提交 9ddfa69f 编写于 作者: E Ebru Akagunduz 提交者: Jonathan Corbet

doc: add information about max_ptes_none

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: NEbru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: NRik van Riel <riel@redhat.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>
上级 d0724961
...@@ -159,6 +159,17 @@ for each pass: ...@@ -159,6 +159,17 @@ for each pass:
/sys/kernel/mm/transparent_hugepage/khugepaged/full_scans /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 == == Boot parameter ==
You can change the sysfs boot time defaults of Transparent Hugepage You can change the sysfs boot time defaults of Transparent Hugepage
......
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