On Sun, 2006-10-29 at 19:44 +0100, Robert Olofsson wrote: > Robert Olofsson wrote: > > I could benchmark my proxy with and without transferTo/transferFom > > though, that could be an interesting benchmark and that is easy to > > check. > > A small and benchmark with my proxy, rabbit, gives me interesting > numbers. I run this command: > ab2 -n10000 -c100 -X localhost:9666 \ > http://www.khelekore.org/~robo/arcs.png > > To enable/disable transfer support I change one line: > "if (mayTransfer ()" into "if (false && mayTransfer ()" > > With transfer support: > Requests per second: 1478.70 [#/sec] (mean) > > Without transfer: > Requests per second: 1095.34 [#/sec] (mean) > > This is not a very good benchmark, so I omit the details. > I do think that the speed difference is quite big... > > /robo
Hi Robert This does look interesting. The difference is significant indeed. We should definitely look into possibility of making use of transferTo/transferForm methods in order to increase performance of disk bound operations. These are the numbers comparing the blocking (threaded) I/O with non-blocking based on the latest HttpCore SVN snapshot. The difference is 70%, which is quite a lot. When serving larger content and using chunk-encoding the difference should get closer to 100%. I fully admit the benchmark may not be very representative, but it largely supports my observation about raw performance of NIO based transports. Oleg ======================================================== Blocking I/O ======================================================== [EMAIL PROTECTED]:~$ ab2 -n 200000 -c 50 -k http://localhost:8080/index.html This is ApacheBench, Version 2.0.41-dev <$Revision: 1.141 $> apache-2.0 Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/ Benchmarking localhost (be patient) Server Software: Jakarta-HttpComponents/1.1 Server Hostname: localhost Server Port: 8080 Document Path: /index.html Document Length: 12928 bytes Concurrency Level: 50 Time taken for tests: 54.63056 seconds Complete requests: 200000 Failed requests: 0 Write errors: 0 Keep-Alive requests: 200000 Total transferred: -1676135260 bytes HTML transferred: -1708940672 bytes Requests per second: 3699.38 [#/sec] (mean) Time per request: 13.516 [ms] (mean) Time per request: 0.270 [ms] (mean, across all concurrent requests) Transfer rate: -30276.68 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.0 0 3 Processing: 0 12 24.2 12 2636 Waiting: 0 11 24.0 11 2633 Total: 0 12 24.2 12 2637 ======================================================== Non-blocking I/O ======================================================== [EMAIL PROTECTED]:~$ ab2 -n 200000 -c 50 -k http://localhost:8080/index.html This is ApacheBench, Version 2.0.41-dev <$Revision: 1.141 $> apache-2.0 Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/ Benchmarking localhost (be patient) Server Software: Jakarta-HttpComponents-NIO/1.1 Server Hostname: localhost Server Port: 8080 Document Path: /index.html Document Length: 12928 bytes Concurrency Level: 50 Time taken for tests: 77.89444 seconds Complete requests: 200000 Failed requests: 0 Write errors: 0 Keep-Alive requests: 200000 Total transferred: -1675636336 bytes HTML transferred: -1709238016 bytes Requests per second: 2594.39 [#/sec] (mean) Time per request: 19.272 [ms] (mean) Time per request: 0.385 [ms] (mean, across all concurrent requests) Transfer rate: -21226.81 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.0 0 2 Processing: 1 18 7.8 17 136 Waiting: 0 11 6.3 10 98 Total: 1 18 7.8 17 136 > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
