MySql这样正常吗？

77902543

MySQL - 3.23.58-nt
一般有200多个客户端连接数据库，CPU AMD X2 3600+，MySql的CPU使用率在10~30间，是不是有点高了啊？

服务器变量和设置
变量         值
back log         50
basedir         F:\mysql\
binlog cache size         32,768
character set         latin1
character sets         latin1 big5 czech euc_kr gb2312 gbk sjis tis620 ujis dec8 dos german1 hp8 koi8_ru latin2 swe7 usa7 cp1251 danish hebrew win1251 estonia hungarian koi8_ukr win1251ukr greek win1250 croat cp1257 latin5
concurrent insert         ON
connect timeout         5
datadir         F:\mysql\data\
delay key write         ON
delayed insert limit         100
delayed insert timeout         300
delayed queue size         1,000
flush         OFF
flush time         1,800
have bdb         NO
have gemini         NO
have innodb         NO
have isam         YES
have raid         NO
have openssl         NO
init file        
interactive timeout         28,800
join buffer size         131,072
key buffer size         8,388,600
language         F:\mysql\share\english\
large files support         ON
log         OFF
log update         OFF
log bin         OFF
log slave updates         OFF
log long queries         OFF
long query time         10
low priority updates         OFF
lower case table names         1
max allowed packet         1,048,576
max binlog cache size         4,294,967,295
max binlog size         1,073,741,824
max connections         10,240
max connect errors         10
max delayed threads         20
max heap table size         16,777,216
max join size         4,294,967,295
max sort length         1,024
max user connections         0
max tmp tables         32
max write lock count         4,294,967,295
myisam max extra sort file size         256
myisam max sort file size         2,047
myisam recover options         0
myisam sort buffer size         8,388,608
named pipe         OFF
net buffer length         16,384
net read timeout         30
net retry count         10
net write timeout         60
open files limit         0
pid file         F:\mysql\data\qiyue01.pid
port         3,306
protocol version         10
record buffer         131,072
record rnd buffer         131,072
query buffer size         0
safe show database         OFF
server id         0
slave net timeout         3,600
skip locking         ON
skip networking         OFF
skip show database         OFF
slow launch time         2
socket         MySQL
sort buffer         2,097,144
sql mode         0
table cache         64
table type         MYISAM
thread cache size         0
thread stack         65,536
transaction isolation         READ-COMMITTED
timezone         中国标准时间
tmp table size         33,554,432
tmpdir         C:\WINDOWS\TEMP\
version         3.23.58-nt
wait timeout         28,800