max_ptes_none specifies how many extra small pages (that are not already mapped) can be allocated when collapsing a group of small pages into one large page. /sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_none A higher value leads to use additional memory for programs. A lower value leads to gain less thp performance. Value of max_ptes_none can waste cpu time very little, you can ignore it. Signed-off-by: Ebru Akagunduz <ebru.akagunduz@xxxxxxxxx> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx> --- Documentation/vm/transhuge.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/vm/transhuge.txt b/Documentation/vm/transhuge.txt index 6b31cfb..8143b9e 100644 --- a/Documentation/vm/transhuge.txt +++ b/Documentation/vm/transhuge.txt @@ -159,6 +159,17 @@ for each pass: /sys/kernel/mm/transparent_hugepage/khugepaged/full_scans +max_ptes_none specifies how many extra small pages (that are +not already mapped) can be allocated when collapsing a group +of small pages into one large page. + +/sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_none + +A higher value leads to use additional memory for programs. +A lower value leads to gain less thp performance. Value of +max_ptes_none can waste cpu time very little, you can +ignore it. + == Boot parameter == You can change the sysfs boot time defaults of Transparent Hugepage -- 1.9.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>