Messages in this thread | | | Date | Tue, 27 Mar 2018 09:49:11 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [PATCH 2/2] zram: idle memory tracking |
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On (03/26/18 15:49), Minchan Kim wrote: > zRam as swap is useful for small memory device. However, swap means > those pages on zram are mostly cold pages due to VM's LRU algorithm. > Especially, once init data for application are touched for launching, > they tend to be not accessed any more and finally swapped out. > zRAM can store such cold pages as compressed form but it's pointless > to keep in memory. Better idea is app developers free them directly > rather than remaining them on heap. > > This patch tell us last accesss time of each block of zram via > "cat /sys/kernel/debug/zram/zram0/access_time". > > The output is as follows, > > 276 1250 > 277 1800 > .. .. > .. ..
So can we just use CONFIG_IDLE_PAGE_TRACKING + CONFIG_PAGE_OWNER?
-ss
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