[Freeswitch-users] CPU Usage Question

[DJB]

We have about 1500 concurrent calls on the server.  And, the CPU usage is shown below:

02:06:46 AM  CPU   %user   %nice    %sys %iowait    %irq   %soft  %steal   %idle    intr/s
02:06:46 AM  all    0.06    0.00    0.03    0.44    0.00    0.00    0.00   99.47   1028.25
02:06:46 AM    0    0.08    0.03    0.03    0.01    0.00    0.01    0.00   99.84   1007.07
02:06:46 AM    1    0.06    0.00    0.02    0.01    0.00    0.00    0.00   99.91      0.00
02:06:46 AM    2    0.07    0.00    0.08    3.49    0.02    0.00    0.00   96.34     21.18
02:06:46 AM    3    0.05    0.00    0.01    0.01    0.00    0.00    0.00   99.94      0.00
02:06:46 AM    4    0.04    0.00    0.02    0.00    0.00    0.00    0.00   99.93      0.00
02:06:46 AM    5    0.05    0.00    0.02    0.00    0.00    0.00    0.00   99.92      0.00
02:06:46 AM    6    0.05    0.00    0.02    0.02    0.00    0.00    0.00   99.91      0.00
02:06:46 AM    7    0.05    0.00    0.02    0.01    0.00    0.00    0.00   99.93      0.00


1) I am wondering whether it is normal that every time when i checked, only CPU 2 always have the highest %iowait (in this case 3.49%).

2) Shoudn't it spread out and balance them to utilize all CPUs evenly?

Thank you.