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MIGRATEPAGES(8) Linux Administrator's Manual MIGRATEPAGES(8)
migratepages - Migrate the physical location a processes pages
migratepages pid from-nodes to-nodes
migratepages moves the physical location of a processes pages without any changes of the virtual address space of the process. Moving the pages allows one to change the distances of a process to its memory. Performance may be optimized by moving a processes pages to the node where it is executing. If multiple nodes are specified for from-nodes or to-nodes then an attempt is made to preserve the relative location of each page in each nodeset. For example if we move from nodes 2-5 to 7,9,12-13 then the preferred mode of operation is to move pages from 2->7, 3->9, 4->12 and 5->13. However, this is only posssible if enough memory is available. Valid node specifiers all All nodes number Node number number1{,number2} Node number1 and Node number2 number1-number2 Nodes from number1 to number2 ! nodes Invert selection of the following specification.
Requires a NUMA policy aware kernel with support for page migration (linux 2.6.16 and later). migratepages will only move pages that are not shared with other processes if called by a user without administrative priviledges (but with the right to modify the process). migratepages will move all pages if invoked from root (or a user with administrative priviledges).
/proc/<pid>/numa_maps for information about the NUMA memory use of a process.
Copyright 2005-2006 Christoph Lameter, Silicon Graphics, Inc. migratepages is under the GNU General Public License, v.2
numactl(8) , set_mempolicy(2) , get_mempolicy(2) , mbind(2) , sched_setaffinity(2) , sched_getaffinity(2) , proc(5) , ftok(3) , shmat(2) , taskset(1)
This page is part of the numactl (NUMA commands) project.
Information about the project can be found at
⟨http://oss.sgi.com/projects/libnuma/⟩. If you have a bug report
for this manual page, send it to [email protected].
This page was obtained from the project's upstream Git repository
⟨https://github.com/numactl/numactl.git⟩ on 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-10.) If you discover any rendering
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(which is not part of the original manual page), send a mail to
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SGI Jan 2005 MIGRATEPAGES(8)
Pages that refer to this page: migrate_pages(2), move_pages(2), cpuset(7), numactl(8)