Re: [RFC PATCH 0/2] mm: zsmalloc: make shrinker compaction budget-aware

[Sergey Senozhatsky]

On (26/08/06 16:27), xueyuan.chen@xxxxxxxx wrote:
> On an Android device with 12 GB of RAM, observed zsmalloc compaction
> durations had a p95 of 38.86 ms and a maximum of 269.68 ms, motivating a
> per-scan reclaim goal.

Would it be possible to give a little more data?  What was the
fragmentation ratio, how much memory was saved during that
auto-compaction, etc.  If possible.

Somewhere in the back of my mind I was thinking about, maybe,
disabling (removing) zsmalloc shrinker callbacks, in other words
disabling auto-compaction.  We have a sysfs knob for pool compaction
for system that still want to run compaction.  So I'm leaning towards
removal of shrinker callbacks from zsmalloc.