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History

Andy Green c9731c5f17 type comparisons: fixes This is a huge patch that should be a global NOP. For unix type platforms it enables -Wconversion to issue warnings (-> error) for all automatic casts that seem less than ideal but are normally concealed by the toolchain. This is things like passing an int to a size_t argument. Once enabled, I went through all args on my default build (which build most things) and tried to make the removed default cast explicit. With that approach it neither change nor bloat the code, since it compiles to whatever it was doing before, just with the casts made explicit... in a few cases I changed some length args from int to size_t but largely left the causes alone. From now on, new code that is relying on less than ideal casting will complain and nudge me to improve it by warnings.		2021-01-05 10:56:38 +00:00
..
mount-origin	lws logo: update minimal examples	2020-03-06 04:46:39 +00:00
CMakeLists.txt	cmake: latest cmake shows dep warnings for scripts < 2.8.12	2020-12-06 19:44:54 +00:00
localhost-100y.cert	travis: h2spec integration	2018-04-26 15:27:02 +08:00
localhost-100y.key	travis: h2spec integration	2018-04-26 15:27:02 +08:00
minimal-http-server-smp.c	type comparisons: fixes	2021-01-05 10:56:38 +00:00
README.md	docs: force markdown to render correct path	2020-09-16 13:10:23 +01:00

README.md

lws minimal http server with multithreaded service

Lws supports multithreaded service... build lws with -DLWS_MAP_SMP=<max number of threads>, the default is 1. If nonzero, some extra pthreads locking is built into lws and it supports multiple independent service threads.

When an incoming connection is accepted, it is bound to the pt with the lowest current wsi count, to keep the load on the threads balanced. Only the pt the wsi is bound to can service the thread, so although there can be as many wsi being serviced simultaneously as there are service threads, a wsi can only be service by the pt it is bound to.

The effectiveness of the scalability depends on the load. Here is an example of roughly what can be expected

build

 $ cmake . && make

usage

 $ ./lws-minimal-http-server-smp
[2018/03/07 17:44:20:2409] USER: LWS minimal http server SMP | visit http://localhost:7681
[2018/03/07 17:44:20:2410] NOTICE: Creating Vhost 'default' port 7681, 1 protocols, IPv6 on
[2018/03/07 17:44:20:2411] NOTICE:   Service threads: 10

Visit http://localhost:7681 and use ab or other testing tools