In order to understand your server, what is its strenght, its OS version, how many cpu, here is a short list of commands that may help
free -m
total used free shared buffers cached
Mem: 3832 3605 226 0 375 1038
-/+ buffers/cache: 2192 1640
Swap: 4031 126 3905
In this case, we can see the server has about 4GB RAM .
top (and then click on 1)
top - 18:26:24 up 169 days, 7:07, 3 users, load average: 0.03, 0.08, 0.08
Tasks: 133 total, 1 running, 130 sleeping, 0 stopped, 2 zombie
Cpu0 : 2.9%us, 0.7%sy, 0.0%ni, 95.9%id, 0.5%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 1.4%us, 0.5%sy, 0.0%ni, 97.5%id, 0.6%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 3924684k total, 3658548k used, 266136k free, 380324k buffers
Swap: 4128760k total, 130752k used, 3998008k free, 1035372k cached
Here, we can see that we have 2 CPU (2 core) and still about 4 GB RAM
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_root-lv_root
20G 5.1G 14G 27% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
/dev/sda1 146M 60M 79M 44% /boot
/dev/mapper/vg_root-lv_home
4.0G 137M 3.7G 4% /home
/dev/mapper/vg_root-lv_liveperson
28G 987M 26G 4% /liveperson
/dev/mapper/vg_root-lv_tmp
4.0G 143M 3.6G 4% /tmp
This command enables to understand the disk partition ... How many storage you have etc ,,,
cat /etc/issue
CentOS release 6.6 (Final)
Kernel \r on an \m
This last command shows you which OS you run on and what is its version.
Here, we use CentOS version 6.6 release.
Tuesday, February 24, 2015
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