lgrp_init man page on SmartOS

Man page or keyword search:  
man Server   16655 pages
apropos Keyword Search (all sections)
Output format
SmartOS logo
[printable version]


       lgrp_init - initialize lgroup interface

       cc [ flag... ] file... -llgrp [ library... ]
       #include <sys/lgrp_user.h>

       lgrp_cookie_t lgrp_init(lgrp_view_t view);

       The  lgrp_init()	 function initializes the lgroup interface and takes a
       snapshot of the lgroup hierarchy with the given	view.	If  the	 given
       view is LGRP_VIEW_CALLER, the snapshot contains only the resources that
       are available to the caller (for example,  with	respect	 to  processor
       sets).	When  the  view is LGRP_VIEW_OS, the snapshot contains what is
       available to the operating system.

       Given the view, lgrp_init() returns a cookie representing this snapshot
       of the lgroup hierarchy. This cookie should be used with other routines
       in  the	lgroup	 interface   needing   the   lgroup   hierarchy.   The
       lgrp_fini(3LGRP)	 function  should be called with the cookie when it is
       no longer needed.

       The lgroup hiearchy represents the latency  topology  of	 the  machine.
       The  hierarchy  is  simplified to be a tree and can be used to find the
       nearest resources.

       The lgroup hiearchy consists of a root lgroup,  which  is  the  maximum
       bounding	 locality group of the system, contains all the CPU and memory
       resources of the machine, and may contain  other locality  groups  that
       contain	CPUs  and  memory  within a smaller locality. The leaf lgroups
       contain resources within the smallest latency.

       The resources of a given lgroup come directly from the lgroup itself or
       from  leaf  lgroups  contained within the lgroup. Leaf lgroups directly
       contain their own resources and do not encapsulate any other lgroups.

       The lgroup hierarchy can be used to find the nearest resources. From  a
       given  lgroup, the closest resources can be found in the lgroup itself.
       After that, the next nearest resources  can  be	found  in  its	parent
       lgroup,	and  so	 on  until  the	 root  lgroup is reached where all the
       resources of the machine are located.

       Upon successful completion, lgrp_init() returns a cookie. Otherwise  it
       returns LGRP_COOKIE_NONE and sets errno to indicate the error.

       The lgrp_init() function will fail if:

		 The view is not valid.

		 There	was  not enough memory to allocate the snapshot of the
		 lgroup hierarchy.

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

       │Interface Stability │ Evolving	      │
       │MT-Level	    │ MT-Safe	      │

       lgrp_children(3LGRP),	lgrp_cookie_stale(3LGRP),    lgrp_cpus(3LGRP),
       lgrp_fini(3LGRP),  lgrp_mem_size(3LGRP),	 lgrp_nlgrps(3LGRP), lgrp_par‐
       ents(3LGRP), lgrp_resources(3LGRP), lgrp_root(3LGRP), lgrp_view(3LGRP),
       liblgrp(3LIB), attributes(5)

				 Jan 26, 2005		      LGRP_INIT(3LGRP)

List of man pages available for SmartOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net