linux 下查看系统资源和负载，以及性能监控

刺骨的言语ヽ痛彻心扉 2022-08-18 15:13 140阅读 0赞

1. 查看磁盘 df

[root@tbtravel ~]# df
    文件系统               1K-块        已用     可用 已用% 挂载点
    /dev/mapper/VolGroup00-LogVol00
                          26345340  18485276   6500192  74% /
    /dev/sda1               101086     12354     83513  13% /boot
    tmpfs                  1037512         0   1037512   0% /dev/shm

2. 查看内存 free和vmstat

[root@tbtravel ~]# free
                 total       used       free     shared    buffers     cached
    Mem:       2075024    1500448     574576          0     184772     865532
    -/+ buffers/cache:     450144    1624880
    Swap:      4128760          0    4128760
    [root@tbtravel ~]# vmstat
    procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
     r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
     0  0      0 574576 184772 865532    0    0     0     3    2    4  0  0 100  0  0

3. 查看cpu cat /proc/cpuinfo

[root@tbtravel ~]# cat /proc/cpuinfo
    processor	: 0
    vendor_id	: GenuineIntel
    cpu family	: 6
    model		: 23
    model name	: Intel(R) Xeon(R) CPU           X5450  @ 3.00GHz
    stepping	: 6
    cpu MHz		: 2992.499
    cache size	: 6144 KB
    fdiv_bug	: no
    hlt_bug		: no
    f00f_bug	: no
    coma_bug	: no
    fpu		: yes
    fpu_exception	: yes
    cpuid level	: 10
    wp		: yes
    flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss lm constant_tsc nonstop_tsc pni ssse3 cx16 sse4_1 lahf_lm [8]
    bogomips	: 5984.99
    processor	: 1
    vendor_id	: GenuineIntel
    cpu family	: 6
    model		: 23
    model name	: Intel(R) Xeon(R) CPU           X5450  @ 3.00GHz
    stepping	: 6
    cpu MHz		: 2992.499
    cache size	: 6144 KB
    fdiv_bug	: no
    hlt_bug		: no
    f00f_bug	: no
    coma_bug	: no
    fpu		: yes
    fpu_exception	: yes
    cpuid level	: 10
    wp		: yes
    flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss lm constant_tsc nonstop_tsc pni ssse3 cx16 sse4_1 lahf_lm [8]
    bogomips	: 5984.99

4.查看系统内存 cat /proc/meminfo

[root@tbtravel ~]# cat /proc/meminfo
    MemTotal:      2075024 kB
    MemFree:        573640 kB
    Buffers:        184772 kB
    Cached:         865536 kB
    SwapCached:          0 kB
    Active:        1016096 kB
    Inactive:       424116 kB
    HighTotal:     1179584 kB
    HighFree:         6824 kB
    LowTotal:       895440 kB
    LowFree:        566816 kB
    SwapTotal:     4128760 kB
    SwapFree:      4128760 kB
    Dirty:              40 kB
    Writeback:           0 kB
    AnonPages:      390020 kB
    Mapped:          20680 kB
    Slab:            48668 kB
    PageTables:       1728 kB
    NFS_Unstable:        0 kB
    Bounce:              0 kB
    CommitLimit:   5166272 kB
    Committed_AS:   615140 kB
    VmallocTotal:   114680 kB
    VmallocUsed:      6364 kB
    VmallocChunk:   108096 kB
    HugePages_Total:     0
    HugePages_Free:      0
    HugePages_Rsvd:      0
    Hugepagesize:     4096 kB

5. 查看负载 w和uptime

[root@tbtravel ~]# w
     16:02:40 up 45 days, 21:06,  1 user,  load average: 0.00, 0.00, 0.00
    USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
    root     pts/0    172.16.50.198    15:58    0.00s  0.11s  0.01s w
    [root@tbtravel ~]# uptime
     16:02:51 up 45 days, 21:07,  1 user,  load average: 0.00, 0.00, 0.00

