How To Check Cpu And Memory Usage And Performance In Linux

This Page Contains information about How To Check Cpu And Memory Usage And Performance In Linux By Wallpaperama in category Linux Systems with 1 Replies. [3040], Last Updated: Tue Feb 07, 2023

Wallpaperama

Wed Dec 03, 2008

1 Comments

558 Visits

i have a wallpaper website also, and lately i've been getting more and more visitors, and one of my biggest concerns right now is that the server i have it may not be enough to handle the load of all the stuff i have. so one of the things i wanted to know was how i can check the status of the physical memory being used by my server and the cpu usage. but since i only have access to my server through ssh, i need to know what command i can use to display and show me the stats about how much memory is being used by the server and how much cpu is being use. well, you're in luck if you found my post, i will show you what command you need to send on the linux shell to show you how much memory your computer is using.. in my case, its a pentium Duo CPU with 2G of memory..

so loging to your shell as root and send this commaned:

top

YOu will see a list of all the programs that are using the memory and the cup, it will refresh about every 3 seconds or so and it will display real time how much you are using. this is helpful when you know you've reached your limit and you need to upgrade.

wallpaperama

Wed Dec 03, 2008

this is how mine looks like:

Tasks: 176 total,   1 running, 174 sleeping,   0 stopped,   1 zombie
Cpu(s):  3.0%us,  0.8%sy,  0.0%ni, 96.0%id,  0.2%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   2073216k total,  2020156k used,    53060k free,   109868k buffers
Swap:  2096472k total,       32k used,  2096440k free,  1511200k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 2103 mysql     20   0  141m  25m 4316 S    5  1.3   8005:25 mysqld
30643 apache    20   0 44396  17m 3384 S    1  0.8   0:00.02 httpd
29991 root      20   0  2392 1060  796 R    0  0.1   0:01.21 top
30632 apache    20   0 43988  16m 2980 S    0  0.8   0:00.01 httpd
30646 apache    20   0     0    0    0 Z    0  0.0   0:00.01 httpd 
    1 root      20   0  2140  644  556 S    0  0.0   0:11.88 init
    2 root      15  -5     0    0    0 S    0  0.0   0:00.00 kthreadd
    3 root      RT  -5     0    0    0 S    0  0.0   0:00.42 migration/0
    4 root      15  -5     0    0    0 S    0  0.0   0:00.29 ksoftirqd/0
    5 root      RT  -5     0    0    0 S    0  0.0   0:00.00 watchdog/0
    6 root      RT  -5     0    0    0 S    0  0.0   0:00.42 migration/1
    7 root      15  -5     0    0    0 S    0  0.0   0:01.42 ksoftirqd/1
    8 root      RT  -5     0    0    0 S    0  0.0   0:00.00 watchdog/1
    9 root      15  -5     0    0    0 S    0  0.0   0:06.82 events/0
   10 root      15  -5     0    0    0 S    0  0.0   0:06.38 events/1
   11 root      15  -5     0    0    0 S    0  0.0   0:00.00 khelper
   52 root      15  -5     0    0    0 S    0  0.0   0:05.01 kblockd/0
   53 root      15  -5     0    0    0 S    0  0.0   0:03.06 kblockd/1
   54 root      15  -5     0    0    0 S    0  0.0   0:00.00 kacpid
   55 root      15  -5     0    0    0 S    0  0.0   0:00.00 kacpi_notify
  150 root      15  -5     0    0    0 S    0  0.0   0:00.00 cqueue/0
  151 root      15  -5     0    0    0 S    0  0.0   0:00.00 cqueue/1
  152 root      15  -5     0    0    0 S    0  0.0   0:00.00 ksuspend_usbd
  155 root      15  -5     0    0    0 S    0  0.0   0:00.00 khubd
  157 root      15  -5     0    0    0 S    0  0.0   0:00.00 kseriod
  186 root      15  -5     0    0    0 S    0  0.0   0:10.47 kswapd0
  238 root      15  -5     0    0    0 S    0  0.0   0:00.00 aio/0
  239 root      15  -5     0    0    0 S    0  0.0   0:00.00 aio/1
  373 root      15  -5     0    0    0 S    0  0.0   0:00.00 kpsmoused
  408 root      15  -5     0    0    0 S    0  0.0   0:00.00 ata/0
  409 root      15  -5     0    0    0 S    0  0.0   0:00.00 ata/1
  410 root      15  -5     0    0    0 S    0  0.0   0:00.00 ata_aux
  414 root      15  -5     0    0    0 S    0  0.0   0:00.00 scsi_eh_0
  415 root      15  -5     0    0    0 S    0  0.0   0:00.00 scsi_eh_1
  416 root      15  -5     0    0    0 S    0  0.0   0:00.00 scsi_eh_2
  417 root      15  -5     0    0    0 S    0  0.0   0:00.00 scsi_eh_3
  421 root      15  -5     0    0    0 S    0  0.0   0:00.00 scsi_eh_4
  422 root      20   0     0    0    0 S    0  0.0   0:00.00 hpt_wt
  438 root      15  -5     0    0    0 S    0  0.0   1:57.17 kjournald
  465 root      15  -5     0    0    0 S    0  0.0   0:00.00 kauditd
  502 root      16  -4  2264  616  384 S    0  0.0   0:00.07 udevd

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