全面了解linux 服务器基本信息[阮胜昌]

物理CPU的个数:

#cat /proc/cpuinfo | grep "physical id"|sort|uniq|wc -l

每个物理CPU中CORE的个数

#cat /proc/cpuinfo | grep "cpu cores" |uniq

查看内存使用情况

[root@node201 ~]# free -m

[root@node201 ~]# free -m

total used free shared buffers cached

Mem: 249 245 4 0 29 103

-/+ buffers/cache: 112 137 //已用内存数112=245-29-103 可用内存数137=4+29+103

Swap: 509 0 509

total(249)=used(245)+free(4)

查看硬盘使用情况

[root@node201 ~]# fdisk -l

Disk /dev/hda: 80.0 GB, 80026361856 bytes

255 heads, 63 sectors/track, 9729 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/hda1 * 1 13 104391 83 Linux

/dev/hda2 14 2563 20482875 83 Linux

/dev/hda3 2564 2628 522112+ 82 Linux swap / Solaris

/dev/hda4 2629 9729 57038782+ 5 Extended

/dev/hda5 2629 5178 20482843+ 83 Linux

/dev/hda6 5179 6453 10241406 83 Linux

/dev/hda7 6454 7728 10241406 83 Linux

/dev/hda8 7729 9729 16073001 83 Linux

[root@node201 ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/hda2 19G 449M 18G 3% /

/dev/hda8 15G 167M 14G 2% /tmp

/dev/hda7 9.5G 2.3G 6.8G 25% /usr

/dev/hda6 9.5G 250M 8.8G 3% /var

/dev/hda5 19G 173M 18G 1% /home

/dev/hda1 99M 11M 83M 12% /boot

tmpfs 125M 0 125M 0% /dev/shm

查看硬盘的IO性能：

iostat 在sysstat套装中