linux内存free低,linux上的内存使用情况与`free`不匹配 -凯发k8官方网
我有一台
linux机器在软件方面没有运行太多,但是在某种程度上使用了1.7gb的2gb已安装内存.当我自由奔跑时,我得到：
total used free shared buffers cached
mem: 2072616 1979972 92644 0 164876 129740
-/ buffers/cache: 1685356 387260
swap: 498004 1632 496372
当我运行顶部时,我获得与第一行免费相同的数字(由于内存使用现已自行修复,因此无法重现).
但是,当我运行ps aux时,所有进程的内存使用量仅为295.9mb,这与使用免费报告的1.7gb内存相差甚远.
为什么会出现这种差异？
编辑：
这是请求的额外信息,但我认为它不会有多大帮助,因为我现在显示〜使用免费使用360mb,使用ps aux总计使用~300mb.不确定为什么问题会自行纠正.
自由
total used free shared buffers cached
mem: 2072616 668484 1404132 0 185868 139196
-/ buffers/cache: 343420 1729196
swap: 498004 1632 496372
cat / proc / meminfo
memtotal: 2072616 kb
memfree: 1404628 kb
buffers: 185792 kb
cached: 139196 kb
swapcached: 544 kb
active: 411448 kb
inactive: 210208 kb
active(anon): 218636 kb
inactive(anon): 78216 kb
active(file): 192812 kb
inactive(file): 131992 kb
unevictable: 0 kb
mlocked: 0 kb
hightotal: 1187784 kb
highfree: 761112 kb
lowtotal: 884832 kb
lowfree: 643516 kb
swaptotal: 498004 kb
swapfree: 496372 kb
dirty: 60 kb
writeback: 0 kb
anonpages: 296168 kb
mapped: 14536 kb
shmem: 184 kb
slab: 39088 kb
sreclaimable: 31720 kb
sunreclaim: 7368 kb
kernelstack: 888 kb
pagetables: 1184 kb
nfs_unstable: 0 kb
bounce: 0 kb
writebacktmp: 0 kb
commitlimit: 1534312 kb
committed_as: 407808 kb
vmalloctotal: 122880 kb
vmallocused: 5132 kb
vmallocchunk: 112808 kb
directmap4k: 12280 kb
directmap4m: 897024 kb
ps aux
user pid %cpu %mem vsz rss tty stat start time command
root 1 0.0 0.0 1620 548 ? ss may18 0:04 init [3]
root 2 0.0 0.0 0 0 ? s may18 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? s may18 0:00 [migration/0]
root 4 0.0 0.0 0 0 ? s may18 0:00 [ksoftirqd/0]
root 5 0.0 0.0 0 0 ? s may18 0:00 [watchdog/0]
root 6 0.0 0.0 0 0 ? s may18 0:00 [migration/1]
root 7 0.0 0.0 0 0 ? s may18 0:00 [ksoftirqd/1]
root 8 0.0 0.0 0 0 ? s may18 0:00 [watchdog/1]
root 9 0.0 0.0 0 0 ? s may18 0:00 [events/0]
root 10 0.0 0.0 0 0 ? s may18 0:00 [events/1]
root 11 0.0 0.0 0 0 ? s may18 0:00 [khelper]
root 17 0.0 0.0 0 0 ? s may18 0:00 [async/mgr]
root 166 0.0 0.0 0 0 ? s may18 0:00 [sync_supers]
root 168 0.0 0.0 0 0 ? s may18 0:00 [bdi-default]
root 170 0.0 0.0 0 0 ? s may18 0:03 [kblockd/0]
root 171 0.0 0.0 0 0 ? s may18 0:03 [kblockd/1]
root 174 0.0 0.0 0 0 ? s may18 0:00 [kacpid]
root 175 0.0 0.0 0 0 ? s may18 0:00 [kacpi_notify]
root 176 0.0 0.0 0 0 ? s may18 0:00 [kacpi_hotplug]
root 332 0.0 0.0 0 0 ? s may18 0:00 [ata/0]
root 333 0.0 0.0 0 0 ? s may18 0:00 [ata/1]
root 334 0.0 0.0 0 0 ? s may18 0:00 [ata_aux]
root 336 0.0 0.0 0 0 ? s may18 0:00 [kseriod]
root 371 0.0 0.0 0 0 ? s may18 0:00 [rpciod/0]
root 372 0.0 0.0 0 0 ? s may18 0:00 [rpciod/1]
root 406 0.0 0.0 0 0 ? s may18 0:00 [khungtaskd]
root 407 0.0 0.0 0 0 ? s may18 0:20 [kswapd0]
root 408 0.0 0.0 0 0 ? s may18 0:00 [aio/0]
root 409 0.0 0.0 0 0 ? s may18 0:00 [aio/1]
root 410 0.0 0.0 0 0 ? s may18 0:00 [nfsiod]
root 411 0.0 0.0 0 0 ? s< may18 0:00 [kslowd000]
root 412 0.0 0.0 0 0 ? s< may18 0:00 [kslowd001]
root 414 0.0 0.0 0 0 ? s may18 0:00 [crypto/0]
root 415 0.0 0.0 0 0 ? s may18 0:00 [crypto/1]
root 1172 0.0 0.0 0 0 ? s may18 0:00 [scsi_tgtd/0]
root 1173 0.0 0.0 0 0 ? s may18 0:00 [scsi_tgtd/1]
root 1177 0.0 0.0 0 0 ? s may18 0:00 [scsi_eh_0]
root 1215 0.0 0.0 0 0 ? s may18 0:00 [kpsmoused]
root 1228 0.0 0.0 0 0 ? s may18 0:05 [jbd2/sda3-8]
root 1229 0.0 0.0 0 0 ? s may18 0:00 [ext4-dio-unwr]
