Hai to all,

               This is the snapshot of my mysql server dedicated.i wondering
why the 4 cpu is not utilize and the rest cpu always sleep..  ?


Cpu0  :  3.3%us,  0.3%sy,  0.0%ni, 93.7%id,  2.3%wa,  0.0%hi,  0.3%si,
0.0%st
Cpu1  :  0.0%us,  0.3%sy,  0.0%ni, 99.7%id,  0.0%wa,  0.0%hi,  0.0%si,
0.0%st
Cpu2  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
0.0%st
Cpu3  :  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:   8174224k total,  2500868k used,  5673356k free,    87040k buffers
Swap:  2031608k total,  1044640k used,   986968k free,  1305844k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 2173 mysql     15   0 6167m 966m 5720 S    4 12.1   0:39.03 mysqld
 2667 root      15   0 12584 1052  804 R    0  0.0   0:00.12 top
    1 root      15   0 10324  348  320 S    0  0.0   0:01.50 init
    2 root      RT  -5     0    0    0 S    0  0.0   0:00.00 migration/0
    3 root      34  19     0    0    0 S    0  0.0   0:00.00 ksoftirqd/0
    4 root      RT  -5     0    0    0 S    0  0.0   0:00.00 watchdog/0
    5 root      RT  -5     0    0    0 S    0  0.0   0:00.00 migration/1
    6 root      34  19     0    0    0 S    0  0.0   0:00.00 ksoftirqd/1
    7 root      RT  -5     0    0    0 S    0  0.0   0:00.00 watchdog/1
    8 root      RT  -5     0    0    0 S    0  0.0   0:00.00 migration/2
    9 root      34  19     0    0    0 S    0  0.0   0:00.00 ksoftirqd/2
   10 root      RT  -5     0    0    0 S    0  0.0   0:00.00 watchdog/2
   11 root      RT  -5     0    0    0 S    0  0.0   0:00.00 migration/3
   12 root      34  19     0    0    0 S    0  0.0   0:00.00 ksoftirqd/3
   13 root      RT  -5     0    0    0 S    0  0.0   0:00.00 watchdog/3
   14 root      10  -5     0    0    0 S    0  0.0   0:00.01 events/0
   15 root      10  -5     0    0    0 S    0  0.0   0:00.00 events/1
   16 root      10  -5     0    0    0 S    0  0.0   0:00.00 events/2
   17 root      10  -5     0    0    0 S    0  0.0   0:00.00 events/3
   18 root      10  -5     0    0    0 S    0  0.0   0:00.00 khelper
   89 root      11  -5     0    0    0 S    0  0.0   0:00.00 kthread
   96 root      10  -5     0    0    0 S    0  0.0   0:00.87 kblockd/0
   97 root      10  -5     0    0    0 S    0  0.0   0:00.00 kblockd
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