Solaris10 Post: 302323406

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Operating Systems Solaris Solaris10 Post 302323406 by forsnick on Sunday 7th of June 2009 03:07:14 PM

06-07-2009

Registered User

A quick note regarding the new Solaris 10 resource system.

Just to be clear, if you're modifying /etc/system with SysV IPC parameters like shmsys:shminfo_shmmax, this usage is deprecated. /etc/system modification is only considered if the values are greater than the defaults and the parameters are not obsolete (most are obselete, others removed).

Solaris 10 uses a newer resource control system by project for managing the IPC system. Control is now done more granularly by project or process rather than globally. Check out rctladm, projadd, projmod, and prctl.

That said, you can still find the results of tunable parameter modification using the command sysdef -i.

Also, as with any tunable in /etc/system, you can still query them directly with the debugger, mdb (as root), attached to the running kernel. Example:

Code:

echo "shminfo_shmmax/D" | mdb -k

Using mdb does not require the module name (i.e shmsys of shmsys:shminfo_shmmax), just the key name (shminfo_shmmax).

Have fun storming the castle.

forsnick

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adb

adb(1)								   User Commands							    adb(1)

NAME

       adb - general-purpose debugger

SYNOPSIS

       adb [-kw] [-I dir] [-P prompt] [-V mode] [ object [ core]]

DESCRIPTION

       The  adb utility is an interactive, general-purpose debugger. It can be used to examine files and provides a controlled environment for the
       execution of programs.

       The adb utility is now implemented as a link to the mdb(1) utility in Solaris 9. mdb(1) is a low-level debugging utility that can  be  used
       to  examine  user  processes as well as the live operating system or operating system crash dumps. The new mdb(1) utility provides complete
       backwards compatibility with the existing syntax and features of adb, including support for processing adb macro files. The Solaris Modular
       Debugger  Guide	and  mdb(1)  man  page describes the features of mdb, including its adb compatibility mode. This mode will be activated by
       default when the adb link is executed.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWmdb			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mdb(1), attributes(5)

       Solaris Modular Debugger Guide

SunOS 5.10							    19 Aug 2003 							    adb(1)