Benchmark experimentation.

Author: ioquatix

benchmark/server/compiled.c

@@ -3,6 +3,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
 #include <unistd.h>
 #include <string.h>
 
@@ -23,7 +24,11 @@ int main (int argc, char *argv[]) {
 
 	server.sin_family = AF_INET;
 	server.sin_port = htons(port);
-	server.sin_addr.s_addr = htonl(INADDR_ANY);
+	// server.sin_addr.s_addr = htonl(INADDR_ANY);
+	if (inet_pton(AF_INET, "127.0.0.1", &server.sin_addr) <= 0) {
+		perror("inet_pton");
+		exit(EXIT_FAILURE);
+	}
 
 	int opt_val = 1;
 	setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &opt_val, sizeof opt_val);
@@ -45,7 +50,8 @@ int main (int argc, char *argv[]) {
 
 		if (client_fd < 0) on_error("Could not establish new connection\n");
 
-		recv(client_fd, buf, BUFFER_SIZE, 0);
+		// Removing this line entirely gives us the best performance, but obviously we are just blasting out a response without considering the request. Setting it to MSG_DONTWAIT gives us the second best performance, but we are still reading the request but probably not all of it.
+		recv(client_fd, buf, BUFFER_SIZE, MSG_DONTWAIT);
 		send(client_fd, response, response_size, 0);
 
 		close(client_fd);

benchmark/server/config.ru

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+run lambda{|env| [204, {}, []]}

benchmark/server/loop.rb

@@ -5,7 +5,9 @@
 # Copyright, 2021-2025, by Samuel Williams.
 
 require "socket"
+require "time"
 
+# Assuming request per connection:
 RESPONSE = "HTTP/1.1 204 No Content\r\nConnection: close\r\n\r\n"
 
 port = Integer(ARGV.pop || 9090)
@@ -14,9 +16,14 @@
 loop do
 	peer, address = server.accept
 
-	while (peer.recv(1024) rescue nil)
-		peer.send(RESPONSE, 0)
-	end
+	# This is by far the fastest path, clocking in at around 80,000 requests per second in a single thread.
+	peer.recv(1024) rescue nil
+	peer.send(RESPONSE, 0)
+	
+	# This drops us to about 1/4 the performance due to the overhead of blocking operations.
+	# while (peer.recv(1024) rescue nil)
+	# 	peer.send(RESPONSE, 0)
+	# end
 
 	peer.close
 end