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Manual Reference Pages  -  STARMAN (3)

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NAME

Starman - High-performance preforking PSGI/Plack web server

CONTENTS

SYNOPSIS



  # Run app.psgi with the default settings
  > starman

  # run with Server::Starter
  > start_server --port 127.0.0.1:80 -- starman --workers 32 myapp.psgi

  # UNIX domain sockets
  > starman --listen /tmp/starman.sock



Read more options and configurations by running ‘perldoc starman‘ (lower-case s).

DESCRIPTION

Starman is a PSGI perl web server that has unique features such as:
High Performance Uses the fast XS/C HTTP header parser
Preforking Spawns workers preforked like most high performance UNIX servers do. Starman also reaps dead children and automatically restarts the worker pool.
Signals Supports HUP for graceful worker restarts, and TTIN/TTOU to dynamically increase or decrease the number of worker processes, as well as QUIT to gracefully shutdown the worker processes.
Superdaemon aware Supports Server::Starter for hot deploy and graceful restarts.
Multiple interfaces and UNIX Domain Socket support Able to listen on multiple interfaces including UNIX sockets.
Small memory footprint Preloading the applications with --preload-app command line option enables copy-on-write friendly memory management. Also, the minimum memory usage Starman requires for the master process is 7MB and children (workers) is less than 3.0MB.
PSGI compatible Can run any PSGI applications and frameworks
HTTP/1.1 support Supports chunked requests and responses, keep-alive and pipeline requests.
UNIX only This server does not support Win32.

PERFORMANCE

Here’s a simple benchmark using Hello.psgi.



  -- server: Starman (workers=10)
  Requests per second:    6849.16 [#/sec] (mean)
  -- server: Twiggy
  Requests per second:    3911.78 [#/sec] (mean)
  -- server: AnyEvent::HTTPD
  Requests per second:    2738.49 [#/sec] (mean)
  -- server: HTTP::Server::PSGI
  Requests per second:    2218.16 [#/sec] (mean)
  -- server: HTTP::Server::PSGI (workers=10)
  Requests per second:    2792.99 [#/sec] (mean)
  -- server: HTTP::Server::Simple
  Requests per second:    1435.50 [#/sec] (mean)
  -- server: Corona
  Requests per second:    2332.00 [#/sec] (mean)
  -- server: POE
  Requests per second:    503.59 [#/sec] (mean)



This benchmark was processed with ab -c 10 -t 1 -k on MacBook Pro 13" late 2009 model on Mac OS X 10.6.2 with perl 5.10.0. YMMV.

NOTES

Because Starman runs as a preforking model, it is not recommended to serve the requests directly from the internet, especially when slow requesting clients are taken into consideration. It is suggested to put Starman workers behind the frontend servers such as nginx, and use HTTP proxy with TCP or UNIX sockets.

AUTHOR

Tatsuhiko Miyagawa <miyagawa@bulknews.net>

Andy Grundman wrote Catalyst::Engine::HTTP::Prefork, which this module is heavily based on.

Kazuho Oku wrote Net::Server::SS::PreFork that makes it easy to add Server::Starter support to this software.

COPYRIGHT

Tatsuhiko Miyagawa, 2010-

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

Plack Catalyst::Engine::HTTP::Prefork Net::Server::PreFork
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perl v5.20.3 STARMAN (3) 2015-06-03

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