On Thu, 27 Feb 2020 16:48:47 +0900 Joonsoo Kim <js1304@xxxxxxxxx> wrote: > Hello, Andrew. > > > > * SOLUTION > > > Since this is what we want to avoid, this patchset implements workingset > > > protection. Like as the file LRU list, newly created or swap-in anonymous > > > page is started on the inactive list. Also, like as the file LRU list, > > > if enough reference happens, the page will be promoted. This simple > > > modification changes the above example as following. > > > > One wonders why on earth we weren't doing these things in the first > > place? > > I don't know. I tried to find the origin of this behaviour and found > that it's from you 18 years ago. :) > > It mentions that starting pages on the active list boosts throughput on > stupid swapstormy test but I cannot guess the exact reason of such > improvement. > > Anyway, Following is the related patch history. Could you remember > anything about it? > erm, yes, that was a long time ago ;) I guess enough other things have changed since then to necessitate a revisit!
