most http requests are in waiting status

when i see netstat -anp or see the apache status from whm , i realize that maybe 80% of the requests are waiting , and the rest are established and some of them are keepalive

i have the keepalive on
keepalive timeout 15

Min spare 5
Max spare 15
maxkeep alive requests 100 (and i tried 150 after that)
max clients 250

what can be the reason ???

 

 

 

 

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