top M结果

Tasks: 129 total, 1 running, 128 sleeping, 0 stopped, 0 zombie

Cpu(s): 9.3%us, 1.6%sy, 0.0%ni, 88.7%id, 0.0%wa, 0.0%hi, 0.2%si, 0.2%st

Mem: 8028516k total, 7983756k used, 44760k free, 36444k buffers

Swap: 2097144k total, 3328k used, 2093816k free, 7151420k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND

17052 apache 20 0 318m 23m 8140 S 0.0 0.3 0:03.81 httpd

17184 apache 20 0 318m 22m 7808 S 1.0 0.3 0:01.83 httpd

17198 apache 20 0 317m 22m 7960 S 2.3 0.3 0:00.40 httpd

17183 apache 20 0 317m 22m 7640 S 0.0 0.3 0:01.71 httpd

17124 apache 20 0 316m 21m 7980 S 8.5 0.3 0:03.83 httpd

17127 apache 20 0 317m 21m 7468 S 1.0 0.3 0:02.36 httpd

16966 apache 20 0 315m 20m 8260 S 9.1 0.3 0:08.26 httpd

17193 apache 20 0 316m 20m 7812 S 2.3 0.3 0:00.48 httpd

17083 apache 20 0 316m 20m 7672 S 0.0 0.3 0:02.48 httpd

17049 apache 20 0 315m 20m 7940 S 1.3 0.3 0:04.84 httpd

17176 apache 20 0 315m 20m 7892 S 0.0 0.3 0:01.68 httpd

17199 apache 20 0 315m 20m 7324 S 0.0 0.3 0:00.92 httpd

17156 apache 20 0 315m 19m 7444 S 0.0 0.3 0:02.70 httpd

17186 apache 20 0 315m 19m 7476 S 1.0 0.3 0:01.19 httpd

17118 apache 20 0 314m 19m 8188 S 0.0 0.3 0:03.42 httpd

17188 apache 20 0 315m 19m 7440 S 9.1 0.2 0:01.84 httpd

17076 apache 20 0 314m 19m 7648 S 0.0 0.2 0:03.00 httpd

17195 apache 20 0 308m 19m 5068 S 1.6 0.2 0:00.74 httpd

17196 apache 20 0 308m 19m 5292 S 0.0 0.2 0:00.55 httpd

17177 apache 20 0 313m 17m 7256 S 1.3 0.2 0:00.18 httpd

17197 apache 20 0 305m 16m 4216 S 1.0 0.2 0:01.11 httpd

httpd.conf的配置

StartServers 4

MaxClients 300

MinSpareThreads 25

MaxSpareThreads 75

ThreadsPerChild 25

MaxRequestsPerChild 20000

keepalive是off了的

1个小时前清理了内存，还有7G，一个小时过后看又耗干了，请问什么问题呢？没看出那个进程特别占用内存啊，谢谢