6. 查看系统整体状态 top

[root@tbtravel ~]# top
    top - 16:03:47 up 45 days, 21:08,  1 user,  load average: 0.00, 0.00, 0.00
    Tasks:  93 total,   1 running,  92 sleeping,   0 stopped,   0 zombie
    Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
    Mem:   2075024k total,  1501252k used,   573772k free,   184772k buffers
    Swap:  4128760k total,        0k used,  4128760k free,   865536k cached
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                  
        1 root      15   0  2160  652  564 S  0.0  0.0   0:10.64 init                                                                                                                  
        2 root      RT  -5     0    0    0 S  0.0  0.0   0:06.98 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   0:05.70 migration/1                                                                                                           
        5 root      34  19     0    0    0 S  0.0  0.0   0:00.01 ksoftirqd/1                                                                                                           
        6 root      10  -5     0    0    0 S  0.0  0.0   0:22.88 events/0                                                                                                              
        7 root      10  -5     0    0    0 S  0.0  0.0   0:23.45 events/1                                                                                                              
        8 root      10  -5     0    0    0 S  0.0  0.0   0:00.12 khelper                                                                                                               
        9 root      10  -5     0    0    0 S  0.0  0.0   0:00.00 kthread                                                                                                               
       13 root      10  -5     0    0    0 S  0.0  0.0   0:01.16 kblockd/0                                                                                                             
       14 root      10  -5     0    0    0 S  0.0  0.0   0:01.07 kblockd/1                                                                                                             
       15 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kacpid                                                                                                                
      174 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 cqueue/0                                                                                                              
      175 root      12  -5     0    0    0 S  0.0  0.0   0:00.00 cqueue/1                                                                                                              
      178 root      11  -5     0    0    0 S  0.0  0.0   0:00.00 khubd                                                                                                                 
      180 root      18  -5     0    0    0 S  0.0  0.0   0:00.00 kseriod                                                                                                               
      247 root      22   0     0    0    0 S  0.0  0.0   0:00.87 khungtaskd                                                                                                            
      248 root      18   0     0    0    0 S  0.0  0.0   0:00.00 pdflush                                                                                                               
      249 root      15   0     0    0    0 S  0.0  0.0   0:21.40 pdflush                                                                                                               
      250 root      13  -5     0    0    0 S  0.0  0.0   0:00.00 kswapd0                                                                                                               
      251 root      13  -5     0    0    0 S  0.0  0.0   0:00.00 aio/0                                                                                                                 
      252 root      13  -5     0    0    0 S  0.0  0.0   0:00.00 aio/1                                                                                                                 
      471 root      12  -5     0    0    0 S  0.0  0.0   0:00.00 kpsmoused                                                                                                             
      516 root      10  -5     0    0    0 S  0.0  0.0   0:01.72 mpt_poll_0                                                                                                            
      517 root      17  -5     0    0    0 S  0.0  0.0   0:00.00 mpt/0                                                                                                                 
      518 root      17  -5     0    0    0 S  0.0  0.0   0:00.00 scsi_eh_0                                                                                                             
      522 root      18  -5     0    0    0 S  0.0  0.0   0:00.00 ata/0                                                                                                                 
      523 root      18  -5     0    0    0 S  0.0  0.0   0:00.00 ata/1

7. 性能监视 sar -u

[root@tbtravel ~]# sar -u
    Linux 2.6.18-238.el5 (tbtravel) 	2015年12月25日
    00时00分01秒       CPU     %user     %nice   %system   %iowait    %steal     %idle
    00时10分01秒       all      0.07      0.00      0.10      0.00      0.00     99.82
    00时20分01秒       all      0.09      0.00      0.13      0.00      0.00     99.79
    00时30分01秒       all      0.01      0.00      0.04      0.00      0.00     99.94
    00时40分02秒       all      0.07      0.00      0.10      0.00      0.00     99.83
    00时50分01秒       all      0.07      0.00      0.09      0.00      0.00     99.83
    01时00分01秒       all      0.01      0.04      0.06      0.00      0.00     99.89
    01时10分02秒       all      0.15      0.00      0.08      0.00      0.00     99.77
    01时20分01秒       all      0.07      0.00      0.09      0.00      0.00     99.84
    01时30分01秒       all      0.02      0.00      0.02      0.00      0.00     99.95
    01时40分01秒       all      0.07      0.00      0.08      0.00      0.00     99.85
    01时50分01秒       all      0.07      0.00      0.07      0.00      0.00     99.86
    02时00分01秒       all      0.01      0.04      0.06      0.00      0.00     99.89
    02时10分01秒       all      0.06      0.00      0.07      0.00      0.00     99.86
    02时20分01秒       all      0.07      0.00      0.08      0.00      0.00     99.85

8. 查看文件大小 du

[root@tbtravel ~]# du -m
    1	./.elinks
    1	./.ssh
    1	./.java/.userPrefs/com/bea/plateng/patch/?oracle?weblogic?utils?bsu
    1	./.java/.userPrefs/com/bea/plateng/patch
    1	./.java/.userPrefs/com/bea/plateng
    1	./.java/.userPrefs/com/bea
    1	./.java/.userPrefs/com
    1	./.java/.userPrefs
    1	./.java/fonts/1.7.0_02
    1	./.java/fonts
    1	./.java
    1	./.gconfd
    1	./.gconf/apps/gnome-session/options
    1	./.gconf/apps/gnome-session
    1	./.gconf/apps
    1	./.gconf
    1	./bea
    805	.