CPU100%怪異問題，請前輩幫忙分析

OS:RHEL AS4U2  DB:ORACLE10.2oracle@zfkmes01:/u01/app/oracle/10.2.0/db_1/dbs> sar -P ALL 10 5
Linux 2.6.9-22.ELsmp (zfkmes01)         04/04/200702:41:09 PM       CPU     %user     %nice   %system   %iowait     %idle
02:41:19 PM       all     66.67      0.00     33.33      0.00      0.00
02:41:19 PM         0      0.00      0.00      0.10      0.00     99.90
02:41:19 PM         1      0.00      0.00      0.20      0.00     99.80
02:41:19 PM         2      0.70      0.00      0.10      0.00     99.20
02:41:19 PM         3      0.00      0.00      0.10      0.00     99.9002:41:19 PM       CPU     %user     %nice   %system   %iowait     %idle
02:41:29 PM       all     50.00      0.00     50.00      0.00      0.00
02:41:29 PM         0      0.10      0.00      0.00      0.00     99.90
02:41:29 PM         1      0.00      0.00      0.10      0.00     99.90
02:41:29 PM         2      0.20      0.00      0.30      0.00     99.50
02:41:29 PM         3      0.00      0.00      0.00      0.00    100.0002:41:29 PM       CPU     %user     %nice   %system   %iowait     %idle
02:41:39 PM       all     63.16      0.00     31.58      5.26      0.00
02:41:39 PM         0      0.10      0.00      0.10      0.00     99.80
02:41:39 PM         1      0.20      0.00      0.10      0.00     99.70
02:41:39 PM         2      1.00      0.00      0.20      0.10     98.70
02:41:39 PM         3      0.10      0.00      0.00      0.00     99.9002:41:39 PM       CPU     %user     %nice   %system   %iowait     %idle
02:41:49 PM       all     50.00      0.00     11.11     38.89      0.00
02:41:49 PM         0      0.10      0.00      0.00      0.30     99.60
02:41:49 PM         1      0.00      0.00      0.00      0.00    100.00
02:41:49 PM         2      0.30      0.00      0.20      0.40     99.10
02:41:49 PM         3      0.40      0.00      0.10      0.10     99.4002:41:49 PM       CPU     %user     %nice   %system   %iowait     %idle
02:41:59 PM       all      0.00      0.00    100.00      0.00      0.00
02:41:59 PM         0      0.00      0.00      0.00      0.00    100.00
02:41:59 PM         1      0.00      0.00      0.00      0.00    100.00
02:41:59 PM         2      0.00      0.00      0.00      0.00    100.00
02:41:59 PM         3      0.00      0.00      0.00      0.00    100.00Average:          CPU     %user     %nice   %system   %iowait     %idle
Average:          all     57.14      0.00     28.57     14.29      0.00
Average:            0      0.06      0.00      0.04      0.06     99.84
Average:            1      0.04      0.00      0.08      0.00     99.88
Average:            2      0.44      0.00      0.16      0.10     99.30
Average:            3      0.10      0.00      0.04      0.02     99.84