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.
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