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senthilsam's avatar
senthilsam
Level 3
13 years ago

Maxuproc not get updated even after reboot

Hi, Got a update to change the "maxuproc for wt82369 by 1.5 times" , While verifying we make necessary modification on the Global (wt81958). Normally  there is a relation between max_nprocs value...
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  • g_lee's avatar
    g_lee
    13 years ago

    Solaris/OS related problem as Marianne mentioned ie: not Storage Foundation related.

    ... however, the following details from the Solaris Tunable Parameters Reference Manual may assist (Chapter 2 Oracle Solaris Kernel Tunable Parameters - Process Sizing Parameters):

    max_nprocs
    http://download.oracle.com/docs/cd/E19082-01/819-2724/chapter2-8/index.html

    --------------------
    Validation
    Yes. The value is compared to maxpid and set to maxpid if it is larger. On x86 platforms, an additional check is made against a platform-specific value. max_nprocs is set to the smallest value in the triplet (max_nprocs, maxpid, platform value). Both SPARC and x86 platforms use 65,534 as the platform value.
    --------------------

    pidmax
    http://download.oracle.com/docs/cd/E19082-01/819-2724/chapter2-107/index.html

    --------------------
    Description
    Specifies the value of the largest possible process ID. Valid for Solaris 8 and later releases.
    pidmax sets the value for the maxpid variable. Once maxpid is set, pidmax is ignored. maxpid is used elsewhere in the kernel to determine the maximum process ID and for validation checking.
    Any attempts to set maxpid by adding an entry to the /etc/system file have no effect.

    [...]
    Default
    30,000

    [...]
    Implicit
    max_nprocs range checking ensures that max_nprocs is always less than or equal to this value.

    When to Change
    Required to enable support for more than 30,000 processes on a system.
    --------------------

    see also: Solaris 10 - Increasing Number of Processes Per User
    http://blogs.oracle.com/hasham/entry/solaris_10_increasing_number_of

    If this is unclear / still have problems updating the values, you should contact Oracle/Solaris support for further details.

g_lee's avatar
g_lee
Level 6
13 years ago

Solaris/OS related problem as Marianne mentioned ie: not Storage Foundation related.

... however, the following details from the Solaris Tunable Parameters Reference Manual may assist (Chapter 2 Oracle Solaris Kernel Tunable Parameters - Process Sizing Parameters):

max_nprocs
http://download.oracle.com/docs/cd/E19082-01/819-2724/chapter2-8/index.html

--------------------
Validation
Yes. The value is compared to maxpid and set to maxpid if it is larger. On x86 platforms, an additional check is made against a platform-specific value. max_nprocs is set to the smallest value in the triplet (max_nprocs, maxpid, platform value). Both SPARC and x86 platforms use 65,534 as the platform value.
--------------------

pidmax
http://download.oracle.com/docs/cd/E19082-01/819-2724/chapter2-107/index.html

--------------------
Description
Specifies the value of the largest possible process ID. Valid for Solaris 8 and later releases.
pidmax sets the value for the maxpid variable. Once maxpid is set, pidmax is ignored. maxpid is used elsewhere in the kernel to determine the maximum process ID and for validation checking.
Any attempts to set maxpid by adding an entry to the /etc/system file have no effect.

[...]
Default
30,000

[...]
Implicit
max_nprocs range checking ensures that max_nprocs is always less than or equal to this value.

When to Change
Required to enable support for more than 30,000 processes on a system.
--------------------

see also: Solaris 10 - Increasing Number of Processes Per User
http://blogs.oracle.com/hasham/entry/solaris_10_increasing_number_of

If this is unclear / still have problems updating the values, you should contact Oracle/Solaris support for further details.