перенести физическое расположение страниц процессов (Migrate the physical location a processes pages)
Имя (Name)
migratepages - Migrate the physical location a processes pages
Синопсис (Synopsis)
migratepages pid from-nodes to-nodes
Описание (Description)
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.
Примечание (Note)
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).
Файлы (Files)
/proc/<pid>/numa_maps for information about the NUMA memory use
of a process.
Смотри также (See also)
numactl(8) , set_mempolicy(2) , get_mempolicy(2) , mbind(2) ,
sched_setaffinity(2) , sched_getaffinity(2) , proc(5) , ftok(3) ,
shmat(2) , taskset(1)
