httpclient will still use 40 threads

I found even the client side will start 40 threads, I am working on a ARM box environment, 40 threads are too much, is this correct behavior?

(gdb) bt
#0 __pthread_create_2_1 (newthread=0x7fffffd8f0, attr=0x0, start_routine=0x4bc448 <(anonymous namespace)::threadpool_impl::thread_start(void*)>,
arg=0x74ccd0 crossplat::threadpool::shared_instance()::s_shared) at pthread_create.c:505
#1 0x00000000004bcdec in crossplat::threadpool::shared_instance() ()
#2 0x00000000004bf148 in web::http::client::details::create_platform_final_pipeline_stage(web::uri&&, web::http::client::http_client_config&&) ()
#3 0x0000000000481b78 in web::http::client::http_client::http_client(web::uri const&, web::http::client::http_client_config const&) ()
#4 0x0000000000481ee0 in web::http::client::http_client::http_client(web::uri const&) ()

[chenyicong]

hi,
actually， you can change number of thread there: threadpool.cpp::threadpool& threadpool::shared_instance()

[mohamedAlaaK]

you need to call this at the start of the program
crossplat::threadpool::initialize_with_threads(num_threads);
and include this header <pplx/threadpool.h>