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Running Haproxy over openvpn
I am currently using vultr as a haproxy host, with three other VPSes as backends. Haproxy connects to the VPSes via a openvpn tunnel with almost 0 latency
11 packets transmitted, 11 received, 0% packet loss, time 10000ms
rtt min/avg/max/mdev = 0.816/1.342/4.749/1.130 ms
However, using ab to test site response time (This is just a static html page), the response times while going over openvpn are much much greater than connecting without openvpn?
Why is this happening?
---Without Openvpn---
Server Software: cloudflare-nginx
Server Hostname: [redacted]
Server Port: 80
Document Path: /
Document Length: 1156 bytes
Concurrency Level: 200
Time taken for tests: 0.430 seconds
Complete requests: 2000
Failed requests: 0
Total transferred: 3020000 bytes
HTML transferred: 2312000 bytes
Requests per second: 4653.99 [#/sec] (mean)
Time per request: 42.974 [ms] (mean)
Time per request: 0.215 [ms] (mean, across all concurrent requests)
Transfer rate: 6862.81 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 1 4 7.0 2 52
Processing: 9 34 13.1 33 156
Waiting: 8 33 13.0 33 156
Total: 13 38 17.0 35 197
Percentage of the requests served within a certain time (ms)
50% 35
66% 38
75% 40
80% 42
90% 51
95% 62
98% 110
99% 117
100% 197 (longest request)
---With OpenVPN---
Server Software: cloudflare-nginx
Server Hostname: [redacted]
Server Port: 80
Document Path: /
Document Length: 1156 bytes
Concurrency Level: 200
Time taken for tests: 2.707 seconds
Complete requests: 2000
Failed requests: 0
Total transferred: 3020000 bytes
HTML transferred: 2312000 bytes
Requests per second: 738.88 [#/sec] (mean)
Time per request: 270.682 [ms] (mean)
Time per request: 1.353 [ms] (mean, across all concurrent requests)
Transfer rate: 1089.55 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 1 3 6.5 1 46
Processing: 27 185 193.8 141 1373
Waiting: 27 185 193.8 141 1373
Total: 31 188 194.1 144 1374
Percentage of the requests served within a certain time (ms)
50% 144
66% 173
75% 200
80% 231
90% 374
95% 521
98% 1010
99% 1104
100% 1374 (longest request)
