I suppose this is from current master. HTTP-In used to be slow, as slow a 1 request/s, but this was fixed in Avination ages ago and has come to 0.9 in the course of the merge.
- Melanie On 14/01/2016 00:42, Jeff Kelley wrote: > Here is a quick & dirty benchmark to measure how fast we can stuff > data from the real world to a script using the LSL HTTP server. Data > may come from some sensor or human interaction device, maybe motion > capture, a Wii Remote, a Kinect ... and would control a simulation in > real-time. > > The benchmark sends requests in the form seq=n, where n is an > incrementing sequence number. Any sequence gap on the receiver side > will indicate a lost message. There is an important assumption : we > are not interested in the reply and don't care reading it. This makes > a HUGE difference. > > Code : > https://github.com/jeff-kelley/opensim-utils/tree/master/lsl_http-benchmark > > Let's begin with the LSL script. It allocates a url then wait for a > request. GET and POST are supported. It checks the received sequence > number against the expected number and complains it they mismatch. > Finally, the script counts and display the number of requests it > receives every second. > > On the client side, I chose Perl and the Net::HTTP class. No doubt > that could be written in Python, Ruby, C#, even PHP. The client opens > a HTTP connection in KeepAlive, then emit requests at a steady rate. > Inside the loop, the HTTP write is timed, and the wait to the next > request is computed. > > The variable $reqSec controls the number of request per second. > Performing the test with different values gives an idea of the > overall performance. > > Now for the unbelievable : > > [09:56] Primitive: Requests/second : 207 > [09:56] Primitive: Requests/second : 198 > [09:56] Primitive: Requests/second : 220 > [09:56] Primitive: Requests/second : 198 > [09:56] Primitive: Requests/second : 214 > [09:56] Primitive: Requests/second : 206 > [09:56] Primitive: Requests/second : 207 > [09:56] Primitive: Requests/second : 213 > [09:56] Primitive: Requests/second : 207 > > Between two machine on a LAN, my figure is 200. Holy cow! This is > more than enough for a smooth simulation. As a bonus, you get a > high-speed, high-jitter event source. > > LSL HTTP server slow ? > > Not ! > > > > -- Jeff > _______________________________________________ > Opensim-users mailing list > [email protected] > http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-users > _______________________________________________ Opensim-users mailing list [email protected] http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-users
