On 08/17/2016 11:11 AM, Ralf-Peter Rohbeck wrote:
On 17.08.2016 00:56, Vlastimil Babka wrote:
And I really wonder how did all those unmovable pageblocks happen.
AFAICS zoneinfo shows that most of memory is occupied by file lru pages.
These should be movable.
Is it the pressure on the page cache? Don't forget that I write to some
disk drives (recently, 2) at media speed with dd if=/dev/zero bs=4M
of=/dev/SDX.
Hmm page cache should be movable. But maybe it's different for writing
to devices and not filesystems.
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