Re: [PATCH 2/3] vmscan: make mapped executable pages the first class citizen

[KOSAKI Motohiro]

>> Another (amazing) finding of the test is, only around 1/10 mapped pages
>> are actively referenced in the absence of user activities.
>>
>> Shall we protect the remaining 9/10 inactive ones? This is a question ;-)
>
> I believe we already do, due to the active list not being
> scanned if none of the streaming IO pages get promoted to
> the active list.

his workload is,

lseek(0)
read(110 * 4096)
lseek(100 * 4096)
read(110 * 4096)
lseek(200 * 4096)
read(110 * 4096)
....

IOW, 90% pages move into inactive list, 10% (overlapped readed) pages
move into active list.
he think it is file server simulation.

I don't know it is good simulation or not.
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