Document transient chunk wrapper retention

This commit is contained in:
rdbtCVS
2026-10-15 10:40:54 +01:00
parent 0c161a0336
commit fac4944cfa
+4 -2
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@@ -62,5 +62,7 @@ The cache adds a weak handle and mask per cached resident chunk: about 13 KiB of
hash-table storage for 289 entries on this platform, including capacity slack.
It retains no unloaded block data. A first edit after caching can allocate/move
the 176-byte chunk wrapper (plus Arc bookkeeping); it does not force a deep
copy. The edit rows include this cost. Unloads remove entries; resource reload
clears the cache. The original outer tick-vector allocation remains.
copy. Its old Arc allocation can remain until the next query or removal (about
54 KiB for 289 edited chunks, including Arc bookkeeping). The edit rows include
the allocation cost. Unloads remove entries; resource reload clears the cache.
The original outer tick-vector allocation remains.