Wrk2Optimization.txt

Wrk2 client

Provider:	Hetzner
Type server:	Virtual server single core
OS:		Clean Ubuntu-1604-xenial-64-minimal with custom /etc/sysctl.conf *
Wrk2:		wrk 4.0.0 [epoll] https://github.com/giltene/wrk2
RAM: 		1 GB
Hard Drive: 	SSD
Connection: 	1 Gbit/s NIC

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StreamingBandit server

Provider:	Hetzner
Type server:	Virtual server quad core
OS:		Ubuntu-1604-xenial-64-minimal with custom /etc/sysctl.conf *
Python		Python 3.5.2, Tornado 4.5.2
RAM: 		16 GB
Hard Drive: 	SSD
Connection: 	1 Gbit/s NIC

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Tested client-server throughput with iperf3 https://github.com/esnet/iperf

[  5]   0.00-10.00  sec   878 MBytes   736 Mbits/sec  104             sender
[  5]   0.00-10.03  sec   874 MBytes   731 Mbits/sec                  receiver

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* /etc/sysctl.conf

vm.swappiness=1					# turn off swapping
net.core.somaxconn=65535			# up the number of connections per port
vm.max_map_count=262144				#(default) http://www.redhat.com/magazine/001nov04/features/v
fs.file-max=518144				# http://www.tldp.org/LDP/solrhe/Securing-Optimizing-Linux-RH
net.ipv4.ip_local_port_range = 15000 65000	# optimize port range
net.ipv4.tcp_tw_recycle = 1			# optimize port recycle
net.ipv4.tcp_tw_reuse = 1			# optimize port reuse