硬件配置：
CPU
4-2.8G
RAM:1G
HARDDISK:2*120G IDE
软件系统：
PHP Version 4.3.10
Apache/2.0.53
mysql/4.0.24
freebsd 5.4
问题：服务器CPU利用率及load averages都很低，processes比较多，连接服务器上的站点很慢很慢。查看进程发现有大量的HTTPD进程，查看网络连接发现有大量的来自MSN的robot的访问连接。对于这种情况，应该如何处理或如何优化?
TOP内容：
last pid: 28987; load averages: 0.00, 0.02, 0.04 up 4+03:19:27 03:33:27
357 processes: 1 running, 356 sleeping
Mem: 668M Active, 71M Inact, 202M Wired, 53M Cache, 111M Buf, 1656K Free
Swap: 2000M Total, 4292K Used, 1996M Free
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
22825 mysql 20 0 440M 196M kserel 46:21 0.00% 0.00% mysqld
226 root 96 0 7552K 3252K select 0:15 0.00% 0.00% httpd
27903 admin 4 0 11924K 8048K sbwait 0:14 0.00% 0.00% httpd
28009 admin 4 0 11404K 7428K sbwait 0:12 0.00% 0.00% httpd
28020 admin 4 0 11972K 8096K sbwait 0:12 0.00% 0.00% httpd
28059 admin 4 0 11060K 7120K sbwait 0:12 0.00% 0.00% httpd
28067 admin 4 0 11984K 8048K sbwait 0:10 0.00% 0.00% httpd
28066 admin 4 0 10796K 6884K sbwait 0:10 0.00% 0.00% httpd
28130 admin 4 0 11984K 8064K sbwait 0:09 0.00% 0.00% httpd
28199 admin 4 0 12088K 8208K sbwait 0:09 0.00% 0.00% httpd
28315 admin 4 0 12004K 8060K sbwait 0:08 0.00% 0.00% httpd
28329 admin 4 0 10864K 6948K sbwait 0:07 0.00% 0.00% httpd
28325 admin 4 0 10864K 6912K sbwait 0:07 0.00% 0.00% httpd
28324 admin 4 0 10700K 6728K sbwait 0:06 0.00% 0.00% httpd
28371 admin 4 0 10908K 6952K sbwait 0:06 0.00% 0.00% httpd
245 root 96 0 5596K 2960K select 0:06 0.00% 0.00% perl
28407 admin 4 0 10720K 6940K sbwait 0:05 0.00% 0.00% httpd
28444 admin 4 0 11992K 8052K sbwait 0:04 0.00% 0.00% httpd
需要其他信息请回复。
请各位大侠帮忙分析，不胜感激~~~````````
