服务器内核版本占用cpu,cpu瓶颈 top的内核sy占用较高

反应服务器的应用连接较慢，由于应用和数据库在同一台服务器上。先从os上top查看下

[oracle@server115 ~]$ top -c

top - 11:58:28 up 31 days,

1:53, 5 users, load average: 1.55, 1.51, 1.51

Tasks: 247 total, 1 running, 226

sleeping, 1 stopped, 19 zombie

Cpu(s): 0.1%us, 25.2%sy, 0.0%ni, 71.5%id, 3.2%wa,

0.0%hi, 0.0%si, 0.0%st

Mem: 32935076k total, 31446084k

used, 1488992k free, 261712k buffers

Swap: 33547688k total, 48112k

used, 33499576k free, 27773788k cached

PID USER PR

NI VIRT RES

SHR S %CPU %MEM TIME+ COMMAND

8459 root 18

0 6394m 1.2g 13m S 99.9 3.9

2:45.50 /usr/java/j2sdk/bin/java -Dwebapp=cobra.tomcat

-Dfile.encoding=GBK -Xmx6000m -Xms2048m -Djava.endorsed.dirs

8566 oracle 15

0 12736 1196 812 R 0.7

0.0 0:01.03 top -c

3544 root 34

19 0 0

0 S 0.3 0.0 210:59.33 [kipmi0]

5202 oracle 15

0 16.1g 1.1g 1.1g S 0.3 3.4

0:36.75 oraclebenguo (LOCAL=NO)

6662 oracle 15

0 16.1g 183m 179m S 0.3 0.6

2:10.65 oraclebenguo (LOCAL=NO)

1 root 15 0 10344

596 556 S 0.0

0.0 5:09.37 init [5]

关注系统的sy内核运行教程较