Linux下查询内存使用情况的常用命令
发布时间：2020-12-13 22:36:25 所属栏目：Linux 来源：网络整理
导读：1、cat /proc/meminfo $ cat /proc/ meminfoMemTotal: 16430636 kBMemFree: 14376492 kBMemAvailable: 15298732 kBBuffers: 161976 kBCached: 1022440 kBSwapCached: 0 kBActive: 1369780 kBInactive: 438696 kBActive(anon): 624376 kBInactive(anon): 4944
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1、cat /proc/meminfo $ cat /proc/meminfo MemTotal: 16430636 kB MemFree: 14376492 kB MemAvailable: 15298732 kB Buffers: 161976 kB Cached: 1022440 kB SwapCached: 0 kB Active: 1369780 kB Inactive: 438696 kB Active(anon): 624376 kB Inactive(anon): 49444 kB Active(file): 745404 kB Inactive(file): 389252 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 60 kB Writeback: 0 kB AnonPages: 624068 kB Mapped: 88140 kB Shmem: 49752 kB Slab: 108076 kB SReclaimable: 82864 kB SUnreclaim: 25212 kB KernelStack: 4464 kB PageTables: 10480 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 8215316 kB Committed_AS: 1811204 kB VmallocTotal: 34359738367 kB VmallocUsed: 34780 kB VmallocChunk: 34359695100 kB HardwareCorrupted: 0 kB AnonHugePages: 182272 kB CmaTotal: 0 kB CmaFree: 0 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 169832 kB DirectMap2M: 8218624 kB DirectMap1G: 10485760 kB 2、free命令 $ free -h total used free shared buff/cache available Mem: 15G 740M 13G 48M 1.2G 14G Swap: 0B 0B 0B 3、top命令 top - 17:46:52 up 24 days,7:55,1 user,load average: 0.00,0.01,0.05 Tasks: 150 total,1 running,149 sleeping,0 stopped,0 zombie %Cpu(s): 0.0 us,0.0 sy,0.0 ni,99.9 id,0.0 wa,0.0 hi,0.0 si,0.0 st KiB Mem : 16430636 total,14375400 free,761676 used,1293560 buff/cache KiB Swap: 0 total,0 free,0 used. 15298748 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1278 root 39 19 1009380 12864 4296 S 0.3 0.1 110:22.18 bcm-si 6891 bls 20 0 2892024 159516 18192 S 0.3 1.0 55:29.09 java 1 root 20 0 191392 4292 2576 S 0.0 0.0 0:41.43 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.12 kthreadd 3 root 20 0 0 0 0 S 0.0 0.0 0:01.45 ksoftirqd/0 5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H 7 root rt 0 0 0 0 S 0.0 0.0 0:00.60 migration/0 8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh 9 root 20 0 0 0 0 S 0.0 0.0 4:42.73 rcu_sched 10 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 lru-add-drain 11 root rt 0 0 0 0 S 0.0 0.0 0:11.94 watchdog/0 12 root rt 0 0 0 0 S 0.0 0.0 0:10.31 watchdog/1 13 root rt 0 0 0 0 S 0.0 0.0 0:00.27 migration/1 14 root 20 0 0 0 0 S 0.0 0.0 0:03.51 ksoftirqd/1 16 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/1:0H 17 root rt 0 0 0 0 S 0.0 0.0 0:08.49 watchdog/2 18 root rt 0 0 0 0 S 0.0 0.0 0:00.29 migration/2 19 root 20 0 0 0 0 S 0.0 0.0 0:01.62 ksoftirqd/2 21 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/2:0H 22 root rt 0 0 0 0 S 0.0 0.0 0:09.91 watchdog/3 23 root rt 0 0 0 0 S 0.0 0.0 0:00.53 migration/3 24 root 20 0 0 0 0 S 0.0 0.0 0:02.67 ksoftirqd/3 26 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/3:0H 27 root rt 0 0 0 0 S 0.0 0.0 0:11.63 watchdog/4 28 root rt 0 0 0 0 S 0.0 0.0 0:00.31 migration/4 29 root 20 0 0 0 0 S 0.0 0.0 0:01.81 ksoftirqd/4 31 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/4:0H 32 root rt 0 0 0 0 S 0.0 0.0 0:09.95 watchdog/5 33 root rt 0 0 0 0 S 0.0 0.0 0:00.51 migration/5 ? ? 4、vmstat命令 $ vmstat procs -----------memory------------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 1 0 0 14376368 161976 1130836 0 0 0 3 2 2 0 0 100 0 0 $ vmstat -s 16430636 K total memory 762152 K used memory 1371068 K active memory 438692 K inactive memory 14375160 K free memory 161976 K buffer memory 1131348 K swap cache 0 K total swap 0 K used swap 0 K free swap 589175 non-nice user cpu ticks 1981533 nice user cpu ticks 444738 system cpu ticks 1676693728 idle cpu ticks 147296 IO-wait cpu ticks 0 IRQ cpu ticks 7999 softirq cpu ticks 330028 stolen cpu ticks 594719 pages paged in 42000160 pages paged out 0 pages swapped in 0 pages swapped out 421548879 interrupts 599573120 CPU context switches 1561081893 boot time 120054 forks ? 5、ps命令 $ ps aux --sort -rss USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1231 0.9 2.2 1368496 375824 ? SNl Jun21 346:39 ./bcm-agent bls 6891 0.1 0.9 2892024 159516 ? Sl Jun21 55:29 /opt/bls/lib/jre/bin/java -Duser.language=en_us -Xmx500m -XX:+UseParallelGC -XX:+UseParallelOldGC - root 389 0.0 0.2 96376 46212 ? Ss Jun21 0:14 /usr/lib/systemd/systemd-journald root 1245 0.0 0.2 1200080 40200 ? Sl Jun21 19:48 /opt/hosteye/bin/hosteye --is_child_mode=true --is_console_mode=false --start_mode=0 root 1199 0.0 0.1 288132 28188 ? Ssl Jun21 2:06 /usr/sbin/rsyslogd -n root 898 0.0 0.1 573840 17152 ? Ssl Jun21 5:08 /usr/bin/python -Es /usr/sbin/tuned -l -P 待完善。。。 ? ? 参考： https://www.cnblogs.com/zhuiluoyu/p/6154898.html https://www.cnblogs.com/xd502djj/archive/2011/03/01/1968041.html https://www.cnblogs.com/jiffies/articles/2106456.html （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |