Messages in this thread | | | Date | Wed, 15 Jul 2015 09:24:00 +0900 | From | Minchan Kim <> | Subject | Re: [PATCH 0/3] zsmalloc: small compaction improvements |
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On Wed, Jul 15, 2015 at 09:21:06AM +0900, Sergey Senozhatsky wrote: > On (07/15/15 01:52), Minchan Kim wrote: > > > alrighty... again... > > > > > > > > > > > > > /sys/block/zram<id>/compact is a black box. We provide it, we don't > > > > > throttle it in the kernel, and user space is absolutely clueless when > > > > > it invokes compaction. From some remote (or alternative) point of > > > > > > > > But we have zs_can_compact so it can effectively skip the class if it > > > > is not proper class. > > > > > > user triggered compaction can compact too much. > > > in its current state triggering a compaction from user space is like > > > playing a lottery or a russian roulette. > > > > We were on different page. > > > I thought the motivation from this patchset is to prevent compaction > > overhead by frequent user-driven compaction request because user > > don't know how they can get free pages by compaction so they should > > ask compact frequently with blind. > > this is exactly the motivation for this patchset. seriously.
User should rely on the auto-compaction.
> > whatever. > > -ss
-- Kind regards, Minchan Kim
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