Windows req/res very slow compared to Linux

[hconcessa]

I'm using gtest to do some performance testing. On Linux I have less than 1 ms, but the same code on Windows has ~30ms.

I think it's a significant difference, but i don't undestand why

Client

// Create client
httplib::Client cli(ADDR, PORT);
ASSERT_TRUE(cli.is_valid());

httplib::Result res;

// Measure the get req/res time
auto start_time = std::chrono::high_resolution_clock::now();
res = cli.get(ROUTE_GET_TEST_TEXT);
auto end_time = std::chrono::high_resolution_clock::now();

auto elapsed_time = std::chrono::duration_cast<std::chrono::microseconds>(end_time - start_time).count();

// Verify response
ASSERT_TRUE(res);
ASSERT_TRUE(res != nullptr);
EXPECT_EQ(httplib::StatusCode::OK_200, res->status);
EXPECT_EQ(httplib::Error::Success, res.error());
EXPECT_EQ(TXT_DEFAULT_RESPONSE, res->body);

// Verify elapsed time		
ASSERT_LE(elapsed_time, TIME_GET_US);

Server handle:

_svr.Get(ROUTE_GET_TEST_TEXT, [&](const httplib::Request& req, httplib::Response& res) {
	res.set_content(TXT_DEFAULT_RESPONSE, "text/plain");
	});

Common:

#define ADDR "127.0.0.1"
#define PORT 8181

#define TXT_DEFAULT_RESPONSE  "Default Response to txt request"

[rpmocchet]

I´ve made some unit tests based on your code and had similar results:

On Linux:

On Windows:

[yhirose]

@hconcessa @rpmocchet sorry for the late reply. I'll take a look at the behavior on my Windows machine when I have time. Thanks!

[J-dev740]

hey can somebody give me some documentation about how to get started as I am running this on my windows after cloning the repo it's showing error since in vscode while doing cmake --build . it shows errors like CreateFile2 is not in global namespace can anybody help I'm new to this