Messages in this thread | | | Date | Mon, 14 Mar 2016 17:20:04 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [RFC][PATCH v3 1/5] mm/zsmalloc: introduce class auto-compaction |
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On (03/14/16 16:41), Sergey Senozhatsky wrote: [..] > you mean that __zs_compact() instead of just checking per-class > zs_can_compact() should check global pool ratio and bail out if > compaction of class Z has dropped the overall fragmentation ratio > below some watermark? > > my logic was that > -- suppose we have class A with fragmentation ratio 49% and class B > with 8% of wasted pages, so the overall pool fragmentation is > (50 + 10)/ 2 < 30%, while we still have almost 50% fragmented class.
"(49 + 8) / 2 < 30%"
-ss
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