Memory
已使用大容量記憶體，無緩衝區，未啟動任何應用程序
在問我的問題之前已經搜尋了很多次。我有 6GB RAM，4 個目前使用，2 個空閒，緩衝區低
# free -m total used free shared buffers cached Mem: 5982 4031 1951 0 2 16 -/+ buffers/cache: 4011 1971 Swap: 1023 3 1020但是我的 ps 說沒有程序在吃這個 ram…
# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.0 19332 712 ? Ss Jul01 0:03 /sbin/init root 2 0.0 0.0 0 0 ? S Jul01 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S Jul01 0:09 [migration/0] root 4 0.0 0.0 0 0 ? S Jul01 0:05 [ksoftirqd/0] root 5 0.0 0.0 0 0 ? S Jul01 0:00 [migration/0] root 6 0.0 0.0 0 0 ? S Jul01 0:28 [watchdog/0] root 7 0.0 0.0 0 0 ? S Jul01 0:02 [migration/1] root 8 0.0 0.0 0 0 ? S Jul01 0:00 [migration/1] root 9 0.0 0.0 0 0 ? S Jul01 0:03 [ksoftirqd/1] root 10 0.0 0.0 0 0 ? S Jul01 0:15 [watchdog/1] root 11 0.0 0.0 0 0 ? S Jul01 0:57 [events/0] root 12 0.0 0.0 0 0 ? S Jul01 1:07 [events/1] root 13 0.0 0.0 0 0 ? S Jul01 0:00 [cgroup] root 14 0.0 0.0 0 0 ? S Jul01 0:00 [khelper] root 15 0.0 0.0 0 0 ? S Jul01 0:00 [netns] root 16 0.0 0.0 0 0 ? S Jul01 0:00 [async/mgr] root 17 0.0 0.0 0 0 ? S Jul01 0:00 [pm] root 18 0.0 0.0 0 0 ? S Jul01 0:03 [sync_supers] root 19 0.0 0.0 0 0 ? S Jul01 0:05 [bdi-default] root 20 0.0 0.0 0 0 ? S Jul01 0:00 [kintegrityd/0] root 21 0.0 0.0 0 0 ? S Jul01 0:00 [kintegrityd/1] root 22 0.0 0.0 0 0 ? S Jul01 1:33 [kblockd/0] root 23 0.0 0.0 0 0 ? S Jul01 1:25 [kblockd/1] root 24 0.0 0.0 0 0 ? S Jul01 0:00 [kacpid] root 25 0.0 0.0 0 0 ? S Jul01 0:00 [kacpi_notify] root 26 0.0 0.0 0 0 ? S Jul01 0:00 [kacpi_hotplug] root 27 0.0 0.0 0 0 ? S Jul01 0:00 [ata/0] root 28 0.0 0.0 0 0 ? S Jul01 0:00 [ata/1] root 29 0.0 0.0 0 0 ? S Jul01 0:00 [ata_aux] root 30 0.0 0.0 0 0 ? S Jul01 0:00 [ksuspend_usbd] root 31 0.0 0.0 0 0 ? S Jul01 0:00 [khubd] root 32 0.0 0.0 0 0 ? S Jul01 0:00 [kseriod] root 33 0.0 0.0 0 0 ? S Jul01 0:00 [md/0] root 34 0.0 0.0 0 0 ? S Jul01 0:00 [md/1] root 35 0.0 0.0 0 0 ? S Jul01 0:00 [md_misc/0] root 36 0.0 0.0 0 0 ? S Jul01 0:00 [md_misc/1] root 37 0.0 0.0 0 0 ? S Jul01 0:00 [khungtaskd] root 38 0.2 0.0 0 0 ? S Jul01 6:02 [kswapd0] root 39 0.0 0.0 0 0 ? SN Jul01 0:00 [ksmd] root 40 0.0 0.0 0 0 ? SN Jul01 2:43 [khugepaged] root 41 0.0 0.0 0 0 ? S Jul01 0:00 [aio/0] root 42 0.0 0.0 0 0 ? S Jul01 0:00 [aio/1] root 43 0.0 0.0 0 0 ? S Jul01 0:00 [crypto/0] root 44 0.0 0.0 0 0 ? S Jul01 0:00 [crypto/1] root 49 0.0 0.0 0 0 ? S Jul01 0:00 [kthrotld/0] root 50 0.0 0.0 0 0 ? S Jul01 0:00 [kthrotld/1] root 51 0.0 0.0 0 0 ? S Jul01 0:00 [pciehpd] root 53 0.0 0.0 0 0 ? S Jul01 0:00 [kpsmoused] root 54 0.0 0.0 0 0 ? S Jul01 0:00 [usbhid_resumer] root 85 0.0 0.0 0 0 ? S Jul01 0:00 [kstriped] root 234 0.0 0.0 0 0 ? S Jul01 0:00 [scsi_eh_0] root 235 0.0 0.0 0 0 ? S Jul01 0:00 [scsi_eh_1] root 243 0.0 0.0 0 0 ? S Jul01 0:12 [mpt_poll_0] root 244 0.0 0.0 0 0 ? S Jul01 0:00 [mpt/0] root 245 0.0 0.0 0 0 ? S Jul01 0:00 [scsi_eh_2] root 309 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 310 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 330 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-0-8] root 331 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 332 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 677 0.0 0.0 0 0 ? S Jul01 2:24 [vmmemctl] root 794 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 797 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 798 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 801 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 806 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 813 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 819 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 828 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 837 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 843 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 849 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 854 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 858 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 860 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 868 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 915 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 917 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 919 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 926 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 933 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 936 0.0 0.0 0 0 ? S Jul01 0:00 [kdmflush] root 1009 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/sda1-8] root 1010 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1011 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1012 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-21-8] root 1013 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1014 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1015 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-2-8] root 