So here are some numbers using ab with keep alive option:
HTTP :8080 98634.66 [#/sec] 117224.98 [Kbytes/sec]
HTTP :8888 67073.40 [#/sec] 79715.16 [Kbytes/sec]
HTTPS:8843 52365.51 [#/sec] 62235.18 [Kbytes/sec]
So the headline here is that even with keep-alive direct SSL sucks, but via haproxy/unixsockets it is about half the throughput of a direct connection... but more importantly (in and apples with apples kind of way) it is 78% of the throughput of the plain text proxied test. So as proxies can have other benefits (eg load balancing), SSL is only just over a 20% cost... if you have a proxy anyway.
Full numbers below (still lacking rigour and only over localhost... but I'm trying to stir up interest here so that others might benchmark with some real world apps/load)
gregw@Tile440: ~
[2035] ab -n 500000 -c 100 -k
http://localhost:8080/This is ApacheBench, Version 2.3 <$Revision: 1604373 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd,
http://www.zeustech.net/Licensed to The Apache Software Foundation,
http://www.apache.org/Benchmarking localhost (be patient)
Completed 50000 requests
Completed 100000 requests
Completed 150000 requests
Completed 200000 requests
Completed 250000 requests
Completed 300000 requests
Completed 350000 requests
Completed 400000 requests
Completed 450000 requests
Completed 500000 requests
Finished 500000 requests
Server Software: Jetty(9.3.z-SNAPSHOT)
Server Hostname: localhost
Server Port: 8080
Document Path: /
Document Length: 1045 bytes
Concurrency Level: 100
Time taken for tests: 5.069 seconds
Complete requests: 500000
Failed requests: 0
Keep-Alive requests: 500000
Total transferred: 608500000 bytes
HTML transferred: 522500000 bytes
Requests per second: 98634.66 [#/sec] (mean)
Time per request: 1.014 [ms] (mean)
Time per request: 0.010 [ms] (mean, across all concurrent requests)
Transfer rate: 117224.98 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 4
Processing: 0 1 1.3 1 88
Waiting: 0 1 1.3 1 88
Total: 0 1 1.3 1 88
Percentage of the requests served within a certain time (ms)
50% 1
66% 1
75% 1
80% 1
90% 2
95% 2
98% 3
99% 5
100% 88 (longest request)
gregw@Tile440: ~
[2036] ab -n 500000 -c 100 -k
http://localhost:8888/This is ApacheBench, Version 2.3 <$Revision: 1604373 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd,
http://www.zeustech.net/Licensed to The Apache Software Foundation,
http://www.apache.org/Benchmarking localhost (be patient)
Completed 50000 requests
Completed 100000 requests
Completed 150000 requests
Completed 200000 requests
Completed 250000 requests
Completed 300000 requests
Completed 350000 requests
Completed 400000 requests
Completed 450000 requests
Completed 500000 requests
Finished 500000 requests
Server Software: Jetty(9.3.z-SNAPSHOT)
Server Hostname: localhost
Server Port: 8888
Document Path: /
Document Length: 1045 bytes
Concurrency Level: 100
Time taken for tests: 7.455 seconds
Complete requests: 500000
Failed requests: 0
Keep-Alive requests: 500000
Total transferred: 608500000 bytes
HTML transferred: 522500000 bytes
Requests per second: 67073.40 [#/sec] (mean)
Time per request: 1.491 [ms] (mean)
Time per request: 0.015 [ms] (mean, across all concurrent requests)
Transfer rate: 79715.16 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 3
Processing: 0 1 0.8 1 29
Waiting: 0 1 0.8 1 29
Total: 0 1 0.8 1 29
Percentage of the requests served within a certain time (ms)
50% 1
66% 2
75% 2
80% 2
90% 2
95% 3
98% 3
99% 4
100% 29 (longest request)
gregw@Tile440: ~
[2037] ab -n 500000 -c 100 -k
https://localhost:8443/This is ApacheBench, Version 2.3 <$Revision: 1604373 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd,
http://www.zeustech.net/Licensed to The Apache Software Foundation,
http://www.apache.org/Benchmarking localhost (be patient)
Completed 50000 requests
Completed 100000 requests
Completed 150000 requests
Completed 200000 requests
Completed 250000 requests
Completed 300000 requests
Completed 350000 requests
Completed 400000 requests
Completed 450000 requests
Completed 500000 requests
Finished 500000 requests
Server Software: Jetty(9.3.z-SNAPSHOT)
Server Hostname: localhost
Server Port: 8443
SSL/TLS Protocol: TLSv1.2,ECDHE-RSA-AES128-SHA256,2048,128
Document Path: /
Document Length: 1045 bytes
Concurrency Level: 100
Time taken for tests: 21.166 seconds
Complete requests: 500000
Failed requests: 0
Keep-Alive requests: 500000
Total transferred: 608500000 bytes
HTML transferred: 522500000 bytes
Requests per second: 23622.46 [#/sec] (mean)
Time per request: 4.233 [ms] (mean)
Time per request: 0.042 [ms] (mean, across all concurrent requests)
Transfer rate: 28074.74 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 27.5 0 2215
Processing: 0 4 6.4 3 727
Waiting: 0 4 6.4 3 727
Total: 0 4 30.8 3 2219
Percentage of the requests served within a certain time (ms)
50% 3
66% 4
75% 4
80% 5
90% 7
95% 8
98% 11
99% 13
100% 2219 (longest request)
gregw@Tile440: ~
[2038] ab -n 500000 -c 100 -k
https://localhost:8843/This is ApacheBench, Version 2.3 <$Revision: 1604373 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd,
http://www.zeustech.net/Licensed to The Apache Software Foundation,
http://www.apache.org/Benchmarking localhost (be patient)
Completed 50000 requests
Completed 100000 requests
Completed 150000 requests
Completed 200000 requests
Completed 250000 requests
Completed 300000 requests
Completed 350000 requests
Completed 400000 requests
Completed 450000 requests
Completed 500000 requests
Finished 500000 requests
Server Software: Jetty(9.3.z-SNAPSHOT)
Server Hostname: localhost
Server Port: 8843
SSL/TLS Protocol: TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256
Document Path: /
Document Length: 1045 bytes
Concurrency Level: 100
Time taken for tests: 9.548 seconds
Complete requests: 500000
Failed requests: 0
Keep-Alive requests: 500000
Total transferred: 608500000 bytes
HTML transferred: 522500000 bytes
Requests per second: 52365.51 [#/sec] (mean)
Time per request: 1.910 [ms] (mean)
Time per request: 0.019 [ms] (mean, across all concurrent requests)
Transfer rate: 62235.18 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 2.4 0 182
Processing: 0 2 0.8 2 76
Waiting: 0 2 0.8 2 76
Total: 0 2 2.8 2 196
Percentage of the requests served within a certain time (ms)
50% 2
66% 2
75% 2
80% 2
90% 3
95% 3
98% 4
99% 4
100% 196 (longest request)
