NAME

       pagein - a tool to force swapped out pages back into memory

SYNOPSIS

       pagein [-a] [-h] [-p pid] [-v]

DESCRIPTION

       Pagein  is  a  tool that forces pages that are in swap to be paged in back to memory.  The
       main usecase for pagein is to exercise the VM and swap subsystems for testing purposes.

OPTIONS

       pagein options are as follow:

       -a     try to page in all processes. This needs to be run with  root  privilege  to  allow
              pagein to access all the processes. Cannot be used with the -p option.

       -h     show help information.

       -p pid page  in process with process ID pid. Cannot be used with the -a option.  Processes
              not owned by the user need to be paged in by running pagein with root privilege.

       -v     verbose mode, shows progress and paging in statistics, useful with the -a option.

EXAMPLES

       Page in all processes and show progress:
               sudo pagein -a -v

       Page in the Xorg process:
               sudo pagein -p $(pidof Xorg)

SEE ALSO

       free(1)

AUTHOR

       pagein was written by Colin Ian King <colin.i.king@gmail.com>

       This manual page was written by Colin Ian King for the Ubuntu project (but may be used  by
       others).

COPYRIGHT

       Copyright © 2016-2021 Canonical Ltd, Copyright © 2021-2024 Colin Ian King.
       This  is  free software; see the source for copying conditions.  There is NO warranty; not
       even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

                                         12 January 2024                                PAGEIN(1)