[PATCH] Warning on hugepage-size setting in HOWTO

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/HOWTO b/HOWTO
index 3b270b1d723460110607b1c2b455d61f35164d06..6a7f58ed92d8fcc9e7a041e22b8a393c5786c425 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -387,6 +387,9 @@ mem=str             Fio can use various types of memory as the io unit buffer.
 hugepage-size=siint
                Defines the size of a huge page. Must at least be equal
                to the system setting, see /proc/meminfo. Defaults to 4MiB.
 hugepage-size=siint
                Defines the size of a huge page. Must at least be equal
                to the system setting, see /proc/meminfo. Defaults to 4MiB.

+               Should probably always be a multiple of megabytes, so using
+               hugepage-size=Xm is the preferred way to set this to avoid
+               setting a non-pow-2 bad value.

 
 exitall                When one job finishes, terminate the rest. The default is
                to wait for each job to finish, sometimes that is not the
 
 exitall                When one job finishes, terminate the rest. The default is
                to wait for each job to finish, sometimes that is not the