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       Hello Folks!

I need your valuable advise regarding how to fine-tune ATS for highly
loaded server.

The situation:
Test server: (VPS) CPU(s) 4 (Intel(R) Xeon(R) CPU E5-2630 v4 @
2.20GHz), Total RAM: 8 GB, HDD (SSD)
OS: Centos 8
ATSv: 8.1.0

Problem: According to ATS documentation and it's default config files
it can handle 30k concurrent requests. That's great!

//records.config
CONFIG proxy.config.net.connections_throttle INT 30000
CONFIG proxy.config.net.max_connections_in INT 30000
CONFIG proxy.config.net.max_connections_active_in INT 30000



**During the the stress-test: 400-500 concurrent connections against
simple 403 page completely downs ATS. (over WAN)
 
httpress -n 100000000 -c 500 -t 4 'http://mytestsite.domain/'


(?) Question:
Should i play with settings / fine-tune them (if yes, please let me
know them) or better to upgrade HW / or any other advise on this
please.


Played a bit with the following settings (increased/decreased them). No
avail.

proxy.config.net.connections_throttle 
proxy.config.net.max_connections_in
proxy.config.net.max_connections_active_in 


proxy.config.http.keep_alive_no_activity_timeout_in
proxy.config.http.keep_alive_no_activity_timeout_out
proxy.config.http.transaction_no_activity_timeout_in
proxy.config.http.transaction_no_activity_timeout_out



Thanks in advance!





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