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Portable Linux Processor Affinity 1.1 (Default branch)

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Special Forums News, Links, Events and Announcements Software Releases - RSS News Portable Linux Processor Affinity 1.1 (Default branch)
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Old 02-22-2008
Portable Linux Processor Affinity 1.1 (Default branch)
PLPA is an attempt to solve the problem ofmultiple API's for processor affinity withinLinux. Specifically, the functionssched_setaffinity() and sched_getaffinity() havenumbers and types of parameters depending on yourLinux vendor and/or version of GLibc. This isquite problematic for applications attempting touse processor affinity in Linux for compile-time,link-time, and run-time reasons. The PLPA providesa single processor affinity API that developerscan write to in order to get both consistentbehavior and binary compatibility across differentLinux installations (assuming that you have anexecutable that is otherwise binary Linux portable).License: BSD License (revised)Changes:
The ability to understand (socket,core) tuples forspecific process placement was added, as opposedto just specifying Linux virtual processor IDs.The plpa-taskset executable was also added, whichunderstands the same command line syntax as the"taskset" command, but also understands(core@socket) nomenclature.Image

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LEARN ABOUT OSF1

pset_assign_cpu

pset_assign_cpu(1)					      General Commands Manual						pset_assign_cpu(1)

NAME

       pset_assign_cpu - Assigns a processor to a processor set

SYNOPSIS

       /usr/sbin/pset_assign_cpu pset_id processor [processor...]

       /usr/sbin/pset_assign_cpu -a  pset_id number

OPTIONS

       Adds the specified number of processors (number) to the specified processor set (pset_id) from the default processor set.

DESCRIPTION

       The  pset_assign_cpu  command  assigns  one or more processors to an existing processor set.  The pset_id variable is a unique integer that
       identifies the processor set and is returned by the pset_create command.  The processor variable is a unique integer  that  identifies  the
       processor.   Each  processor  that  is assigned to an existing processor set is removed from its current processor set.	The boot processor
       cannot be assigned.

       Processor assignments are logged in the /var/adm/wtmp file.

FILES

SEE ALSO

       Commands:  pset_destroy(1), pset_create(1), pset_assign_pid(1), pset_info(1)

       Files:  processor_sets(4)

																pset_assign_cpu(1)