SCGI, Euphoria, 9,000 requests a second
I got SCGI working with EuNet. Here are benchmarks of a Hello World program:
---- CGI:
Total transferred: 16620 bytes
HTML transferred: 3800 bytes
Requests per second: 795.23 [#/sec] (mean)
Time per request: 1.258 [ms] (mean)
Time per request: 1.258 [ms] (mean, across all concurrent requests)
Transfer rate: 127.24 [Kbytes/sec] received
---- SCGI:
Total transferred: 159943 bytes
HTML transferred: 37278 bytes
Requests per second: 8986.74 [#/sec] (mean)
Time per request: 0.111 [ms] (mean)
Time per request: 0.111 [ms] (mean, across all concurrent requests)
Transfer rate: 1401.93 [Kbytes/sec] received
----
Now, here's the good part. This Hello World app is the app that your going to
see the least performance increase on! Reason? It's tiny so not much
parsing/startup time taken by Euphoria but more than that, once you get involved
and have database connections, the CGI app has to connect/disconnect to/from the
database every request. Not so with SCGI since it is stateful.
So, when the application loads, you connect to the database, you then start
listening for connections from the web server. When a connection comes in, you
handle it, and then are back at the top of your loop again. No need to
connect/disconnect. Oh, also, you can run many independent copies of your SCGI
program not only on the same machine, but on multiple machines as it utilizes
TCP/IP connections, thus, you can distribute the load, if you are by chance
running a 100 million hit per day website 
So, more on this later, but first, here are the two test programs benchmarked
above:
---- hello.cgi
puts(1, "Content-type: text/html\r\n\r\n")
puts(1, "<html><body>Hello World!</body></html>")
---- hello.scgi
sequence scgi_server
atom sock
scgi_server = scgi:new(3015)
while 1 do
sock = scgi:wait(scgi_server)
scgi:puts(sock, "Content-type: text/html\r\n\r\n")
scgi:puts(sock, "<html><body>Hello World!</body></html>")
end while
--
Jeremy Cowgar
http://jeremy.cowgar.com
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