 ? Ss 00:01 0:00 /usr/sbin/saslauthd -m /run/saslauthd -a pam -r
root 651 0.0 0.0 75532 1812 ? S 00:01 0:00 \_ /usr/sbin/saslauthd -m /run/saslauthd -a pam -r
root 652 0.0 0.0 75532 1832 ? S 00:01 0:00 \_ /usr/sbin/saslauthd -m /run/saslauthd -a pam -r
root 653 0.0 0.0 75532 1832 ? S 00:01 0:00 \_ /usr/sbin/saslauthd -m /run/saslauthd -a pam -r
root 654 0.0 0.0 75532 1812 ? S 00:01 0:00 \_ /usr/sbin/saslauthd -m /run/saslauthd -a pam -r
root 715 0.0 0.0 436904 10144 ? Ssl 00:01 0:24 /usr/sbin/NetworkManager --no-daemon
root 932 0.0 0.0 53056 2720 ? Ss 00:01 0:00 /usr/sbin/wpa_supplicant -u -f /var/log/wpa_supplicant.log -c /etc/
polkitd 933 0.0 0.0 530352 12732 ? Ssl 00:01 0:00 /usr/lib/polkit-1/polkitd --no-debug
root 1288 0.0 0.0 82548 3608 ? Ss 00:01 0:00 /usr/sbin/sshd -D
root 8966 0.1 0.0 142928 5524 ? Ss 23:07 0:00 \_ sshd: root@pts/0
root 8978 0.0 0.0 116036 2688 pts/0 Ss 23:07 0:00 \_ -bash
root 9024 0.0 0.0 151328 2080 pts/0 R+ 23:08 0:00 \_ ps auxwf
root 1291 0.0 0.1 553064 16408 ? Ssl 00:01 0:06 /usr/bin/python -Es /usr/sbin/tuned -l -P
root 1423 0.0 0.0 19868 1620 ? Ss 00:01 0:00 /usr/sbin/dovecot -F
dovecot 2515 0.0 0.0 9312 1012 ? S 00:01 0:00 \_ dovecot/anvil
root 2517 0.0 0.0 9440 1192 ? S 00:01 0:00 \_ dovecot/log
root 30898 0.0 0.0 12328 2084 ? S 12:50 0:00 \_ dovecot/config
mysql 2354 0.0 0.0 113252 1608 ? Ss 00:01 0:00 /bin/sh /usr/bin/mysqld_safe --basedir=/usr
mysql 2783 5.1 2.4 2320824 396132 ? Sl 00:01 71:31 \_ /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --p
root 2653 0.0 0.0 93212 2200 ? Ss 00:01 0:00 /usr/libexec/postfix/master -w
postfix 2785 0.0 0.0 93384 3888 ? S 00:01 0:00 \_ qmgr -l -t unix -u
postfix 30830 0.0 0.0 93316 3868 ? S 21:42 0:00 \_ pickup -l -t unix -u
root 2737 0.0 0.1 94996 17172 ? Ss 00:01 0:00 /usr/bin/perl /usr/libexec/usermin/miniserv.pl /etc/usermin/miniser
root 2786 0.0 0.1 96044 18328 ? Ss 00:01 0:02 /usr/bin/perl /usr/libexec/webmin/miniserv.pl /etc/webmin/miniserv.
named 2789 0.2 0.2 700972 40852 ? Ssl 00:01 2:58 /usr/sbin/named -u named
root 2814 0.0 0.1 529460 21160 ? Ss 00:01 0:14 /usr/sbin/httpd -DFOREGROUND
apache 2902 0.0 0.0 294816 5388 ? S 00:01 0:00 \_ /usr/sbin/httpd -DFOREGROUND
paksear+ 2939 0.0 0.3 465780 54120 ? S 00:01 1:18 | \_ /bin/php-cgi
sstudies 3358 0.0 0.0 317272 15640 ? S 00:04 0:00 | \_ /bin/php-cgi
paksear+ 8363 0.0 0.3 362248 54260 ? S 00:26 0:57 | \_ /bin/php-cgi
watchne+ 8523 0.0 0.0 317012 15108 ? S 00:27 0:00 | \_ /bin/php-cgi
sstudies 24650 0.0 0.0 317272 15572 ? S 01:30 0:00 | \_ /bin/php-cgi
sstudies 24655 0.0 0.0 317272 15608 ? S 01:30 0:00 | \_ /bin/php-cgi
awaztod+ 1494 0.0 0.0 317004 15144 ? S 02:12 0:00 | \_ /bin/php-cgi
apache 8563 0.0 0.0 531680 11924 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8564 0.0 0.0 531680 11924 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8568 0.0 0.0 531680 11936 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8570 0.0 0.0 531680 11944 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8571 0.0 0.0 531680 11928 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8572 0.0 0.0 531680 11928 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8575 0.0 0.0 531680 11924 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8584 0.0 0.0 531680 11912 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8588 0.0 0.0 531704 11908 ? S 23:04 0:00 \_ /usr/sbin/httpd -DFOREGROUND
apache 8837 0.0 0.0 531680 11960 ? S 23:05 0:00 \_ /usr/sbin/httpd -DFOREGROUND
root 8994 0.0 0.0 259000 6340 ? Sl 23:07 0:00 /usr/sbin/abrt-dbus -t133
[root@host ~]#
Submitted by ghulamjafar2 on Sat, 02/20/2016 - 16:28 Pro Licensee Comment #3
Is this URL answer my problem?
http://www.linuxatemyram.com/
Submitted by andreychek on Sat, 02/20/2016 - 16:49 Comment #4
I didn't know of that site... but yup, that's exactly it!
Your RAM usage looks completely normal.
Any RAM you see listed in the " buff/cache" section of the "free" output is actually considered available, it's just that the Linux kernel is making temporary use of it until it's needed for other things.
Submitted by ghulamjafar2 on Mon, 02/22/2016 - 23:01 Pro Licensee Comment #5