root 1230 0.0 0.0 0 0 ? s may18 0:00 [ext4-dio-unwr]
root 1322 0.0 0.0 2044 632 ? s
root 1650 0.0 0.0 0 0 ? s may18 0:25 [vmmemctl]
root 1678 0.0 0.0 0 0 ? s may18 0:00 [kjournald]
root 1680 0.0 0.0 0 0 ? s may18 0:00 [ksuspend_usbd]
root 1681 0.0 0.0 0 0 ? s may18 0:00 [khubd]
root 1709 0.0 0.0 0 0 ? s may18 0:02 [flush-8:0]
root 3157 0.0 0.0 5976 1576 ? ss may18 0:10 /usr/bin/vmtool
root 3222 0.0 0.0 5984 276 ? s may18 0:00 supervising sys
root 3223 0.0 0.0 6220 1452 ? ss may18 0:00 /usr/sbin/syslo
root 3224 0.0 0.0 4428 1240 ? s may18 0:00 /bin/sh /etc/sy
clamav 3808 0.1 11.4 256396 237488 ? snsl may18 2:44 /usr/sbin/clamd
clamav 3818 0.0 0.0 12368 1684 ? sns may18 0:03 /usr/bin/freshc
root 3984 0.0 0.0 4048 1164 ? ss may18 0:00 /usr/sbin/ntpd
root 4106 0.0 0.0 14228 1868 ? ss may18 0:00 /usr/sbin/smbd
root 4115 0.0 0.0 8360 1128 ? ss may18 0:00 /usr/sbin/nmbd
root 4119 0.0 0.0 14228 852 ? s may18 0:00 /usr/sbin/smbd
root 4176 0.0 0.0 8488 1832 ? ss may18 0:00 sendmail: accep
smmsp 4179 0.0 0.0 8212 1372 ? ss may18 0:00 sendmail: queue
root 4235 0.0 0.1 9824 2700 ? s may18 0:06 /usr/sbin/snmpd
root 4295 0.0 0.0 5684 1060 ? ss may18 0:00 /usr/sbin/sshd
root 4415 0.0 0.0 2044 512 ? s< may18 0:00 /sbin/udevd --d
uptimed 4456 0.0 0.0 1620 440 ? ss may18 0:00 /usr/sbin/uptim
root 4515 0.0 0.0 3456 716 ? ss may18 0:00 /usr/sbin/cron
root 4609 0.0 0.0 1672 668 tty1 ss may18 0:00 /sbin/agetty 38
root 4610 0.0 0.0 1672 668 tty2 ss may18 0:00 /sbin/agetty 38
root 4611 0.0 0.0 1676 672 tty3 ss may18 0:00 /sbin/agetty 38
root 4612 0.0 0.0 1672 668 tty4 ss may18 0:00 /sbin/agetty 38
root 4613 0.0 0.0 1668 664 tty5 ss may18 0:00 /sbin/agetty 38
root 4614 0.0 0.0 1668 664 tty6 ss may18 0:00 /sbin/agetty 38
root 8761 0.0 0.1 8740 3000 ? ss 02:02 0:02 sshd: root@nott
root 8763 0.0 0.0 5356 1632 ? ss 02:02 0:02 /usr/lib/misc/s
root 8774 0.0 0.1 8744 2988 ? ss 02:02 0:00 sshd: root@nott
root 8776 0.0 0.0 5368 1632 ? ss 02:02 0:00 /usr/lib/misc/s
root 8787 0.0 0.1 8736 2944 ? ss 02:02 0:00 sshd: root@nott
root 8789 0.0 0.0 5232 1520 ? ss 02:02 0:00 /usr/lib/misc/s
root 8812 0.0 0.1 8740 3000 ? ss 02:04 0:12 sshd: root@nott
root 8814 0.0 0.0 5416 1676 ? ss 02:04 0:13 /usr/lib/misc/s
root 8825 0.0 0.1 8744 2992 ? ss 02:04 0:00 sshd: root@nott
root 8827 0.0 0.0 5352 1628 ? ss 02:04 0:00 /usr/lib/misc/s
root 8838 0.0 0.1 8880 3080 ? ss 02:04 0:00 sshd: root@nott
root 8840 0.0 0.0 5436 1768 ? ss 02:04 0:00 /usr/lib/misc/s
root 15237 0.0 0.1 8744 2856 ? ss 16:00 0:00 sshd: hudson-sl
1000 15239 0.0 0.0 8884 1844 ? s 16:00 0:00 sshd: hudson-sl
1000 15240 0.0 0.0 2908 1084 ? ss 16:00 0:00 bash -c wget --
1000 15242 0.2 2.1 671620 44412 ? sl 16:00 0:08 /etc/java-confi
root 15575 0.0 0.1 8768 3008 ? ss 16:25 0:00 sshd: root@pts/
root 15577 0.0 0.0 4304 1012 pts/0 ss 16:25 0:00 /usr/bin/screen
root 15620 0.0 0.1 5428 2100 ? ss 16:25 0:00 /usr/bin/screen
root 15621 0.0 0.1 5304 2576 pts/1 ss 16:25 0:00 -/bin/bash
smmsp 15875 0.0 0.1 8492 3476 ? s 16:54 0:00 sendmail: o4jls
root 15888 0.0 0.1 8768 3004 ? ss 16:58 0:00 sshd: root@pts/
root 15890 0.0 0.0 4316 1028 pts/2 ss 16:59 0:00 /usr/bin/screen
root 15933 0.0 0.1 5432 2096 ? ss 16:59 0:00 /usr/bin/screen
root 15934 0.1 0.1 5304 2604 pts/3 ss 16:59 0:00 -/bin/bash
root 16021 0.0 0.0 3856 1060 pts/3 r 17:00 0:00 ps aux
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