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MeshableArena: MADV_FREE indirection table #41

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bpowers opened this issue Mar 11, 2019 · 1 comment
Open

MeshableArena: MADV_FREE indirection table #41

bpowers opened this issue Mar 11, 2019 · 1 comment

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@bpowers
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bpowers commented Mar 11, 2019

Related to #37 and #40, we write the 32-bit MiniHeapID into _mhIndex -- for a 28 GB allocation, that is 3 MB of metadata. When large allocations like this are freed, we should MADV_FREE this metadata.

Similarly, we should be able to do something similar for the CheapHeaps we use for internal allocations.
@bpowers bpowers changed the title GlobalHeap/MeshableArena: scavenge should MADV_FREE indirection table GlobalHeap/MeshableArena: MADV_FREE indirection table Mar 11, 2019
@bpowers bpowers changed the title GlobalHeap/MeshableArena: MADV_FREE indirection table MeshableArena: MADV_FREE indirection table Mar 11, 2019
@dumblob
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dumblob commented Dec 16, 2021

I wonder if this is still planned. Any news?

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