memory overload ???



hello,

my httpd crashed, and i checked the top colmmand and it looks like my
system is using a rather big quantity of memory ???

is this normal? what could be the cause ???


Mem: 1027552k av, 1016012k used, 11540k free,


linux se 3.0


thanks



18:29:52 up 19 days, 18:31, 1 user, load average: 0.52, 0.29, 0.27
165 processes: 162 sleeping, 2 running, 1 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait
idle
total 15.1% 0.0% 3.7% 0.1% 0.7% 6.5%
73.4%
Mem: 1027552k av, 1016012k used, 11540k free, 0k shrd,
21172k buff
788436k actv, 147124k in_d, 17876k in_c
Swap: 1052248k av, 120164k used, 932084k free
779576k cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU
COMMAND
18071 apache 15 0 13956 13M 7376 S 4.9 1.3 0:00 0 httpd
18061 apache 15 0 14916 14M 7348 S 2.3 1.4 0:00 0 httpd
18092 apache 15 0 13464 13M 7352 S 1.7 1.3 0:00 0 httpd
18053 apache 15 0 13472 13M 7412 S 1.5 1.3 0:00 0 httpd
18122 mysql 21 0 22456 15M 1524 S 1.3 1.5 0:00 0
mysqld
18037 apache 16 0 13520 13M 7352 S 0.9 1.3 0:00 0 httpd
18008 apache 15 0 0 0 0 Z 0.5 0.0 0:00 0 httpd
<defunct>
18060 apache 15 0 14728 14M 7312 S 0.5 1.4 0:00 0 httpd
18067 apache 15 0 13360 13M 7304 S 0.5 1.3 0:00 0 httpd
18074 mysql 15 0 22456 15M 1524 S 0.5 1.5 0:00 0
mysqld
18077 apache 16 0 12620 12M 7376 S 0.5 1.2 0:00 0 httpd
18110 mysql 16 0 22456 15M 1524 S 0.3 1.5 0:00 0
mysqld
18038 apache 15 0 17472 17M 7412 S 0.1 1.7 0:00 0 httpd
18052 apache 15 0 14592 14M 7344 S 0.1 1.4 0:00 0 httpd
18059 root 15 0 1172 1172 824 R 0.1 0.1 0:00 0 top
18125 mysql 19 0 22456 15M 1524 S 0.1 1.5 0:00 0
mysqld
1 root 15 0 504 476 448 S 0.0 0.0 0:09 0 init
2 root 15 0 0 0 0 SW 0.0 0.0 0:08 0
keventd
3 root 15 0 0 0 0 SW 0.0 0.0 0:01 0 kapmd
4 root 34 19 0 0 0 SWN 0.0 0.0 0:00 0
ksoftirqd/0
7 root 15 0 0 0 0 SW 0.0 0.0 0:01 0
bdflush
5 root 15 0 0 0 0 SW 0.0 0.0 4:50 0
kswapd
6 root 15 0 0 0 0 SW 0.0 0.0 9:17 0
kscand
8 root 15 0 0 0 0 SW 0.0 0.0 0:00 0
kupdated
9 root 25 0 0 0 0 SW 0.0 0.0 0:00 0
mdrecoveryd
13 root 15 0 0 0 0 SW 0.0 0.0 2:20 0
kjournald
298 root 15 0 0 0 0 SW 0.0 0.0 0:00 0
kjournald
616 root 15 0 396 380 340 S 0.0 0.0 0:00 0 mdadm
656 root 15 0 576 552 492 S 0.0 0.0 0:29 0
syslogd
702 root 15 0 1304 440 436 S 0.0 0.0 0:00 0 klogd
751 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 khubd
777 root 15 0 1024 832 712 S 0.0 0.0 0:15 0 sshd
788 root 25 0 800 536 532 S 0.0 0.0 0:00 0 sshd
803 root 15 0 752 688 608 S 0.0 0.0 0:01 0
xinetd
815 ntp 15 0 2592 2592 2204 S 0.0 0.2 0:01 0 ntpd
829 root 25 0 436 180 176 S 0.0 0.0 0:00 0 sshd

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