On (22/11/11 09:03), Minchan Kim wrote: [..] > for class in classes: > wasted_bytes += class->pages_per_zspage * PAGE_SIZE - an object size > > with *aggressive zpage compaction*. Now, we are relying on shrinker > (it might be already enough) to trigger but we could change the policy > wasted memory in the class size crossed a threshold That threshold can be another tunable in zramX/allocator_tunables sysfs knob and struct zs_tunables. But overall it sounds like a bigger project for some time next year. We already have zs_compact() sysfs knob, so user-space can invoke it as often as it wants to (not aware if anyone does btw), maybe new compaction should be something slightly different. I don't have any ideas yet. One way or the other it still can use the same sysfs knob :)
