System Cpu Between 50-70% and need to find out why

[Paul]

Dear Max

Thanks for the suggestion.

Here are the two outputs of vmstat -i exactly 1 minute apart. Can you 
give me some advice on this please?

Thanks again for your assistance,

Paul

#vmstat -i
interrupt                          total       rate
irq1: atkbd0                           5          0
irq4: sio0                        131475          2
irq14: ata0                           47          0
irq17: em0                      34511122        578
irq18: em1 em2                  50301687        842
irq23: uhci0 uhci+                     1          0
irq26: arcmsr0                   3542212         59
cpu0: timer                    119056370       1994
cpu1: timer                    119045265       1993
cpu2: timer                    119174164       1996
cpu3: timer                    119172877       1996
Total                          564935225       9462

# vmstat -i
interrupt                          total       rate
irq1: atkbd0                           5          0
irq4: sio0                        131610          2
irq14: ata0                           47          0
irq17: em0                      34540241        577
irq18: em1 em2                  50323254        842
irq23: uhci0 uhci+                     1          0
irq26: arcmsr0                   3546230         59
cpu0: timer                    119176497       1994
cpu1: timer                    119165391       1993
cpu2: timer                    119294325       1996
cpu3: timer                    119293038       1996
Total                          565470639       9461

At 07:54 PM 22/04/2007, Max Laier wrote:

>"vmstat -i" could help to rule out interrupt storms.  "top -S" will show
>in-kernel threads as will "systat".  Maybe these help.