Otto Moerbeek wrote:

quoted text
>> Where are the OS bottleneck that I can may be improve here?

>

> Loks at the memory usage. 300 httpd procces could take up 3000M

> easily, especially with stuff like php. In that case, the machine

> starts swapping and your hit the roof. As a general rul, do not allow

> more httpd procces than our machine can handle without swapping. Also,

> a long KeepAliveTmeout can works against you, by holding slots. 

Thanks Otto,
I am still doing tests and tweak, but as far as swap, I checked that and

same for keep alive in httpd.conf and I even changed it in:
net.inet.tcp.keepinittime=10

net.inet.tcp.keepidle=30

net.inet.tcp.keepintvl=30
For testing only. I am not saying the value above are any good, but I am

testing multiple things and reading a lot on sysctl and what each one does.
KeepAliveTmeout is at 5 seconds.
No swapping is happening, even with 1000 httpd running.
load averages: 123.63, 39.74, 63.3285                      01:26:47

1064 processes:1063 idle, 1 on processor

CPU states:  0.8% user,  0.0% nice,  3.1% system,  0.8% interrupt, 95.4%

idle

Memory: Real: 648M/1293M act/tot  Free: 711M  Swap: 0K/4096M used/tot