speedy_backend(1p) [debian man page]

SPEEDY_BACKEND(1p)														SPEEDY_BACKEND(1p)

NAME

       speedy_backend - the backend process for a persistent Perl interpreter

SYNOPSIS

       none ; this program is not meant to be called directly.

DESCRIPTION

       speedy, short for SpeedyCGI, is a way to run perl scripts persistently, which can make them run much more quickly.

       After the script is initially run, instead of exiting, the perl interpreter is kept running inside a backend process, speedy_backend.  Dur-
       ing subsequent runs, this interpreter is used to handle new executions instead of starting a new perl interpreter each time.  A	very  fast
       frontend  program, speedy, written in C, is executed for each request.  This fast frontend then contacts the persistent Perl process, which
       is usually already running, to do the work and return the results.

       Each perl script runs in its own Unix process, so one perl script can't interfere with another.	Command line options can also be  used	to
       deal with programs that have memory leaks or other problems that might keep them from otherwise running persistently.

       The speedy front end connects to the back end process, speedy_backend, via a Unix socket in /tmp.  A queue is kept in a shared file in /tmp
       that holds an entry for each process.  In that queue are the pids of the perl processes waiting for  connections.   The	frontend  pulls  a
       process	out  of this queue, connects to its socket, sends over the environment and argv, and then uses this socket for stdin/stdout to the
       perl process.

FILES

       /tmp/speedy* A unix socket used to connect to the frontend process.

AUTHOR

	       Sam Horrocks
	       http://daemoninc.com
	       sam@daemoninc.com

NOTES

       This manual page was created by Niko Tyni <ntyni@iki.fi> for Debian GNU/Linux, because the original program does not have one. It is  based
       on the original and more complete CGI::SpeedyCGI(3pm) manual page.

SEE ALSO

       perl(1), CGI::SpeedyCGI(3pm), speedy(1)

																SPEEDY_BACKEND(1p)

SPEEDY(1p)																SPEEDY(1p)

NAME

       speedy - a persistent Perl interpreter

SYNOPSIS

       speedy [ <perl options> ] [ -- <speedy options> ] [ <filename> ]

DESCRIPTION

       speedy,	short  for SpeedyCGI, is a way to run perl scripts persistently, which can make them run much more quickly. The most common way to
       make a script run persistently is by changing the interpreter line at the top of the script from:

	      #!/usr/bin/perl

       to

	      #!/usr/bin/speedy

       After the script is initially run, instead of exiting, the perl interpreter is kept running.  During subsequent runs, this  interpreter	is
       used  to  handle  new executions instead of starting a new perl interpreter each time.  A very fast frontend program, written in C, is exe-
       cuted for each request.	This fast frontend then contacts the persistent Perl process, which is usually already running, to do the work and
       return the results.

       Each  perl  script runs in its own Unix process, so one perl script can't interfere with another.  Command line options can also be used to
       deal with programs that have memory leaks or other problems that might keep them from otherwise running persistently.

       Although SpeedyCGI is especially useful for CGI scripts, it can be used to keep any perl  script  running  persistently.  See  CGI::Speedy-
       CGI(3.pm)  for a complete description of SpeedyCGI, including further details on CGI execution and Apache issues. This manual page is based
       on that, but concentrates on running speedy from the command line.

OPTIONS

       The speedy command line is the same as for regular perl, with the exception that SpeedyCGI specific options can be passed in after a "--".

       For example the line:

	      #!/usr/bin/speedy -w -- -t300

       at the top of your script will set the perl option `-w' and will pass the `-t' option to SpeedyCGI, setting the Timeout value to  300  sec-
       onds.

       The options can also be set at run-time from the perl script using the CGI::SpeedyCGI module.

   OPTIONS AVAILABLE
       See CGI::SpeedyCGI(3.pm) for a complete description of the options.

       -p<string>
	      BackendProg : Path to the speedy backend program. (Default: /usr/bin/speedy_backend)

       -B<number>
	      BufsizGet : Use <number> bytes as the maximum size for the buffer that receives data from the perl backend. (Default: 131072)

       -b<number>
	      BufsizPost : Use <number> bytes as the maximum size for the buffer that sends data to the perl backend. (Default: 131072)

       -g<string>
	      Group : Allow a single perl interpreter to run multiple scripts.	See CGI::SpeedyCGI(3.pm) for details. (Default: `none')

       -M<number>
	      MaxBackends : If non-zero, limits the number of speedy backends running for this perl script to <number>. (Default: 0)

       -r<number>
	      MaxRuns : Once the perl interpreter has run <number> times, re-exec the backend process.	Zero indicates no maximum.  This option is
	      useful for processes that tend to consume resources over time. (Default: 500)

       -t<number>
	      Timeout : If no new requests have been received after <number> seconds, exit the persistent perl	interpreter.   Zero  indicates	no
	      timeout. (Default: 3600)

       -T<string>
	      TmpBase  :  Use  the  given  prefix  for	creating temporary files.  This must be a filename prefix, not a directory name. (Default:
	      `/tmp/speedy')

       -v     Version : Print the SpeedyCGI version and exit.

ENVIRONMENT

       Environment variables can also be used to pass in options.  This can only be done before the initial execution, not from within the  script
       itself.	 The  name of the environment variable is always SPEEDY_ followed by the option name in upper-case.  For example to set the speedy
       Timeout option, use the environment variable named SPEEDY_TIMEOUT.

FILES

       /tmp/speedy* A unix socket used to connect to the backend process.  See speedy_backend(1) for more information.

AUTHOR

	       Sam Horrocks
	       http://daemoninc.com
	       sam@daemoninc.com

NOTES

       This manual page was created by Niko Tyni <ntyni@iki.fi> for Debian GNU/Linux, because the original program does not have one. It is  based
       on the original and more complete CGI::SpeedyCGI(3pm) manual page.

BUGS

       There  are   command-line  parsing  incompatibilities  with the real Perl. These aren't very easy to fix, as even the perlrun manpage isn't
       quite accurate on which parameters can be separated (like '-I') and which can't (like '-C').  speedy doesn't allow any of them to be  sepa-
       rated. It considers the first option without a leading dash as the script filename.

SEE ALSO

       perl(1), CGI::SpeedyCGI(3pm), speedy_backend(1)

																	SPEEDY(1p)