1016 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1017 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1018 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-18-8] root 1019 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1020 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1021 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-22-8] root 1022 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1023 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1024 0.0 0.0 0 0 ? S Jul01 0:45 [jbd2/dm-19-8] root 1025 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1026 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1027 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-17-8] root 1028 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1029 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1030 0.0 0.0 0 0 ? S Jul01 0:08 [jbd2/dm-20-8] root 1031 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1032 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1033 0.0 0.0 0 0 ? S Jul01 0:08 [jbd2/dm-3-8] root 1034 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1035 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1036 0.0 0.0 0 0 ? S Jul01 0:03 [jbd2/dm-4-8] root 1037 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1038 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1039 0.0 0.0 0 0 ? S Jul01 0:02 [jbd2/dm-5-8] root 1040 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1041 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1042 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-6-8] root 1043 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1044 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1045 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-7-8] root 1046 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1047 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1048 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-8-8] root 1049 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1050 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1051 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-9-8] root 1052 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1053 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1054 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-10-8] root 1055 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1056 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1057 0.0 0.0 0 0 ? S Jul01 0:23 [jbd2/dm-11-8] root 1058 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1059 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1060 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-12-8] root 1061 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1062 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1063 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-13-8] root 1064 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1065 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1066 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-14-8] root 1067 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1068 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1069 0.0 0.0 0 0 ? S Jul01 0:01 [jbd2/dm-15-8] root 1070 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1071 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1072 0.0 0.0 0 0 ? S Jul01 0:00 [jbd2/dm-16-8] root 1073 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1074 0.0 0.0 0 0 ? S Jul01 0:00 [ext4-dio-unwrit] root 1134 0.0 0.0 0 0 ? S Jul01 0:00 [kauditd] root 1538 0.0 0.0 248708 800 ? Sl Jul01 0:09 /sbin/rsyslogd -i /var/run/syslogd.pid -c 4 root 1559 0.0 0.0 64032 456 ? Ss Jul01 0:00 /usr/sbin/sshd root 1607 0.0 0.0 117180 412 ? Ss Jul01 0:09 crond root 1879 0.0 0.0 4048 204 tty2 Ss+ Jul01 0:00 /sbin/mingetty /dev/tty2 root 1881 0.0 0.0 4048 204 tty3 Ss+ Jul01 0:00 /sbin/mingetty /dev/tty3 root 1883 0.0 0.0 4048 204 tty4 Ss+ Jul01 0:00 /sbin/mingetty /dev/tty4 root 1886 0.0 0.0 4048 204 tty5 Ss+ Jul01 0:00 /sbin/mingetty /dev/tty5 root 1891 0.0 0.0 4048 204 tty6 Ss+ Jul01 0:00 /sbin/mingetty /dev/tty6 root 7598 0.0 0.0 97732 3816 ? Ss 08:55 0:00 sshd: osadmin [priv] osadmin 7603 0.0 0.0 97872 1956 ? S 08:55 0:00 sshd: osadmin@pts/0 osadmin 7604 0.0 0.0 108324 1824 pts/0 Ss 08:55 0:00 -bash root 8883 0.0 0.0 0 0 ? S 09:50 0:00 [flush-253:20] root 8885 0.0 0.0 149440 1692 pts/0 S 09:51 0:00 su - root root 8887 0.1 0.0 108448 1904 pts/0 S 09:51 0:01 -bash root 8913 0.0 0.0 4048 540 tty1 Ss+ 09:53 0:00 /sbin/mingetty /dev/tty1 root 8971 0.0 0.0 110228 1116 pts/0 R+ 10:03 0:00 ps aux我不知道哪個程序消耗了這個記憶體。伺服器重新啟動解決了幾個小時/天的問題。
我已經測試過：
- 清洗緩衝液：
sync; echo 3 > /proc/sys/vm/drop_caches- 盡可能停止程序
您在 VMware 虛擬機中執行，並且 VM 啟用了記憶體膨脹。因此，管理程序可以動態地從您的 VM 中“帶走”記憶體並允許其他 VM 使用它（因為您的 VM 沒有使用它）。對於 VMware，這顯示為無法解釋的“已用”記憶體。