FreeBSD+PHP4.0.0+MySQL+Apache 1.3.12+mod_ssl loader.

My system is PIII-600 + 1G Ram
FreeBSD 3.4
PHP4.0.0
MySQL 2.23.16
Apache 1.3.12+mod_ssl
loader is very hard.
why?

last pid:  3759;  load averages:  0.52,  0.45,  0.45    up 3+04:21:23 
11:40:53
168 processes: 3 running, 165 sleeping
CPU states: 30.4% user,  0.0% nice,  1.9% system,  1.6% interrupt, 66.1%
idle
Mem: 349M Active, 551M Inact, 49M Wired, 38M Cache, 8337K Buf, 17M Free
Swap: 261M Total, 261M Free

  PID USERNAME PRI NICE  SIZE    RES STATE    TIME   WCPU    CPU COMMAND
14012 mysql      2   0 31484K 18240K poll    21:56  0.34%  0.34% mysqld
94904 nobody     2   0  6360K  4380K sbwait   3:09  0.24%  0.24% httpd
87893 nobody     2   0  6112K  4184K sbwait   0:17  0.24%  0.24% httpd
80683 nobody     2   0  6152K  4232K sbwait   0:27  0.20%  0.20% httpd
 2392 nobody     2   0  5836K  3904K select   0:02  0.20%  0.20% httpd
94914 nobody     2   0  6188K  4264K sbwait   3:08  0.15%  0.15% httpd
79318 nobody     2   0  6260K  4340K accept   0:34  0.15%  0.15% httpd
80535 nobody     2   0  6104K  4100K select   0:30  0.15%  0.15% httpd
81753 nobody     2   0  6108K  4172K select   0:29  0.15%  0.15% httpd
84557 nobody     2   0  6160K  4256K sbwait   0:25  0.15%  0.15% httpd
90836 nobody     2   0  6104K  4180K sbwait   0:15  0.15%  0.15% httpd
98005 nobody     2   0  6092K  4156K sbwait   0:05  0.15%  0.15% httpd
 2007 nobody     2   0  5640K  3712K accept   0:01  0.15%  0.15% httpd
 3679 nobody     2   0  5692K  3700K sbwait   0:00  0.17%  0.15% httpd
94907 nobody     2   0  6160K  4204K sbwait   3:12  0.10%  0.10% httpd
94916 nobody     2   0  6252K  4308K accept   3:08  0.10%  0.10% httpd