high Traffic setup problem, module status don't deliver data

[Aleksandar Lazic]

Am 11-02-2014 12:45, schrieb Valentin V. Bartenev:
> On Tuesday 11 February 2014 12:34:59 Aleksandar Lazic wrote:
> [..]
>> >
>> > You haven't shown your server level configuration.
>> > Do you use deferred accept?
>> 
>> yes
>> 
>> listen       <IP>:80 deferred default_server;
>> 
> 
> Ok.  Two other guesses: you have tcp_syncookies disabled,
> and tcp_abort_on_overflow enabled?
> 
> Please note, that with deferred accept enabled it is very
> easy to have tcp_max_syn_backlog overflowed, especially
> with nginx prior to 1.5.10.

sysctl -a|egrep 'tcp_syncookies|tcp_abort_on_overflow'
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_syncookies = 1

download.none.at # egrep 'tcp_syncookies|tcp_abort_on_overflow'  
sysctl.txt
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_syncookies = 1