On Sat, Jun 11, 2016 at 10:16:01PM +0300, Ebru Akagunduz wrote: > min_ptes_young specifies at least how many young pages needed > to create a THP. This threshold also effects when making swapin > readahead (if needed) to create a THP. We decide whether to make > swapin readahed wortwhile looking the value. > > /sys/kernel/mm/transparent_hugepage/khugepaged/min_ptes_young > > Signed-off-by: Ebru Akagunduz <ebru.akagun...@gmail.com> Suggested-by: Minchan Kim <minc...@kernel.org> > --- Cc'ed Minchan Kim. > Documentation/vm/transhuge.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/vm/transhuge.txt b/Documentation/vm/transhuge.txt > index 2ec6adb..0ae713b 100644 > --- a/Documentation/vm/transhuge.txt > +++ b/Documentation/vm/transhuge.txt > @@ -193,6 +193,13 @@ memory. A lower value can prevent THPs from being > collapsed, resulting fewer pages being collapsed into > THPs, and lower memory access performance. > > +min_ptes_young specifies at least how many young pages needed > +to create a THP. This threshold also effects when making swapin > +readahead (if needed) to create a THP. We decide whether to make > +swapin readahed wortwhile looking the value. > + > +/sys/kernel/mm/transparent_hugepage/khugepaged/min_ptes_young > + > == Boot parameter == > > You can change the sysfs boot time defaults of Transparent Hugepage > -- > 1.9.1 >
