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Switch to using ets set as index of L0 cache

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Hope is that this will cause less garbage collection, and also will be
slightly faster.

Note that snapshots don't now get an index - they get the special index
'snap'.  However, the SkipLists have bloom protection, and most
snapshots are iterators not fetchers.
This commit is contained in:
martinsumner 2016-12-10 14:15:35 +00:00
parent 06c58bf84b
commit 95d5e12ce7
2 changed files with 69 additions and 53 deletions
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2
src/leveled_penciller.erl
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@ -395,7 +395,7 @@ handle_call({register_snapshot, Snapshot}, _From, State) ->
Rs = [{Snapshot, State#state.manifest_sqn}|State#state.registered_snapshots],
{reply, {ok, State}, State#state{registered_snapshots = Rs}};
handle_call({load_snapshot, BookieIncrTree}, _From, State) ->
L0D = leveled_pmem:add_to_index(State#state.levelzero_index,
L0D = leveled_pmem:add_to_index(snap,
State#state.levelzero_size,
BookieIncrTree,
State#state.ledger_sqn,