[PATCH] Add hugepage-size option

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 996da23a1ce998665d1f9af7d65faaf064eced64..3b270b1d723460110607b1c2b455d61f35164d06 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -378,12 +378,16 @@ mem=str           Fio can use various types of memory as the io unit buffer.
                divide that number by the huge page size. You can see the
                size of the huge pages in /proc/meminfo. If no huge pages
                are allocated by having a non-zero number in nr_hugepages,
-               using mmaphuge or shmhuge will fail.
+               using mmaphuge or shmhuge will fail. Also see hugepage-size.
 
                mmaphuge also needs to have hugetlbfs mounted and the file
                location should point there. So if it's mounted in /huge,
                you would use mem=mmaphuge:/huge/somefile.
 
+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.
+
 exitall                When one job finishes, terminate the rest. The default is
                to wait for each job to finish, sometimes that is not the
                desired action.