Servidor con 8gb de ram y no puede con 50 online ayuda porfavor.

[colextey]

iostat
Linux 2.6.18-194.26.1.el5 (colossus921.com) 01/06/2011

avg-cpu: %user %nice %system %iowait %steal %idle
9.47 0.00 1.10 0.02 0.00 89.42

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 5.70 3.18 141.29 6486245 288036974
sda1 0.00 0.00 0.00 1548 6
sda2 5.70 3.18 141.29 6482746 288036968
sda3 0.00 0.00 0.00 1607 0

para top -u apache

35505 apache 16 0 314m 31m 3452 S 15.9 0.4 0:00.48 httpd
35510 apache 16 0 315m 31m 3484 S 7.0 0.4 0:00.50 httpd
35296 apache 15 0 315m 31m 3660 S 0.3 0.4 0:00.86 httpd
35456 apache 15 0 316m 32m 3612 S 0.3 0.4 0:01.17 httpd
34753 apache 18 0 229m 5964 476 S 0.0 0.1 0:00.00 httpd
35316 apache 15 0 315m 32m 3608 S 0.0 0.4 0:01.97 httpd
35338 apache 15 0 315m 31m 3484 S 0.0 0.4 0:01.23 httpd
35348 apache 15 0 314m 31m 3452 S 0.0 0.4 0:00.48 httpd
35369 apache 15 0 296m 10m 1820 S 0.0 0.1 0:00.00 httpd
35388 apache 15 0 315m 32m 3624 S 0.0 0.4 0:00.99 httpd
35404 apache 15 0 296m 10m 1820 S 0.0 0.1 0:00.02 httpd
35405 apache 15 0 314m 31m 3452 S 0.0 0.4 0:00.48 httpd
35409 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35413 apache 15 0 316m 32m 3676 S 0.0 0.4 0:01.47 httpd
35416 apache 15 0 316m 32m 3672 S 0.0 0.4 0:02.90 httpd
35418 apache 15 0 315m 31m 3484 S 0.0 0.4 0:00.44 httpd
35422 apache 15 0 315m 32m 3692 S 0.0 0.4 0:01.52 httpd
35430 apache 15 0 315m 32m 3672 S 0.0 0.4 0:00.63 httpd
35450 apache 15 0 316m 32m 3652 S 0.0 0.4 0:01.51 httpd
35457 apache 15 0 315m 31m 3660 S 0.0 0.4 0:00.57 httpd
35470 apache 15 0 315m 31m 3484 S 0.0 0.4 0:00.95 httpd
35500 apache 15 0 296m 10m 1816 S 0.0 0.1 0:00.00 httpd
35502 apache 15 0 296m 10m 1816 S 0.0 0.1 0:00.00 httpd
35503 apache 15 0 296m 10m 1816 S 0.0 0.1 0:00.00 httpd
35506 apache 15 0 296m 10m 1820 S 0.0 0.1 0:00.00 httpd
35507 apache 15 0 315m 31m 3388 S 0.0 0.4 0:00.50 httpd
35511 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35512 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35514 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35515 apache 15 0 296m 10m 1820 S 0.0 0.1 0:00.00 httpd
35517 apache 15 0 315m 31m 3612 S 0.0 0.4 0:00.61 httpd
35518 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35519 apache 15 0 295m 10m 1816 S 0.0 0.1 0:00.00 httpd
35520 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35530 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35532 apache 15 0 295m 10m 1700 S 0.0 0.1 0:00.00 httpd
35533 apache 15 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35534 apache 15 0 296m 10m 1816 S 0.0 0.1 0:00.00 httpd
35535 apache 17 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35536 apache 18 0 295m 10m 1720 S 0.0 0.1 0:00.00 httpd
35537 apache 18 0 295m 9632 880 S 0.0 0.1 0:00.00 httpd

muchas gracias Datacenter1