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Special Forums News, Links, Events and Announcements Software Releases - RSS News pc 0.3-2008-04-02 (Default branch)
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Old 04-03-2008
pc 0.3-2008-04-02 (Default branch)
pc is a small daemon to manage user applications. It repriorizes user processes dynamically depending on their CPU usage, system load, and input parameters. It can kill off memory or cycle-grabbing applications as well as limit the time an application is allowed to run. It has found use in system environments where many instances of potentially buggy end-user programs share the resources of a single machine. License: GNU General Public License v3 Changes:
Much more extensive error checking on input values. More attention to the assignment of 'reasonable' default operating parameters for the program when configuration errors are found. Better logging of input errors and assigned defaults. The man pages and administrative guide are updated to reflect changes.Image

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LEARN ABOUT HPUX

maxuprc

maxuprc(5)							File Formats Manual							maxuprc(5)

NAME

       maxuprc - limits the maximum number of concurrent user processes per user

VALUES

   Failsafe
   Default
   Allowed values
   Recommended value
DESCRIPTION

       is a dynamic tunable that limits the maximum number of processes per user.  Only root can have more than the number of processes limited by

   Who is Expected to Change This Tunable?
       System administrators can change the value of depending on the usage of the system.

   Restrictions on Changing
       None.  This tunable is dynamic.

   When Should the Value of This Tunable Be Raised?
       The  value  of should be changed if users require more processes than what they are currently allowed by If fails with an error value of it
       could be an indication that was reached by that particular user.  However, that is not the only reason that could cause	to  fail  with	an
       errno value of may be returned if system tunable has been reached or memory on the system has been exhausted.

   What Are the Side Effects of Raising the Value?
       Raising the value of allows a single user to consume a greater percentage of the system resources.

   When Should the Value of This Tunable Be Lowered?
       The value of should be lowered when individual users are monopolizing system resources by running too many concurrent processes.

   What Are the Side Effects of Lowering the Value?
       Applications  that  depend  on a large number of processes may behave differently or fail.  Existing processes will continue to run but new
       process creations which would result in the user exceeding will fail.

   What Other Tunable Values Should Be Changed at the Same Time?
       When tuning you should keep in mind the value of

WARNINGS

       All HP-UX kernel tunable parameters are release specific.  This parameter may be removed or have its meaning changed in future releases	of
       HP-UX.

       Installation  of  optional  kernel  software, from HP or other vendors, may cause changes to tunable parameter values.  After installation,
       some tunable parameters may no longer be at the default or recommended values.  For information about the effects of installation  on  tun-
       able  values,  consult  the documentation for the kernel software being installed.  For information about optional kernel software that was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

SEE ALSO

       nproc(5).

							     Tunable Kernel Parameters							maxuprc(5)