Apache not processing new requests without reaching max_client value.With many idle children

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http://serverfault.com – we are facing a problem,that new requests are not processed even if apache hasn't reached its max_client setting. Max_client is set to 800 max_spare server is 36 min_spare server is 35 Timeout 300 keepalive on keepalive timeout 10 Max_keep_alive_requests 100 Why is apache not processing new requests and sending timeouts evenif it hasnt reached its max_client value. An strace revealed that around 80+ apache children is in idle state that is 0.0000 seconds in strace ouput. Why this many children is in idle state and still generating new children,but stillnot processi (HowTos)