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Re: using HTTP::Daemon instead of Apache

by tachyon (Chancellor)
on Feb 03, 2004 at 23:56 UTC ( #326359=note: print w/replies, xml ) Need Help??

in reply to using HTTP::Daemon instead of Apache

On Linux and average modperl apache process has a memory footprint of 2-5MB. A trivial Perl process has a memory footprint of 5MB++. A typical functional Perl daemon will consume 10MB without worries and often 20MB. Explain how this is more efficient? Have a look with top as YMMV.



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Re: Re: using HTTP::Daemon instead of Apache
by borisz (Canon) on Feb 04, 2004 at 02:38 UTC
    Ok, here is a little test prog with HTTP::Daemon it has a smaller memfootprint than any of my apache servers and serves about 800 requests/sec for a "hello world" example. Here is the output of ab followed by the script for your tests at home.
    ~/httpd/bin/ab -c 10 -n 500 http://peggy:9876/hello This is ApacheBench, Version 1.3d <$Revision: 1.69 $> apache-1.3 Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustec Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apa Benchmarking peggy (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Finished 500 requests Server Software: libwww-perl-daemon/1.26 Server Hostname: peggy Server Port: 9876 Document Path: /hello Document Length: 12 bytes Concurrency Level: 10 Time taken for tests: 0.621 seconds Complete requests: 500 Failed requests: 0 Broken pipe errors: 0 Total transferred: 73500 bytes HTML transferred: 6000 bytes Requests per second: 805.15 [#/sec] (mean) Time per request: 12.42 [ms] (mean) Time per request: 1.24 [ms] (mean, across all concurrent request +s) Transfer rate: 118.36 [Kbytes/sec] received
    #!/usr/bin/perl use bytes; use HTTP::Daemon; use HTTP::Status; $SIG{PIPE} = 'IGNORE'; my $res = HTTP::Response->new(RC_OK); $res->content("Hello World\n"); $res->content_type('text/plain'); $|++; my $d = HTTP::Daemon->new( LocalPort => 9876, ReuseAddr => 1 ) || die; print "Please contact me at: <URL:", $d->url, ">\n"; for ( 1 .. 20 ) { my $pid = fork; next if $pid; next unless defined $pid; do { flock $d, 2; my $c = $d->accept; flock $d, 8; my $oldfh = select($c); $|++; select($oldfh); while ( my $r = $c->get_request ) { if ( $r->method eq 'GET' ) { #and $r->url->path eq "/hello" ) { $c->send_response($res); } else { $c->send_error(RC_FORBIDDEN); } } $c->close; undef($c); } while (1); exit 0; } while (1) { waitpid( -1, 0 ) }
Re: Re: using HTTP::Daemon instead of Apache
by glwtta (Hermit) on Feb 04, 2004 at 01:36 UTC
    On Linux and average modperl apache process has a memory footprint of 2-5MB

    I am not sure what you mean by "average," but I've found mine will range anywhere between 10MB and 30MB (this is for rather involved apps for bioinformatics).

    I've often seen 12-17MB cited as the expected range for "typical" webapps.

      Sorry I was referring to the C based httpd part not the Perl side. As noted a trivial perl script is 4-5MB and this is addidtive to the base. I have seen the same figures as you.



Re: Re: using HTTP::Daemon instead of Apache
by exussum0 (Vicar) on Feb 04, 2004 at 18:31 UTC
    Maybe less efficient in memory foot print, but possibly more efficient in time for implementation and maintenance. :)

    Play that funky music white boy..

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