[Web] 为什么会有这么多httpd进程？

[weixin_38078374]

我用的rh9
top以后：
Mem: 124484k av, 123044k used, 1440k free, 0k shrd, 6740k buff
92216k actv, 892k in_d, 1960k in_c
Swap: 257032k av, 23868k used, 233164k free 33996k cached

3431 apache 15 0 12404 12M 5584 S 1.6 9.9 0:05 0 httpd
3428 apache 15 0 12316 12M 5564 S 1.4 9.8 0:04 0 httpd
3429 apache 15 0 12264 11M 5440 S 1.4 9.6 0:04 0 httpd
3430 apache 16 0 10972 10M 5600 S 1.4 8.8 0:05 0 httpd
3432 apache 15 0 11208 10M 5368 S 1.4 8.9 0:05 0 httpd
3433 apache 15 0 12080 10M 5356 S 1.4 8.9 0:05 0 httpd
3434 apache 15 0 12536 12M 5736 S 1.4 10.0 0:05 0 httpd
3783 apache 15 0 11236 10M 5656 S 1.2 9.0 0:02 0 httpd
3343 mysql 20 0 2996 2800 1912 S 0.8 2.2 0:03 0 mysqld
3780 apache 15 0 12304 12M 5544 S 0.2 9.8 0:02 0 httpd
1 root 15 0 108 84 56 S 0.0 0.0 0:04 0 init
2 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 keventd
3 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kapmd
4 root 34 19 0 0 0 SWN 0.0 0.0 0:00 0 ksoftirqd_CPU
9 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 bdflush
5 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kswapd
直接导致内存不够~~~