linux 显示进程内存使用情况
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5039240/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
linux show process ram usage
提问by user121196
free shows that My centos system used 4/11 Gb RAM, but I can't pinpoint which process has used them. I used top, however it only shows one process(mysqld) used about 1GB. what's going on?
free 显示我的 centos 系统使用了 4/11 Gb RAM，但我无法确定哪个进程使用了它们。我使用了 top，但是它只显示一个进程（mysqld）使用了大约 1GB。这是怎么回事？
# free -g
total used free shared buffers cached
Mem: 11 4 7 0 0 3
-/+ buffers/cache: 0 11
Swap: 1 0 1
sks: 91 total, 1 running, 90 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.1%sy, 0.0%ni, 99.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 12299928k total, 4372572k used, 7927356k free, 77392k buffers Swap: 2097144k total, 0k used, 2097144k free, 3925252k cachedPID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 18 0 10352 704 588 S 0.0 0.0 0:00.82 init
2 root RT -5 0 0 0 S 0.0 0.0 0:00.01 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
4 root RT -5 0 0 0 S 0.0 0.0 0:00.01 migration/1
5 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1
6 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/2
7 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/2
8 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/3
9 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/3
10 root 10 -5 0 0 0 S 0.0 0.0 0:00.09 events/0
11 root 10 -5 0 0 0 S 0.0 0.0 0:00.01 events/1
12 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 events/2
13 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 events/3
14 root 10 -5 0 0 0 S 0.0 0.0 0:00.01 khelper
119 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
126 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/0
127 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/1
128 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/2
129 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/3
130 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
292 root 14 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/0
293 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/1
294 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/2
295 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/3
298 root 14 -5 0 0 0 S 0.0 0.0 0:00.00 khubd
300 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kseriod
390 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khungtaskd
393 root 17 -5 0 0 0 S 0.0 0.0 0:00.00 kswapd0
394 root 17 -5 0 0 0 S 0.0 0.0 0:00.00 aio/0
395 root 18 -5 0 0 0 S 0.0 0.0 0:00.00 aio/1
396 root 18 -5 0 0 0 S 0.0 0.0 0:00.00 aio/2
397 root 17 -5 0 0 0 S 0.0 0.0 0:00.00 aio/3
603 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 kpsmoused
671 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 mpt_poll_0
672 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 mpt/0
673 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_0
679 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 ata/0
680 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 ata/1
681 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 ata/2
682 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 ata/3
683 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 ata_aux
694 root 14 -5 0 0 0 S 0.0 0.0 0:00.00 kstriped
715 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 ksnapd
753 root 10 -5 0 0 0 S 0.0 0.0 0:03.54 kjournald
778 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kauditd
811 root 19 -4 12668 836 400 S 0.0 0.0 0:00.53 udevd
2331 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 kmpathd/0
2332 root 12 -5 0 0 0 S 0.0 0.0 0:00.00 kmpathd/1
2334 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 kmpathd/2
2335 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 kmpathd/3
2336 root 12 -5 0 0 0 S 0.0 0.0 0:00.00 kmpath_handlerd
2358 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 kjournald
2899 root 15 0 0 0 0 S 0.0 0.0 0:00.00 vmmemctl
3028 root 15 0 17540 1292 1052 S 0.0 0.0 0:01.31 vmware-guestd
3374 root 11 -4 28220 816 584 S 0.0 0.0 0:00.02 auditd
3376 root 7 -8 16268 764 620 S 0.0 0.0 0:00.01 audispd
3396 root 15 0 5912 672 544 S 0.0 0.0 0:00.06 syslogd
3399 root 15 0 3808 428 348 S 0.0 0.0 0:00.01 klogd
3413 root 18 0 10764 372 244 S 0.0 0.0 0:00.29 irqbalance
3428 dbus 18 0 32712 1404 856 S 0.0 0.0 0:00.00 dbus-daemon3477 haldaemo 15 0 49164 5152 2224 S 0.0 0.0 0:00.91 hald
3478 root 15 0 21700 1056 872 S 0.0 0.0 0:00.01 hald-runner
3485 haldaemo 19 0 12328 860 744 S 0.0 0.0 0:00.00 hald-addon-acpi
3491 haldaemo 17 0 12328 852 740 S 0.0 0.0 0:00.00 hald-addon-keyb
3500 root 16 0 10232 688 592 S 0.0 0.0 0:02.94 hald-addon-stor
3519 nscd 15 0 199m 2044 1364 S 0.0 0.0 0:00.15 nscd
3542 root 15 0 60748 1196 648 S 0.0 0.0 0:00.00 sshd
3561 ntp 15 0 19832 5528 4424 S 0.0 0.0 0:00.03 ntpd
3576 root 25 0 64168 1320 1056 S 0.0 0.0 0:00.19 mysqld_safe
3601 root 15 0 73812 1052 492 S 0.0 0.0 0:00.01 crond
3714 xfs 18 0 18416 744 480 S 0.0 0.0 0:00.00 xfs
3799 root 18 0 17068 448 304 S 0.0 0.0 0:00.00 atd
3923 root 25 0 58876 316 240 S 0.0 0.0 0:00.00 rhnsd
3942 root 17 0 3796 492 420 S 0.0 0.0 0:00.00 mingetty
3945 root 15 0 3796 488 420 S 0.0 0.0 0:00.00 mingetty
3948 root 18 0 3796 488 416 S 0.0 0.0 0:00.00 mingetty
3950 root 18 0 3796 488 416 S 0.0 0.0 0:00.00 mingetty
3951 root 18 0 3796 484 416 S 0.0 0.0 0:00.00 mingetty
3956 root 18 0 3796 488 416 S 0.0 0.0 0:00.00 mingetty
采纳答案by shellholic
Reading your free, there is 3GB used as disk cache.
阅读您的free，有 3GB 用作磁盘缓存。
回答by Drakosha
- You can sort the processes by used memory by pressing Mwhen in top.
- Linux uses unused memory as a disk cache, it's normal behavior.
- 您可以按M在顶部时按使用的内存对进程进行排序。
- Linux 使用未使用的内存作为磁盘缓存，这是正常行为。
回答by Pavan Yalamanchili
If you want a more visual (yet command line) tool, htop would be a good idea. You can sort them by various options.
如果你想要一个更直观（但命令行）的工具，htop 将是一个好主意。您可以按各种选项对它们进行排序。
回答by dogbane
回答by Underverse
gnome-system-monitorshows a visual representation of processes, % CPU, ID, and memory currently in use.
gnome-system-monitor显示当前使用的进程、CPU 百分比、ID 和内存的可视化表示。
